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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rntjxvr" 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>云南省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>昆明冷鍍鋅圓管廠家批發(fā)價(jià),鍍鋅圓管</p><p><span>***更新：</span>2021-02-01 00:21:48</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="p57bzpd" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">云南贛僑貿(mào)易有限公司</a></p><p><span>聯(lián)系人：</span>榮總</p><p><span>郵箱: </span>2922963534@qq.com</p><p><span>電話: </span>13888350791</p><p><span>傳真: </span>138_</p><p><span>網(wǎng)址: </span>http://www.yngqwz.com</p><p><span>手機(jī): </span>138-8835</p><p><span>地址: </span>經(jīng)開(kāi)區(qū)寶象物流中心A區(qū)1棟3層319室 </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="n3bn5jp" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="5v5f5xf" class="box"><p><p style="text-indent:25px">在焊接鍍鋅圓管時(shí)，熱鍍鋅圓管利用火焰切割時(shí),應(yīng)先切開(kāi)腹板后再切割翼緣部門,禁止應(yīng)力變成開(kāi)裂.必要時(shí)應(yīng)在切割前利用切割火焰對(duì)切割部位正在預(yù)熱解決預(yù)熱溫度≥200℃。對(duì)切割棱角部位應(yīng)正在圓弧過(guò)渡解決,圓弧半徑不小于25mm，昆明冷鍍鋅圓管廠家批發(fā)價(jià),工字鋼切割完結(jié)后,應(yīng)立刻采取焊接刨錘對(duì)切割部位正在輕擊祛除應(yīng)力解決。焊材的控制：確保采購(gòu)的是正規(guī)渠道的焊材，有質(zhì)保書(shū)、合格證，符合工藝要求；焊材的驗(yàn)收、領(lǐng)發(fā)料手續(xù)要正規(guī)齊全，焊條頭回收控制嚴(yán)格，以確保流向、用量；焊材要嚴(yán)格按工藝烘烤，并一次發(fā)放不大于半天用量。焊接工藝方法：確保熱鍍鋅鋼管特殊操作方法的嚴(yán)格實(shí)施，昆明冷鍍鋅圓管廠家批發(fā)價(jià)，按焊接工藝進(jìn)行焊前坡口檢查，施焊工藝參數(shù)、操作手法控制，焊后外觀質(zhì)量檢查，必要時(shí)增加焊后無(wú)損檢測(cè)，昆明冷鍍鋅圓管廠家批發(fā)價(jià)。控制焊接層次、每道口的焊材用量。焊機(jī)：焊機(jī)是施焊的機(jī)具，必須確保性能靠譜、符合工藝需要；焊機(jī)必須有檢定合格的電流、電壓表，以確保焊接工藝的正確實(shí)施。焊接電纜不能過(guò)長(zhǎng)，較長(zhǎng)時(shí)要調(diào)整焊接參數(shù)。鍍鋅圓管廠家批發(fā)，云南贛僑貿(mào)易供應(yīng)。昆明冷鍍鋅圓管廠家批發(fā)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明冷鍍鋅圓管廠家批發(fā)價(jià),鍍鋅圓管" src="https://tyunfile.71360.com/WaterMark/UploadFile/ganqiao2020/637357112294462891/7248900.png"></div><p style="text-indent:25px">熱鍍鋅鋼管鋼管基體與熔融的鍍液發(fā)生復(fù)雜的物理、化學(xué)反應(yīng)，形成耐腐蝕的結(jié)構(gòu)緊密的鋅一鐵合金層。合金層與純鋅層、鋼管基體融為一體。故其耐腐蝕能力強(qiáng)。冷鍍鋅鋼管鋅層是電鍍層，鋅層與鋼管基體單獨(dú)分層。鋅層較薄，鋅層簡(jiǎn)單附著在鋼管基體上，容易脫落。故其耐腐蝕性能差。在新建住宅中，禁止使用冷鍍鋅鋼管作為給水管。鍍鋅鋼管的用途常說(shuō)的鍍鋅管，鍍鋅管的用途現(xiàn)在煤氣、暖氣用的那種鐵管也是鍍鋅管，鍍鋅管作為水管，使用幾年后，管內(nèi)產(chǎn)生大量銹垢，流出的黃水不只污染潔具，而且?jiàn)A雜著不光滑內(nèi)壁滋生的細(xì)菌，銹蝕造成水中重金屬含量過(guò)高，嚴(yán)重危害人體的健康。六七十年代，國(guó)際上發(fā)達(dá)國(guó)家開(kāi)始開(kāi)發(fā)新型管材，并陸續(xù)禁用鍍鋅管。中國(guó)建設(shè)部等四部委也發(fā)文明確從二000年起禁用鍍鋅管，目前新建小區(qū)的冷水管已經(jīng)很少使用鍍鋅管了，有些小區(qū)的熱水管使用的是鍍鋅管。昆明6米鍍鋅圓管規(guī)格型號(hào)表昆明鍍鋅圓管廠家報(bào)價(jià)，云南贛僑貿(mào)易供應(yīng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明冷鍍鋅圓管廠家批發(fā)價(jià),鍍鋅圓管" src="https://tyunfile.71360.com/WaterMark/UploadFile/ganqiao2020/637357111812626953/2029222.png"></div><p style="text-indent:25px">你知道鍍鋅圓管在鍍鋅時(shí)都有哪些特點(diǎn)嗎？鍍鋅圓管鍍鋅特點(diǎn)要求，鍍鋅圓管鋅鍍層的外觀呈青白色，標(biāo)準(zhǔn)電極電位為-0.76V，易溶于酸，溶于堿，是典型的兩性金屬。鋅在干燥空氣中幾乎不發(fā)生變化，鋅腐蝕的臨界濕度大于70%，因此在潮濕大氣中能與二氧化碳和氧作用生成一層主要由堿式碳酸鋅組成的薄膜，這層膜有一定的緩蝕作用，鋅與硫化氫等含硫化物起反應(yīng)生成硫化鋅﹔鋅易受氯離子浸蝕，故在海水中不穩(wěn)定。鍍鋅圓管的鋅在密閉或通風(fēng)不良，空氣潮濕的條件下，與非金屬材料的揮發(fā)物(低分子羧酸，醛，酚，氨等)接觸時(shí)，鋅易遭腐蝕，生成白色疏松的腐蝕產(chǎn)物，俗稱”白霜”。鋅在高溫，高濕，密閉條件下，與膠木，油漆，木材釋放的揮發(fā)物接觸，鋅有生長(zhǎng)細(xì)絲狀單晶的傾向，俗稱”長(zhǎng)毛”。</p><p style="text-indent:25px">鍍鋅鋼管分冷鍍管、熱鍍管，前者已被禁用，后者還被國(guó)家提倡暫時(shí)能用.熱鍍鋅管熱鍍鋅管是使熔融金屬與鐵基體反應(yīng)而產(chǎn)生合金層，從而使基體和鍍層二者相結(jié)合。熱鍍鋅是先將鋼管進(jìn)行酸洗，為了去除鋼管表面的氧化鐵，酸洗后，通過(guò)氯化銨或氯化鋅水溶液或氯化銨和氯化鋅混合水溶液槽中進(jìn)行清洗，然后送入熱浸鍍槽中。熱鍍鋅具有鍍層均勻，附著力強(qiáng)，使用壽命長(zhǎng)等優(yōu)點(diǎn)。冷鍍鋅管冷鍍鋅就是電鍍鋅，鍍鋅量很少，只有10－50g/m2，其本身的耐腐蝕性比熱鍍鋅管相差很多。正規(guī)的鍍鋅管生產(chǎn)廠家，為了保證質(zhì)量，大多不采用電鍍鋅（冷鍍）。只有那些規(guī)模小、設(shè)備陳舊的小企業(yè)采用電鍍鋅，當(dāng)然他們的價(jià)格也相對(duì)便宜一些。目前建設(shè)部已正式下文，淘汰技術(shù)落后的冷鍍鋅管，今后不準(zhǔn)用冷鍍鋅管作水、煤氣管。鍍鋅鋼管的鋅鍍層的使用溫度不得超過(guò)2500C,在此溫度上鋅結(jié)晶組織變形，發(fā)脆，耐蝕性下降。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明冷鍍鋅圓管廠家批發(fā)價(jià),鍍鋅圓管" src="https://tyunfile.71360.com/WaterMark/UploadFile/ganqiao2020/637357112176943359/2321215.png"></div><p style="text-indent:25px">鍍鋅圓管表面有熱浸鍍或電鍍鋅層的焊接鋼管。鍍鋅可增加鋼管的抗腐蝕能力，延長(zhǎng)使用壽命。鍍鋅管的用途很廣，除作輸水、煤氣、油等一般低壓力流體的管線管外，還用作石油工業(yè)特別是海洋油田的油井管、輸油管，化工焦化設(shè)備的油加熱器、冷凝冷卻器、煤餾洗油交換器用管，以及棧橋管樁、礦山坑道的支撐架用管等。尺寸標(biāo)準(zhǔn)為：DN15外徑為21.3mm，DN20外徑為26.9mm，DN25型號(hào)外徑為33.7mm，DN32型號(hào)外徑42.mm，DN40型號(hào)外徑為48.3mmDN50型號(hào)外徑為60mm，DN65型號(hào)外徑為76.1mm，DN80熱鍍鋅圓管是使熔融金屬與鐵基體反應(yīng)生成合金層，使基體和鍍層結(jié)合在一起。昆明6米鍍鋅圓管規(guī)格型號(hào)表</p><p style="text-indent:25px">鍍鋅圓管焊接前的準(zhǔn)備與普通低碳鋼相同。昆明冷鍍鋅圓管廠家批發(fā)價(jià)</p><p style="text-indent:25px">平常在焊接鍍鋅圓管的時(shí)候要注意哪些事項(xiàng)呢？鍍鋅圓管廠家為您講解：1.平常的熱鍍鋅圓管都是軋制截面,鑒于出產(chǎn)工藝差,翼緣內(nèi)邊有1:10坡度.工字鋼的軋制不同于平常工字鋼只用一套水平軋輥,鑒于其翼緣較寬且無(wú)斜度,故須增設(shè)一組立式軋輥同時(shí)正在輥軋。所以,其軋制工藝和設(shè)置都比平常軋機(jī)繁復(fù).中國(guó)可出產(chǎn)的較大軋制H型鋼高度為800mm,大于了只能是焊接組合截面.2.人的因素是熱鍍鋅圓管施焊的控制要點(diǎn)。由于缺乏必要的焊后控制手段，易偷工減料，影響質(zhì)量；同時(shí)鍍鋅管的焊接特殊性使得不容易確保焊接質(zhì)量。昆明冷鍍鋅圓管廠家批發(fā)價(jià)</p><p style="text-indent:25px">云南贛僑貿(mào)易有限公司位于經(jīng)開(kāi)區(qū)寶象物流中心A區(qū)1棟3層319室。云南贛僑貿(mào)易致力于為客戶提供良好的鍍鋅管，螺旋管，無(wú)縫管，焊管，一切以用戶需求為中心，深受廣大客戶的歡迎。公司從事建筑、建材多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。云南贛僑貿(mào)易秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營(yíng)理念，全力打造公司的重點(diǎn)競(jìng)爭(zhēng)力。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3098254.html</p></div></div></div></div></div><div id="nt3vbfd" class="page-right twoColRt"><div id="t5hxj3p" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="5fhft5p" 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