無錫分散設(shè)備封頭加工廠無錫國(guó)鑫封頭供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="越大型號(hào)的封頭使用過程中會(huì)相對(duì)的問題較多，我們來看看封頭的使用要注意一些什么?1、封頭的形狀：根據(jù)設(shè)備的需求與合理，選擇合適的封頭種類：如橢圓形、蝶形、錐形、球形等；2、封頭的尺寸：是指的內(nèi)徑還是外徑。如377、426是以外徑為準(zhǔn)；350，"><meta name="keywords" content="無錫分散設(shè)備封頭加工廠,封頭"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u id="qgqbi"></u><noframes id="qgqbi"></noframes><menu id="qgqbi"></menu><blockquote id="qgqbi"></blockquote><track id="qgqbi"><label id="qgqbi"></label></track><tbody id="qgqbi"></tbody><legend id="qgqbi"></legend><th id="qgqbi"><button id="qgqbi"></button></th><listing id="qgqbi"><rt id="qgqbi"></rt></listing><sup id="qgqbi"><dd id="qgqbi"><tbody id="qgqbi"></tbody></dd></sup><menu id="qgqbi"><xmp id="qgqbi"></xmp></menu><fieldset id="qgqbi"><acronym id="qgqbi"></acronym></fieldset><wbr id="qgqbi"><mark id="qgqbi"><strong id="qgqbi"></strong></mark></wbr><tbody id="qgqbi"><small id="qgqbi"></small></tbody><label id="qgqbi"><tfoot id="qgqbi"></tfoot></label><div id="qgqbi"><th id="qgqbi"><object id="qgqbi"></object></th></div><listing id="qgqbi"></listing><source id="qgqbi"><ins id="qgqbi"></ins></source><noframes id="qgqbi"></noframes><noscript id="qgqbi"><strike id="qgqbi"><tt id="qgqbi"></tt></strike></noscript><strike id="qgqbi"><rp id="qgqbi"></rp></strike><dl id="qgqbi"></dl><th id="qgqbi"></th><acronym id="qgqbi"></acronym><center id="qgqbi"><input id="qgqbi"><div id="qgqbi"><th id="qgqbi"></th></div></input></center><label id="qgqbi"></label><tr id="qgqbi"><label id="qgqbi"><center id="qgqbi"></center></label></tr><menuitem id="qgqbi"><em id="qgqbi"><legend id="qgqbi"></legend></em></menuitem><pre id="qgqbi"></pre><fieldset id="qgqbi"><address id="qgqbi"><abbr id="qgqbi"><dl id="qgqbi"></dl></abbr></address></fieldset><sup id="qgqbi"><form id="qgqbi"></form></sup><form id="qgqbi"></form> <form id="qgqbi"></form><center id="qgqbi"><rp id="qgqbi"></rp></center><code id="qgqbi"></code><option id="qgqbi"><i id="qgqbi"><tr id="qgqbi"></tr></i></option><address id="qgqbi"></address><pre id="qgqbi"></pre><wbr id="qgqbi"></wbr><dl id="qgqbi"><delect id="qgqbi"><bdo id="qgqbi"></bdo></delect></dl><table id="qgqbi"><p id="qgqbi"></p></table><label id="qgqbi"><xmp id="qgqbi"><noscript id="qgqbi"><dl id="qgqbi"></dl></noscript></xmp></label><cite id="qgqbi"></cite><acronym id="qgqbi"><object id="qgqbi"><big id="qgqbi"></big></object></acronym><rp id="qgqbi"></rp><tt id="qgqbi"></tt><output id="qgqbi"></output><table id="qgqbi"><p id="qgqbi"><ruby id="qgqbi"></ruby></p></table><tt id="qgqbi"><tbody id="qgqbi"><acronym id="qgqbi"><b id="qgqbi"></b></acronym></tbody></tt><u id="qgqbi"></u><bdo id="qgqbi"><tr id="qgqbi"><dfn id="qgqbi"></dfn></tr></bdo><strike id="qgqbi"><font id="qgqbi"></font></strike><s id="qgqbi"></s><acronym id="qgqbi"><samp id="qgqbi"><code id="qgqbi"><pre id="qgqbi"></pre></code></samp></acronym><cite id="qgqbi"></cite><form id="qgqbi"><dl id="qgqbi"><pre id="qgqbi"><label id="qgqbi"></label></pre></dl></form><center id="qgqbi"><rp id="qgqbi"></rp></center><font id="qgqbi"></font><menu id="qgqbi"></menu><small id="qgqbi"><strong id="qgqbi"><sup id="qgqbi"><form id="qgqbi"></form></sup></strong></small><label id="qgqbi"><tfoot id="qgqbi"><em id="qgqbi"></em></tfoot></label><optgroup id="qgqbi"><fieldset id="qgqbi"><thead id="qgqbi"><strong id="qgqbi"></strong></thead></fieldset></optgroup><label id="qgqbi"></label><meter id="qgqbi"><noframes id="qgqbi"><i id="qgqbi"><ins id="qgqbi"></ins></i></noframes></meter><kbd id="qgqbi"></kbd><b id="qgqbi"></b><dl id="qgqbi"><delect id="qgqbi"><th id="qgqbi"><span id="qgqbi"></span></th></delect></dl><font id="qgqbi"></font><small id="qgqbi"></small><mark id="qgqbi"></mark><del id="qgqbi"><dfn id="qgqbi"><source id="qgqbi"><tr id="qgqbi"></tr></source></dfn></del><dd id="qgqbi"><ruby id="qgqbi"><menu id="qgqbi"></menu></ruby></dd><th id="qgqbi"><em id="qgqbi"></em></th><abbr id="qgqbi"></abbr><span id="qgqbi"><kbd id="qgqbi"><dfn id="qgqbi"><sub id="qgqbi"></sub></dfn></kbd></span><ins id="qgqbi"></ins><s id="qgqbi"><progress id="qgqbi"></progress></s><th id="qgqbi"></th><bdo id="qgqbi"></bdo><blockquote id="qgqbi"></blockquote><b id="qgqbi"></b><nav id="qgqbi"><div id="qgqbi"></div></nav> <meter id="qgqbi"><dfn id="qgqbi"><source id="qgqbi"><tr id="qgqbi"></tr></source></dfn></meter><tfoot id="qgqbi"></tfoot><big id="qgqbi"><pre id="qgqbi"><s id="qgqbi"></s></pre></big><small id="qgqbi"></small><table id="qgqbi"><td id="qgqbi"><sup id="qgqbi"></sup></td></table><form id="qgqbi"><tr id="qgqbi"></tr></form><tr id="qgqbi"><fieldset id="qgqbi"><thead id="qgqbi"><strong id="qgqbi"></strong></thead></fieldset></tr><ul id="qgqbi"></ul><center id="qgqbi"><optgroup id="qgqbi"><div id="qgqbi"></div></optgroup></center><rp id="qgqbi"><input id="qgqbi"><blockquote id="qgqbi"><th id="qgqbi"></th></blockquote></input></rp><tbody id="qgqbi"></tbody><form id="qgqbi"><u id="qgqbi"><fieldset id="qgqbi"></fieldset></u></form><rp id="qgqbi"></rp><b id="qgqbi"><small id="qgqbi"></small></b><dd id="qgqbi"></dd><kbd id="qgqbi"></kbd><code id="qgqbi"><pre id="qgqbi"><ul id="qgqbi"></ul></pre></code><strong id="qgqbi"></strong><cite id="qgqbi"><sub id="qgqbi"></sub></cite><object id="qgqbi"></object><dfn id="qgqbi"></dfn><pre id="qgqbi"></pre><xmp id="qgqbi"></xmp><pre id="qgqbi"></pre><sup id="qgqbi"><form id="qgqbi"><cite id="qgqbi"></cite></form></sup><tt id="qgqbi"><tbody id="qgqbi"><acronym id="qgqbi"><b id="qgqbi"></b></acronym></tbody></tt><input id="qgqbi"></input><acronym id="qgqbi"><samp id="qgqbi"><code id="qgqbi"></code></samp></acronym><nobr id="qgqbi"><pre id="qgqbi"><ul id="qgqbi"><strong id="qgqbi"></strong></ul></pre></nobr><menuitem id="qgqbi"><em id="qgqbi"><wbr id="qgqbi"><mark id="qgqbi"></mark></wbr></em></menuitem><dl id="qgqbi"></dl><rp id="qgqbi"><input id="qgqbi"><div id="qgqbi"></div></input></rp><div id="qgqbi"><button id="qgqbi"><pre id="qgqbi"><meter id="qgqbi"></meter></pre></button></div><address id="qgqbi"></address><thead id="qgqbi"><abbr id="qgqbi"><sup id="qgqbi"></sup></abbr></thead><em id="qgqbi"></em><ul id="qgqbi"><listing id="qgqbi"><wbr id="qgqbi"></wbr></listing></ul><listing id="qgqbi"></listing><wbr id="qgqbi"></wbr><thead id="qgqbi"><abbr id="qgqbi"><strike id="qgqbi"></strike></abbr></thead><menuitem id="qgqbi"></menuitem><pre id="qgqbi"></pre><pre id="qgqbi"></pre><dl id="qgqbi"><delect id="qgqbi"><bdo id="qgqbi"><span id="qgqbi"></span></bdo></delect></dl><ruby id="qgqbi"></ruby><pre id="qgqbi"><strike id="qgqbi"><tt id="qgqbi"><i id="qgqbi"></i></tt></strike></pre><fieldset id="qgqbi"><address id="qgqbi"></address></fieldset><cite id="qgqbi"><sub id="qgqbi"></sub></cite><optgroup id="qgqbi"></optgroup><fieldset id="qgqbi"><address id="qgqbi"></address></fieldset></div><div id="e194t" class="pl_css_ganrao" style="display: none;"><i id="e194t"></i><small id="e194t"></small><tbody id="e194t"><ul id="e194t"><dd id="e194t"></dd></ul></tbody><style id="e194t"></style><pre id="e194t"><strong id="e194t"><small id="e194t"><kbd id="e194t"></kbd></small></strong></pre><form id="e194t"><em id="e194t"></em></form><meter id="e194t"><noframes id="e194t"><source id="e194t"><ins id="e194t"></ins></source></noframes></meter><abbr id="e194t"></abbr><del id="e194t"><nobr id="e194t"><source id="e194t"><ul id="e194t"></ul></source></nobr></del><acronym id="e194t"></acronym><th id="e194t"><rt id="e194t"><del id="e194t"><dfn id="e194t"></dfn></del></rt></th><tbody id="e194t"><ol id="e194t"></ol></tbody><var id="e194t"><wbr id="e194t"><abbr id="e194t"></abbr></wbr></var><thead id="e194t"><sup id="e194t"><menu id="e194t"></menu></sup></thead><track id="e194t"></track><font id="e194t"></font><tr id="e194t"><fieldset id="e194t"><acronym id="e194t"></acronym></fieldset></tr><menu id="e194t"><b id="e194t"><track id="e194t"></track></b></menu><span id="e194t"><kbd id="e194t"><dfn id="e194t"><sub id="e194t"></sub></dfn></kbd></span><small id="e194t"><strong id="e194t"><sup id="e194t"><optgroup id="e194t"></optgroup></sup></strong></small><strike id="e194t"><font id="e194t"></font></strike><ul id="e194t"><strong id="e194t"></strong></ul><strike id="e194t"><font id="e194t"></font></strike><u id="e194t"><strong id="e194t"></strong></u><menu id="e194t"><legend id="e194t"><track id="e194t"></track></legend></menu><strong id="e194t"></strong><mark id="e194t"></mark><input id="e194t"><tt id="e194t"><th id="e194t"><object id="e194t"></object></th></tt></input><nav id="e194t"></nav><input id="e194t"><progress id="e194t"><th id="e194t"><style id="e194t"></style></th></progress></input><th id="e194t"></th><tt id="e194t"><bdo id="e194t"></bdo></tt><rp id="e194t"></rp><bdo id="e194t"><span id="e194t"></span></bdo><tbody id="e194t"></tbody><legend id="e194t"></legend><progress id="e194t"></progress><form id="e194t"></form><sup id="e194t"><dd id="e194t"><tbody id="e194t"><ol id="e194t"></ol></tbody></dd></sup><legend id="e194t"><dfn id="e194t"><table id="e194t"><p id="e194t"></p></table></dfn></legend><p id="e194t"></p><sub id="e194t"><li id="e194t"><th id="e194t"><em id="e194t"></em></th></li></sub><meter id="e194t"><tt id="e194t"><i id="e194t"><ins id="e194t"></ins></i></tt></meter><form id="e194t"></form><label id="e194t"><xmp id="e194t"></xmp></label><input id="e194t"></input><u id="e194t"></u><samp id="e194t"><track id="e194t"><pre id="e194t"></pre></track></samp><bdo id="e194t"><span id="e194t"></span></bdo></div><header class="header container"><span id="mkm333n" class="logo"><a href="http://www.cdcfah.com/"><img src="/static/new_net_01/images/logo.png" alt="找產(chǎn)品網(wǎng)"></a></span><span id="uz37avx" class="tigs"> 發(fā)信息做推廣就找產(chǎn)品網(wǎng)<br />企業(yè)電商信息綜合服務(wù)平臺(tái) </span><div id="txqp8pu" class="searchbox"><div id="wln7bsp" class="searchLt"><div id="u8x3by3" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會(huì)</a></div><div id="hset9am" class="clearfix searchWrap"><div id="7wg3ro4" class="searchInput"><input type="text" name="keywords" placeholder="請(qǐng)輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="imo9ifj" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁(yè)</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會(huì)信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="jy2f33u" class="twoCol"><div id="mbdsmhw" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_wjgj/">五金、工具</a>?<a href="http://www.cdcfah.com/cp/second-wjgj_guanjianbi/">管件</a>?<a href="http://www.cdcfah.com/cp/third-guanjianbi_fengtou/">封頭</a>?無錫分散設(shè)備封頭加工廠無錫國(guó)鑫封頭供應(yīng)</p><div id="k7y4egi" class="leftbox clearfix"><h1>無錫分散設(shè)備封頭加工廠無錫國(guó)鑫封頭供應(yīng)</h1><div id="t32rlho" class="proBig"><div id="7rihg2f" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178619026503/2262348.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="vkheonz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178619026503/2262348.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hbyvcta" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>無錫分散設(shè)備封頭加工廠,封頭</p><p><span>***更新：</span>2020-12-24 08:24:40</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="gvx8o8e" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">無錫國(guó)鑫封頭制造有限公司</a></p><p><span>聯(lián)系人：</span>魏峰潔</p><p><span>郵箱: </span>239703@qq.com</p><p><span>電話: </span>13861726550</p><p><span>傳真: </span>0510_83898088</p><p><span>網(wǎng)址: </span>http://www.wxgxft.com</p><p><span>手機(jī): </span>0510-83897088</p><p><span>地址: </span>玉祁街道曙光村</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ti8ebnk" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="dmz7hya" class="box"><p><p style="text-indent:25px">越大型號(hào)的封頭使用過程中會(huì)相對(duì)的問題較多，我們來看看封頭的使用要注意一些什么?1、封頭的形狀：根據(jù)設(shè)備的需求與合理，選擇合適的封頭種類：如橢圓形、蝶形、錐形、球形等；2、封頭的尺寸：是指的內(nèi)徑還是外徑。如377、426是以外徑為準(zhǔn)；350，無錫分散設(shè)備封頭加工廠、400、450是以內(nèi)徑為準(zhǔn)；3、封頭的高度：一般封頭的高度我們都是按照國(guó)家標(biāo)準(zhǔn)來生產(chǎn)，但是也有客戶的產(chǎn)品設(shè)計(jì)不一樣，需要的封頭高度不同，所以有特殊要求定貨雙方要協(xié)商一致；4、封頭的材質(zhì)：一般使用較多的是304不銹鋼和碳鋼兩種，但是也有特殊用途的，如耐高溫必須用310S材質(zhì)、耐酸性一定要使用316L材質(zhì)等；5、封頭的周長(zhǎng)：封頭是用模具沖壓成形，鋼板在沖壓過種中會(huì)有一些應(yīng)力存在，而且沖壓拉伸過程中會(huì)有相對(duì)變形，那么封頭的直徑要如何判斷準(zhǔn)確與否，就看周長(zhǎng)多少，無錫分散設(shè)備封頭加工廠，是否標(biāo)準(zhǔn)；6、封頭與筒體焊接：封頭與筒體對(duì)焊的時(shí)候，一定是先將封頭與筒體用幾個(gè)點(diǎn)平均固定，再均勻的進(jìn)行焊接處理。球形封頭和筒體采用同樣薄厚還有益于降低鑄造缺陷，無錫分散設(shè)備封頭加工廠、提升電焊焊接品質(zhì)，也相對(duì)減少器皿制造成本。無錫分散設(shè)備封頭加工廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫分散設(shè)備封頭加工廠,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178619026503/2262348.png"></div><p style="text-indent:25px">不銹鋼封頭冷卻速度愈快,含碳量和合金成分愈高,冷卻過程中在熱應(yīng)力作用下產(chǎn)生的不均勻塑性變形愈大,末尾形成的殘余應(yīng)力就愈大。不銹鋼封頭在加熱和冷卻過程中,表層和心部的冷卻速度和時(shí)間的不一致,形成溫差，導(dǎo)致體積膨脹和收縮不均而產(chǎn)生應(yīng)力,即熱應(yīng)力。不銹鋼封頭在熱應(yīng)力的作用下,由于表層開始溫度低于心部,收縮也大于心部而使心部受拉,當(dāng)冷卻結(jié)束時(shí)，由于心部末尾冷卻體積收縮不能自由進(jìn)行而使表層受壓心部受拉。即在熱應(yīng)力的作用下較終使工件表層受壓而心部受拉。這種現(xiàn)象受到冷卻速度,材料成分和熱處理工藝等因素的影響。鋼在熱處理過程中由于組織的變化即奧氏體向馬氏體轉(zhuǎn)變時(shí),因比容的增大會(huì)伴隨工件體積的膨脹,工件各部位先后相變，造成體積長(zhǎng)大不一致而產(chǎn)生組織應(yīng)力。無錫雙氧水設(shè)備封頭生產(chǎn)廠家直銷橢圓形的封頭經(jīng)線曲率變化平滑連續(xù)，易于沖壓成型，是目前應(yīng)用較多的封頭。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫分散設(shè)備封頭加工廠,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178497552657/309419.png"></div><p style="text-indent:25px">怎樣定制合適的容器封頭呢？1、容器封頭存在杰出的旋壓成型機(jī)能對(duì)成型工序，比如拉伸、折彎、打段差、凸包等，材料應(yīng)存在杰出的旋壓成型機(jī)能，即應(yīng)有杰出的抗分裂性、杰出的貼模性跟定形性，否則產(chǎn)品輕易產(chǎn)生變形、分裂等，形成修模的艱苦。對(duì)分別工序，則懇求材料存在必定的塑性。?2、容器封頭存在較高的名義質(zhì)量材料名義應(yīng)光亮平坦，無缺點(diǎn)損傷。名義質(zhì)量好的材料，成型時(shí)不易分裂，不易擦傷模具，制件的名義質(zhì)量也好。3、容器封頭材料的厚度公役應(yīng)符合國(guó)度尺度因?yàn)楸囟ǖ哪＞呖盏?實(shí)用于必定厚度領(lǐng)域的材料，若材料厚度公役太大；不只直接影響制件的質(zhì)量，還可能導(dǎo)致成品的呈現(xiàn)。在校訂曲折、整形等工序中，有可能因厚度正誤差過大而引起模具或壓力機(jī)的損壞。</p><p style="text-indent:25px">對(duì)于封頭現(xiàn)在人們也正在研究使用磷化潤(rùn)滑的方法，不止是否有可能。封頭的溫鍛的優(yōu)勢(shì)在于可以提高鍛件的精度和質(zhì)量，同時(shí)又沒有冷鍛那樣大的成形力。溫鍛工藝的應(yīng)用與鍛件材料、鍛件大小、鍛件復(fù)雜程度有密切的關(guān)系。一般而言，對(duì)于形狀不太復(fù)雜的低碳、低合金鋼小型精密模鍛件，采用冷鍛工藝可以成形；對(duì)于形狀復(fù)雜的中小型中碳鋼精密模鍛件，冷鍛方法難以解決其成形問題，或單純采用冷鍛工藝成本偏高，則可采用溫鍛成形。封頭鋼的再結(jié)晶溫度大約在750℃左右。封頭屬壓力容器中鍋爐部件的一種。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫分散設(shè)備封頭加工廠,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393177816365410/2698061.png"></div><p style="text-indent:25px">需要知道的是封頭在使用的時(shí)候是和我們的錐形封頭不一樣的，這種封頭是屬于小型不銹鋼封頭安裝的時(shí)候有很大的區(qū)別。不銹鋼封頭的直徑大小跨度十分的大，在安裝中型或者是大型不銹鋼封頭的時(shí)候一般使用的都是冷安裝的方式，也是直接的使用一些固化的安裝方式，但是小型不銹鋼封頭之上使用這種安裝技術(shù)是不切實(shí)際的，因?yàn)楹芏嗟臅r(shí)候我們的小型不銹鋼封頭是需要多次反復(fù)拆裝的，這樣我們需要另外的一種安裝方式。螺紋安裝方式對(duì)于小型不銹鋼封頭來說是一個(gè)不錯(cuò)的選擇。封頭用來改善調(diào)節(jié)閥的流量特性。無錫分散設(shè)備封頭加工廠</p><p style="text-indent:25px">橢圓封頭保養(yǎng)技巧：防止與碳素鋼直接接觸，避免鐵離子污染。無錫分散設(shè)備封頭加工廠</p><p style="text-indent:25px">不銹鋼封頭的熱處理：一方面鋼在熱處理過程中由于組織的變化即奧氏體向馬氏體轉(zhuǎn)變時(shí)，因比容的增大會(huì)伴隨工件體積的膨脹，工件各部位先后相變，造成體積長(zhǎng)大不一致而產(chǎn)生組織應(yīng)力。不銹鋼封頭組織應(yīng)力變化的較終結(jié)果是表層受拉應(yīng)力，心部受壓應(yīng)力，恰好與熱應(yīng)力相反。組織應(yīng)力的大小與工件在馬氏體相變區(qū)的冷卻速度，形狀，材料的化學(xué)成分等因素有關(guān)。只不過熱應(yīng)力在組織轉(zhuǎn)變以前就已經(jīng)產(chǎn)生了不銹鋼封頭，而組織應(yīng)力則是在組織轉(zhuǎn)變過程中產(chǎn)生的，在整個(gè)冷卻過程中，熱應(yīng)力與組織應(yīng)力綜合作用的結(jié)果，就是工件中實(shí)際存在的應(yīng)力。這兩種應(yīng)力綜合作用的結(jié)果是十分復(fù)雜的，受著許多因素的影響，如成分、形狀、熱處理工藝等。就其發(fā)展過程來說只有兩種類型，即熱應(yīng)力和組織應(yīng)力，作用方向相反時(shí)二者抵消，作用方向相同時(shí)二者相互迭加。不管是相互抵消還是相互迭加，兩個(gè)應(yīng)力應(yīng)有一個(gè)占主導(dǎo)因素，熱應(yīng)力占主導(dǎo)地位時(shí)的作用結(jié)果是工件心部受拉，表面受壓。組織應(yīng)力占主導(dǎo)地位時(shí)的作用結(jié)果是工件心部受壓表面受拉。無錫分散設(shè)備封頭加工廠</p><p style="text-indent:25px">無錫國(guó)鑫封頭制造有限公司致力于機(jī)械及行業(yè)設(shè)備，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。國(guó)鑫封頭作為主營(yíng)封頭、橢圓封頭、碟形封頭、球冠封頭、半球封頭、錐形封頭、爐臺(tái)殼體、平底封頭、攪拌車封頭、**車封頭、SF/SS 雙層油罐封頭、方圓封頭、鴨蛋封頭及雙相鋼、鋁鎂合金、鈦合金等特種材料封頭。主要運(yùn)用于壓力容器設(shè)備、制藥設(shè)備、環(huán)保設(shè)備、罐體運(yùn)輸車輛等行業(yè)的企業(yè)之一，為客戶提供良好的封頭，不銹鋼封頭，碳鋼封頭，鋁封頭。國(guó)鑫封頭始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。國(guó)鑫封頭始終關(guān)注機(jī)械及行業(yè)設(shè)備行業(yè)。滿足市場(chǎng)需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2542641.html</p></div></div></div></div></div><div id="tif8s2t" class="page-right twoColRt"><div id="s84vx2o" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="k7rv8fc" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="k7cgcjg" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)</p></a></div><div id="apcrikw" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/2083415.html"><div><img src="https://tyunfile.71360.com/UploadFile/WZAJZNKJ/637332852248037109/2461316.png" alt="200l桶自動(dòng)灌裝機(jī)生產(chǎn)廠歡迎來電溫州奧基智能科技供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>200l桶自動(dòng)灌裝機(jī)生產(chǎn)廠歡迎來電溫州奧基智能科技供應(yīng)</p></a></div><div id="etac3ip" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/1387.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/8/3/11/637004297269091023_cyjqc_1306937.jpg" alt="烏魯木齊市會(huì)務(wù)租車網(wǎng) 車永捷供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>烏魯木齊市會(huì)務(wù)租車網(wǎng) 車永捷供應(yīng)</p></a></div><div id="p32wlsz" class="clear"></div></div><div id="7x7xu2b" class="box01 box03"><h3><a href="http://www.cdcfah.com/xw/">***產(chǎn)品資訊</a></h3><ul></ul></div></div></section><div id="d2jxzgd" class="page-proshow02"><p class="title">本企業(yè)其它產(chǎn)品 <span style="float:right;"><a >更多>></a></span></p><div id="o2gn3o3" class="box box-add clearfix"><ul class="box-list"><li><a href="http://www.cdcfah.com/cp/1719723.html"><div id="v43ubdf" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393177816365410/2698061.png" alt="徐州Q235B封頭廠商無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>徐州Q235B封頭廠商無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1719724.html"><div id="t4ypmta" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179742369306/9282842.png" alt="南通污水處理設(shè)備封頭無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>南通污水處理設(shè)備封頭無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1719725.html"><div id="izgyacz" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393177952995583/8456246.png" alt="連云港臥式儲(chǔ)罐封頭生產(chǎn)廠家無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>連云港臥式儲(chǔ)罐封頭生產(chǎn)廠家無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1719726.html"><div id="2x9fceg" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179465046692/7774486.png" alt="徐州平底封頭生產(chǎn)廠家電話無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>徐州平底封頭生產(chǎn)廠家電話無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1721993.html"><div id="acelnev" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179721099912/4809230.png" alt="安徽分散設(shè)備封頭企業(yè) 無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>安徽分散設(shè)備封頭企業(yè) 無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1724174.html"><div id="pmogya3" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179614381692/2265333.png" alt="蘇州印染機(jī)械封頭廠制造無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>蘇州印染機(jī)械封頭廠制造無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1724175.html"><div id="gk3pm2n" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178090075643/961728.png" alt="南京鋼包封頭無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>南京鋼包封頭無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1726469.html"><div id="cmjgif7" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179041563010/3671152.png" alt="南通雙氧水設(shè)備封頭加工廠無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>南通雙氧水設(shè)備封頭加工廠無錫國(guó)鑫封頭供應(yīng)</p></a></li></ul></div></div><div id="qfry7j4" class="page-proshow02"><p class="title">同類產(chǎn)品推薦 <span><a href="http://www.cdcfah.com/cp/first-_wjgj/">更多>></a></span></p><div id="pebt2k9" class="box box-add clearfix"><ul class="box-list"><li><a href="http://www.cdcfah.com/cp/1789953.html"><div id="o7ebn22" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393177975553890/7890057.png" alt="蘇州球冠形封頭加工無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>蘇州球冠形封頭加工無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1724174.html"><div id="fz8oac7" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179614381692/2265333.png" alt="蘇州印染機(jī)械封頭廠制造無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>蘇州印染機(jī)械封頭廠制造無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/3198607.html"><div id="tnproas" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393177986022692/3812274.png" alt="蘇州鋼包封頭廠家無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>蘇州鋼包封頭廠家無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1719726.html"><div id="jdacevs" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179465046692/7774486.png" alt="徐州平底封頭生產(chǎn)廠家電話無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>徐州平底封頭生產(chǎn)廠家電話無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1719723.html"><div id="hwo8zwi" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393177816365410/2698061.png" alt="徐州Q235B封頭廠商無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>徐州Q235B封頭廠商無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1726469.html"><div id="fpme3fu" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179041563010/3671152.png" alt="南通雙氧水設(shè)備封頭加工廠無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>南通雙氧水設(shè)備封頭加工廠無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1738753.html"><div id="oikmduj" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179465046692/7774486.png" alt="南京水處理設(shè)備封頭生產(chǎn)廠家直銷無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>南京水處理設(shè)備封頭生產(chǎn)廠家直銷無錫國(guó)鑫封頭供應(yīng)</p></a></li><li><a href="http://www.cdcfah.com/cp/1724175.html"><div id="887yfxz" class="reImg"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178090075643/961728.png" alt="南京鋼包封頭無錫國(guó)鑫封頭供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>南京鋼包封頭無錫國(guó)鑫封頭供應(yīng)</p></a></li></ul></div></div></section></section><footer class="footer"><div id="3ird3oi" class="container"><p><a href="http://www.cdcfah.com/">首頁(yè)</a> | <a >企業(yè)名錄</a> | <a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a> | <a href="http://www.cdcfah.com/zx/">新聞資訊</a> | <a href="http://www.cdcfah.com/xw/">行業(yè)資訊</a> | <a href="http://www.cdcfah.com/zh/">展會(huì)信息</a> | <a href="http://www.cdcfah.com/sitemap.html">網(wǎng)站地圖</a> | </p><p><p><p>b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰??<a target="_blank">?<span style="white-space:normal;text-indent:24px;"><a target="_blank"><span style="font-family:" font-size:13.3333px;text-align:center;white-space:pre-wrap;caret-color:#1e6fff;background-color:#ffffff;"="">滬ICP備18002634號(hào)-32</span></a> </span><br /></a>??<span>??</span></p></p><p style="text-align:center;white-space:normal;"> <br /> </p> <p style="white-space:normal;text-align:center;"> <a target="_blank"></a> </p></p></div></footer> <footer> <a href="http://www.cdcfah.com/" title="六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u id="qgqbi"></u><noframes id="qgqbi"></noframes><menu id="qgqbi"></menu><blockquote id="qgqbi"></blockquote><track id="qgqbi"><label id="qgqbi"></label></track><tbody id="qgqbi"></tbody><legend id="qgqbi"></legend><th id="qgqbi"><button id="qgqbi"></button></th><listing id="qgqbi"><rt id="qgqbi"></rt></listing><sup id="qgqbi"><dd id="qgqbi"><tbody id="qgqbi"></tbody></dd></sup><menu id="qgqbi"><xmp id="qgqbi"></xmp></menu><fieldset id="qgqbi"><acronym id="qgqbi"></acronym></fieldset><wbr id="qgqbi"><mark id="qgqbi"><strong id="qgqbi"></strong></mark></wbr><tbody id="qgqbi"><small id="qgqbi"></small></tbody><label id="qgqbi"><tfoot id="qgqbi"></tfoot></label><div id="qgqbi"><th id="qgqbi"><object id="qgqbi"></object></th></div><listing id="qgqbi"></listing><source id="qgqbi"><ins id="qgqbi"></ins></source><noframes id="qgqbi"></noframes><noscript id="qgqbi"><strike id="qgqbi"><tt id="qgqbi"></tt></strike></noscript><strike id="qgqbi"><rp id="qgqbi"></rp></strike><dl id="qgqbi"></dl><th id="qgqbi"></th><acronym id="qgqbi"></acronym><center id="qgqbi"><input id="qgqbi"><div id="qgqbi"><th id="qgqbi"></th></div></input></center><label id="qgqbi"></label><tr id="qgqbi"><label id="qgqbi"><center id="qgqbi"></center></label></tr><menuitem id="qgqbi"><em id="qgqbi"><legend id="qgqbi"></legend></em></menuitem><pre id="qgqbi"></pre><fieldset id="qgqbi"><address id="qgqbi"><abbr id="qgqbi"><dl id="qgqbi"></dl></abbr></address></fieldset><sup id="qgqbi"><form id="qgqbi"></form></sup><form id="qgqbi"></form> <form id="qgqbi"></form><center id="qgqbi"><rp id="qgqbi"></rp></center><code id="qgqbi"></code><option id="qgqbi"><i id="qgqbi"><tr id="qgqbi"></tr></i></option><address id="qgqbi"></address><pre id="qgqbi"></pre><wbr id="qgqbi"></wbr><dl id="qgqbi"><delect id="qgqbi"><bdo id="qgqbi"></bdo></delect></dl><table id="qgqbi"><p id="qgqbi"></p></table><label id="qgqbi"><xmp id="qgqbi"><noscript id="qgqbi"><dl id="qgqbi"></dl></noscript></xmp></label><cite id="qgqbi"></cite><acronym id="qgqbi"><object id="qgqbi"><big id="qgqbi"></big></object></acronym><rp id="qgqbi"></rp><tt id="qgqbi"></tt><output id="qgqbi"></output><table id="qgqbi"><p id="qgqbi"><ruby id="qgqbi"></ruby></p></table><tt id="qgqbi"><tbody id="qgqbi"><acronym id="qgqbi"><b id="qgqbi"></b></acronym></tbody></tt><u id="qgqbi"></u><bdo id="qgqbi"><tr id="qgqbi"><dfn id="qgqbi"></dfn></tr></bdo><strike id="qgqbi"><font id="qgqbi"></font></strike><s id="qgqbi"></s><acronym id="qgqbi"><samp id="qgqbi"><code id="qgqbi"><pre id="qgqbi"></pre></code></samp></acronym><cite id="qgqbi"></cite><form id="qgqbi"><dl id="qgqbi"><pre id="qgqbi"><label id="qgqbi"></label></pre></dl></form><center id="qgqbi"><rp id="qgqbi"></rp></center><font id="qgqbi"></font><menu id="qgqbi"></menu><small id="qgqbi"><strong id="qgqbi"><sup id="qgqbi"><form id="qgqbi"></form></sup></strong></small><label id="qgqbi"><tfoot id="qgqbi"><em id="qgqbi"></em></tfoot></label><optgroup id="qgqbi"><fieldset id="qgqbi"><thead id="qgqbi"><strong id="qgqbi"></strong></thead></fieldset></optgroup><label id="qgqbi"></label><meter id="qgqbi"><noframes id="qgqbi"><i id="qgqbi"><ins id="qgqbi"></ins></i></noframes></meter><kbd id="qgqbi"></kbd><b id="qgqbi"></b><dl id="qgqbi"><delect id="qgqbi"><th id="qgqbi"><span id="qgqbi"></span></th></delect></dl><font id="qgqbi"></font><small id="qgqbi"></small><mark id="qgqbi"></mark><del id="qgqbi"><dfn id="qgqbi"><source id="qgqbi"><tr id="qgqbi"></tr></source></dfn></del><dd id="qgqbi"><ruby id="qgqbi"><menu id="qgqbi"></menu></ruby></dd><th id="qgqbi"><em id="qgqbi"></em></th><abbr id="qgqbi"></abbr><span id="qgqbi"><kbd id="qgqbi"><dfn id="qgqbi"><sub id="qgqbi"></sub></dfn></kbd></span><ins id="qgqbi"></ins><s id="qgqbi"><progress id="qgqbi"></progress></s><th id="qgqbi"></th><bdo id="qgqbi"></bdo><blockquote id="qgqbi"></blockquote><b id="qgqbi"></b><nav id="qgqbi"><div id="qgqbi"></div></nav> <meter id="qgqbi"><dfn id="qgqbi"><source id="qgqbi"><tr id="qgqbi"></tr></source></dfn></meter><tfoot id="qgqbi"></tfoot><big id="qgqbi"><pre id="qgqbi"><s id="qgqbi"></s></pre></big><small id="qgqbi"></small><table id="qgqbi"><td id="qgqbi"><sup id="qgqbi"></sup></td></table><form id="qgqbi"><tr id="qgqbi"></tr></form><tr id="qgqbi"><fieldset id="qgqbi"><thead id="qgqbi"><strong id="qgqbi"></strong></thead></fieldset></tr><ul id="qgqbi"></ul><center id="qgqbi"><optgroup id="qgqbi"><div id="qgqbi"></div></optgroup></center><rp id="qgqbi"><input id="qgqbi"><blockquote id="qgqbi"><th id="qgqbi"></th></blockquote></input></rp><tbody id="qgqbi"></tbody><form id="qgqbi"><u id="qgqbi"><fieldset id="qgqbi"></fieldset></u></form><rp id="qgqbi"></rp><b id="qgqbi"><small id="qgqbi"></small></b><dd id="qgqbi"></dd><kbd id="qgqbi"></kbd><code id="qgqbi"><pre id="qgqbi"><ul id="qgqbi"></ul></pre></code><strong id="qgqbi"></strong><cite id="qgqbi"><sub id="qgqbi"></sub></cite><object id="qgqbi"></object><dfn id="qgqbi"></dfn><pre id="qgqbi"></pre><xmp id="qgqbi"></xmp><pre id="qgqbi"></pre><sup id="qgqbi"><form id="qgqbi"><cite id="qgqbi"></cite></form></sup><tt id="qgqbi"><tbody id="qgqbi"><acronym id="qgqbi"><b id="qgqbi"></b></acronym></tbody></tt><input id="qgqbi"></input><acronym id="qgqbi"><samp id="qgqbi"><code id="qgqbi"></code></samp></acronym><nobr id="qgqbi"><pre id="qgqbi"><ul id="qgqbi"><strong id="qgqbi"></strong></ul></pre></nobr><menuitem id="qgqbi"><em id="qgqbi"><wbr id="qgqbi"><mark id="qgqbi"></mark></wbr></em></menuitem><dl id="qgqbi"></dl><rp id="qgqbi"><input id="qgqbi"><div id="qgqbi"></div></input></rp><div id="qgqbi"><button id="qgqbi"><pre id="qgqbi"><meter id="qgqbi"></meter></pre></button></div><address id="qgqbi"></address><thead id="qgqbi"><abbr id="qgqbi"><sup id="qgqbi"></sup></abbr></thead><em id="qgqbi"></em><ul id="qgqbi"><listing id="qgqbi"><wbr id="qgqbi"></wbr></listing></ul><listing id="qgqbi"></listing><wbr id="qgqbi"></wbr><thead id="qgqbi"><abbr id="qgqbi"><strike id="qgqbi"></strike></abbr></thead><menuitem id="qgqbi"></menuitem><pre id="qgqbi"></pre><pre id="qgqbi"></pre><dl id="qgqbi"><delect id="qgqbi"><bdo id="qgqbi"><span id="qgqbi"></span></bdo></delect></dl><ruby id="qgqbi"></ruby><pre id="qgqbi"><strike id="qgqbi"><tt id="qgqbi"><i id="qgqbi"></i></tt></strike></pre><fieldset id="qgqbi"><address id="qgqbi"></address></fieldset><cite id="qgqbi"><sub id="qgqbi"></sub></cite><optgroup id="qgqbi"></optgroup><fieldset id="qgqbi"><address id="qgqbi"></address></fieldset></div> <div class="friend-links"> <a href="http://www.bjcldhs.com">亚洲另类在线欧美制服</a> <a href="http://www.ahlxmyzz.com">色七七在线综合视频</a> <a href="http://www.junzishuo.com">亚洲中文字幕久久精品91</a> <a href="http://www.yhzblp.com">国产精品自在在线免费</a> <a href="http://www.zwlkg.com">久久国产乱子伦精品免费午夜</a> </div> </footer> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> </body><div id="mwzbr" class="pl_css_ganrao" style="display: none;"><pre id="mwzbr"></pre><p id="mwzbr"></p><delect id="mwzbr"><listing id="mwzbr"><span id="mwzbr"><form id="mwzbr"></form></span></listing></delect><ruby id="mwzbr"></ruby><sub id="mwzbr"></sub><nav id="mwzbr"><div id="mwzbr"></div></nav><thead id="mwzbr"><object id="mwzbr"><meter id="mwzbr"><option id="mwzbr"></option></meter></object></thead><kbd id="mwzbr"></kbd><strong id="mwzbr"><dl id="mwzbr"></dl></strong><sub id="mwzbr"><optgroup id="mwzbr"><div id="mwzbr"><thead id="mwzbr"></thead></div></optgroup></sub><small id="mwzbr"></small><ruby id="mwzbr"></ruby><bdo id="mwzbr"><span id="mwzbr"><dfn id="mwzbr"></dfn></span></bdo><dl id="mwzbr"></dl><samp id="mwzbr"><small id="mwzbr"></small></samp><pre id="mwzbr"><dfn id="mwzbr"><strike id="mwzbr"><center id="mwzbr"></center></strike></dfn></pre><dd id="mwzbr"><li id="mwzbr"></li></dd><td id="mwzbr"><li id="mwzbr"></li></td><noframes id="mwzbr"></noframes><div id="mwzbr"><th id="mwzbr"><acronym id="mwzbr"></acronym></th></div><menuitem id="mwzbr"></menuitem><small id="mwzbr"><p id="mwzbr"><sup id="mwzbr"></sup></p></small><u id="mwzbr"></u><ol id="mwzbr"></ol><thead id="mwzbr"><strong id="mwzbr"></strong></thead><th id="mwzbr"><thead id="mwzbr"><pre id="mwzbr"><strike id="mwzbr"></strike></pre></thead></th><center id="mwzbr"></center><u id="mwzbr"></u><del id="mwzbr"><dfn id="mwzbr"></dfn></del><p id="mwzbr"></p><dfn id="mwzbr"></dfn><tt id="mwzbr"></tt><pre id="mwzbr"></pre><strike id="mwzbr"></strike><ol id="mwzbr"></ol><address id="mwzbr"></address><button id="mwzbr"></button><li id="mwzbr"></li><td id="mwzbr"></td><s id="mwzbr"><delect id="mwzbr"></delect></s><form id="mwzbr"></form><abbr id="mwzbr"><strike id="mwzbr"></strike></abbr><label id="mwzbr"></label><pre id="mwzbr"><u id="mwzbr"><thead id="mwzbr"><acronym id="mwzbr"></acronym></thead></u></pre><em id="mwzbr"></em><ins id="mwzbr"><optgroup id="mwzbr"><center id="mwzbr"></center></optgroup></ins><ruby id="mwzbr"></ruby><del id="mwzbr"><cite id="mwzbr"><center id="mwzbr"></center></cite></del><mark id="mwzbr"></mark><code id="mwzbr"></code><ins id="mwzbr"><optgroup id="mwzbr"><strike id="mwzbr"></strike></optgroup></ins><strong id="mwzbr"></strong><pre id="mwzbr"><meter id="mwzbr"><option id="mwzbr"><source id="mwzbr"></source></option></meter></pre><sup id="mwzbr"><font id="mwzbr"><tbody id="mwzbr"></tbody></font></sup><optgroup id="mwzbr"><div id="mwzbr"><acronym id="mwzbr"></acronym></div></optgroup><strong id="mwzbr"></strong><bdo id="mwzbr"><acronym id="mwzbr"><dfn id="mwzbr"><code id="mwzbr"></code></dfn></acronym></bdo><ul id="mwzbr"><strong id="mwzbr"></strong></ul><tr id="mwzbr"><b id="mwzbr"><wbr id="mwzbr"></wbr></b></tr><th id="mwzbr"><span id="mwzbr"><del id="mwzbr"></del></span></th><big id="mwzbr"></big><del id="mwzbr"><code id="mwzbr"><pre id="mwzbr"><u id="mwzbr"></u></pre></code></del><label id="mwzbr"><tfoot id="mwzbr"><em id="mwzbr"></em></tfoot></label><ul id="mwzbr"><strong id="mwzbr"></strong></ul><dfn id="mwzbr"></dfn><legend id="mwzbr"><mark id="mwzbr"></mark></legend><tfoot id="mwzbr"></tfoot><samp id="mwzbr"></samp><pre id="mwzbr"><optgroup id="mwzbr"><strike id="mwzbr"></strike></optgroup></pre><address id="mwzbr"></address><nav id="mwzbr"><div id="mwzbr"><video id="mwzbr"></video></div></nav><dl id="mwzbr"><pre id="mwzbr"></pre></dl><dfn id="mwzbr"></dfn><em id="mwzbr"></em><pre id="mwzbr"></pre><pre id="mwzbr"></pre><thead id="mwzbr"><ruby id="mwzbr"></ruby></thead><strike id="mwzbr"><rp id="mwzbr"></rp></strike><tfoot id="mwzbr"></tfoot><ul id="mwzbr"><strong id="mwzbr"></strong></ul><acronym id="mwzbr"></acronym><rt id="mwzbr"></rt><label id="mwzbr"></label><delect id="mwzbr"></delect><listing id="mwzbr"></listing><progress id="mwzbr"></progress><dfn id="mwzbr"><code id="mwzbr"><pre id="mwzbr"></pre></code></dfn><samp id="mwzbr"></samp><li id="mwzbr"></li><output id="mwzbr"></output><menuitem id="mwzbr"><abbr id="mwzbr"></abbr></menuitem><video id="mwzbr"></video><optgroup id="mwzbr"></optgroup><form id="mwzbr"><u id="mwzbr"></u></form><rp id="mwzbr"></rp><form id="mwzbr"></form><big id="mwzbr"></big><address id="mwzbr"><strong id="mwzbr"></strong></address><dl id="mwzbr"><delect id="mwzbr"><bdo id="mwzbr"><span id="mwzbr"></span></bdo></delect></dl><var id="mwzbr"><acronym id="mwzbr"></acronym></var><li id="mwzbr"></li><acronym id="mwzbr"><strong id="mwzbr"></strong></acronym><s id="mwzbr"><progress id="mwzbr"></progress></s><option id="mwzbr"></option><tr id="mwzbr"><label id="mwzbr"><thead id="mwzbr"></thead></label></tr><bdo id="mwzbr"><span id="mwzbr"><dfn id="mwzbr"></dfn></span></bdo><tbody id="mwzbr"><noframes id="mwzbr"></noframes></tbody><mark id="mwzbr"></mark><li id="mwzbr"></li><div id="mwzbr"><button id="mwzbr"></button></div><sup id="mwzbr"></sup><form id="mwzbr"></form><pre id="mwzbr"><meter id="mwzbr"><nobr id="mwzbr"></nobr></meter></pre><font id="mwzbr"></font><tfoot id="mwzbr"></tfoot><nobr id="mwzbr"><s id="mwzbr"><menuitem id="mwzbr"><listing id="mwzbr"></listing></menuitem></s></nobr><b id="mwzbr"></b><ins id="mwzbr"><optgroup id="mwzbr"><strike id="mwzbr"><rp id="mwzbr"></rp></strike></optgroup></ins><p id="mwzbr"></p><option id="mwzbr"><source id="mwzbr"><menuitem id="mwzbr"></menuitem></source></option><pre id="mwzbr"><u id="mwzbr"></u></pre><var id="mwzbr"><address id="mwzbr"><abbr id="mwzbr"></abbr></address></var><video id="mwzbr"><ol id="mwzbr"><b id="mwzbr"></b></ol></video><strike id="mwzbr"></strike><dfn id="mwzbr"><td id="mwzbr"><tr id="mwzbr"><label id="mwzbr"></label></tr></td></dfn><samp id="mwzbr"><small id="mwzbr"><s id="mwzbr"></s></small></samp><wbr id="mwzbr"><mark id="mwzbr"></mark></wbr><tr id="mwzbr"><label id="mwzbr"><center id="mwzbr"></center></label></tr><option id="mwzbr"><i id="mwzbr"><tr id="mwzbr"><abbr id="mwzbr"></abbr></tr></i></option><pre id="mwzbr"></pre><legend id="mwzbr"></legend><span id="mwzbr"><form id="mwzbr"></form></span><video id="mwzbr"><ol id="mwzbr"><samp id="mwzbr"></samp></ol></video><output id="mwzbr"><u id="mwzbr"></u></output><strike id="mwzbr"></strike><delect id="mwzbr"><strong id="mwzbr"><span id="mwzbr"><form id="mwzbr"></form></span></strong></delect><mark id="mwzbr"></mark><dl id="mwzbr"><small id="mwzbr"><bdo id="mwzbr"></bdo></small></dl><option id="mwzbr"></option><kbd id="mwzbr"><strong id="mwzbr"><sub id="mwzbr"><li id="mwzbr"></li></sub></strong></kbd><ins id="mwzbr"></ins><track id="mwzbr"></track><pre id="mwzbr"><strike id="mwzbr"><option id="mwzbr"><source id="mwzbr"></source></option></strike></pre><legend id="mwzbr"></legend><big id="mwzbr"><legend id="mwzbr"><s id="mwzbr"><ul id="mwzbr"></ul></s></legend></big><em id="mwzbr"></em><ol id="mwzbr"></ol><sub id="mwzbr"></sub><legend id="mwzbr"></legend><form id="mwzbr"><u id="mwzbr"><fieldset id="mwzbr"></fieldset></u></form></div></html>