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src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203121504765625/5330315.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="kmiki72" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203121504765625/5330315.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3usoari" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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Q345C鍍鋅方管廠家報價</p><p><span>***更新：</span>2020-06-19 20:20:01</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="jqhduv2" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">云南貿(mào)軒商貿(mào)有限公司</a></p><p><span>聯(lián)系人：</span>謝經(jīng)理</p><p><span>郵箱: </span>1339843057@qq.com</p><p><span>電話: </span>13888426708</p><p><span>傳真: </span>138_</p><p><span>網(wǎng)址: </span>http://www.maoxuan666.com</p><p><span>手機: </span>138-88426708</p><p><span>地址: </span>云南省昆明經(jīng)開區(qū)宏錫路4-1-2號鐵公雞物流園二號寫字樓408號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="eqw8u3f" class="page-proshow02"><p class="title">詳細說明</p><div id="8hi8223" class="box"><p><p> 鍍鋅方管鍍鋅層的質(zhì)檢 </p> <p> <br /> </p> <p> 所有鍍件表面應(yīng)是清潔的，昆明Q345C鍍鋅方管廠家報價，無損傷的。其主要表面應(yīng)是平滑的，無結(jié)瘤、鋅灰和露鐵現(xiàn)象。 2 中國標準金屬覆蓋層鋼鐵制品熱鍍鋅層技術(shù)要求表面上極少量的儲運斑點 1)不應(yīng)作為拒收的理由。注：1)指熱鍍鋅后的制件在儲運過程中，由于環(huán)境中潮濕空氣的作用，在鍍件表面形成很淺的白色斑點。必要時，昆明Q345C鍍鋅方管廠家報價，應(yīng)由需方提供(或認可)能說明鍍層外觀要求的樣品。 </p> 云南貿(mào)軒商貿(mào)有限公司經(jīng)銷昆鋼，柳鋼，鞍鋼，重鋼，攀鋼，昆明Q345C鍍鋅方管廠家報價，萊鋼，匯鋼，玉昆，仙福，方圓等各大鋼廠鋼材，年銷售量達8萬噸以上。 <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明Q345C鍍鋅方管廠家報價" src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203121504765625/5330315.jpg"></div><p> 對熱鍍鋅方矩管生產(chǎn)中相關(guān)技術(shù)規(guī)定的介紹 </p> <p> <br /> </p> <p> 鍍鋅矩形管在出廠前的質(zhì)量檢驗過程，主要涉及鍍鋅矩形管在使用中的性能能否正常使用。鍍鋅矩形管的彎曲點位置是金屬材料一定的屈服現(xiàn)象。 </p> <p> 鍍鋅鋼管試樣的**早曲率形成時間是非常重要的，因為它能準確地測定鍍鋅矩形管在外壓作用下的反應(yīng)時間。如果對鍍鋅矩形管的壓力點進行測試，它可以生根。根據(jù)客戶的實際要求，鍍鋅矩形管應(yīng)適當加強，以獲得更大的公差。云南貿(mào)軒貿(mào)易有限公司經(jīng)營灌漿管、鍍鋅方管、鍍鋅扁鋼、聲測管等。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明Q345C鍍鋅方管廠家報價" src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203121506064453/143531.jpg"></div><p> 鍍鋅方管的成型方法介紹： </p> <p> 1、實彎： </p> <p> 實彎，顧名思義是壓實了彎折，實彎時內(nèi)外輥與管坯內(nèi)外壁雙向壓實。 </p> <p> (1)實彎的優(yōu)點是反彈小，成型準確，而且只要輥型準確，內(nèi)角成型的R比較準確。 </p> <p> (2)實彎的缺點是有拉伸/減薄效應(yīng)。第壹，實彎會使彎折處產(chǎn)生拉伸，拉伸效應(yīng)使彎折線縱向的長度縮短;第二，實彎彎折處金屬會因拉伸而變薄。 </p> <p> 2、空彎： </p> <p> 空彎是通過外輥與管坯外壁的單向接觸形成彎矩使帶料彎折，空彎會使彎折線產(chǎn)生壓縮，壓縮效應(yīng)使彎折線縱向伸長，彎折處金屬出現(xiàn)堆積變厚，這就是空彎的壓縮/增厚效應(yīng)。 </p> <p> (1)空彎的優(yōu)點是可以在無法進行實彎時進行邊長的彎折，比如方矩管的上邊/側(cè)邊同步彎折和精整?？諒澾€可以彎折R<0.2t的內(nèi)角而不致管壁發(fā)生斷裂。 </p> <p> (2)空彎的缺點是在上邊/側(cè)邊同步空彎時，由于上輥和下輥同時產(chǎn)生壓力，成型力容易超越臨界點，造成邊部失穩(wěn)內(nèi)凹，并且也會影響到機組穩(wěn)定運行和成型質(zhì)量。這也是方矩管和圓管空彎成型時不同的特點 </p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/318002.html</p></div></div></div></div></div><div id="umsjklc" class="page-right twoColRt"><div id="qulctkg" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kipqc3q" 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配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="orijplb" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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