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src="http://tyunfile.71360.com/UpLoadFile/2019/7/4/12/636978386591645266_hbhhgs_4803719.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gqifwiu" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/4/12/636978386591645266_hbhhgs_4803719.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qfcjb8t" 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>河北省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>黑龍江變徑彎頭公司</p><p><span>***更新：</span>2020-06-04 12:05:23</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="cry88gv" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">河北海浩高壓法蘭管件集團(tuán)有限公司</a></p><p><span>聯(lián)系人：</span>董學(xué)文</p><p><span>郵箱: </span>1390756017@qq.com</p><p><span>電話: </span>15028729866</p><p><span>傳真: </span>0317_6866720</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0317-6866720</p><p><span>地址: </span>河北省孟村縣辛大路付林路段</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="etldfmj" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3ax39r3" class="box"><p><p style="text-indent:25px">施工留意 1、施工時應(yīng)防止地下水及雨水的浸泡，若端頭不小心浸水，銜接外套前應(yīng)做干燥處理。 2、管材應(yīng)儲存在平坦的場所，整齊堆放，堆放高度應(yīng)小于1.5米。 3、管材吊裝在輕裝輕放，禁磕碰、投擲，禁用鋼絲繩直吊管身。 4、保溫層及防腐層應(yīng)防止火焰直接接觸。現(xiàn)場裝置請按下列程序:管溝開挖--基底處理(排水、墊砂)-下管--鋼管焊接-檢驗(水壓)-裝置(試壓)-發(fā)泡-封發(fā)泡孔。彎頭、接頭裝置能夠派遣人員到工程現(xiàn)場進(jìn)行接頭的保溫作業(yè)，包括接頭外套管的裝置、接頭外套管與主管的銜接和密封以及現(xiàn)場接頭的發(fā)泡作業(yè)，黑龍江變徑彎頭公司，可是不包括接頭部分鋼管的焊接作業(yè)。 (1)方法套袖接頭，在該種方法中，接頭套管選用與預(yù)制保溫管道套管相同材質(zhì)、密度的聚乙烯套管，聚乙烯接頭套管和主管間選用熱收縮帶進(jìn)行銜接和密封，黑龍江變徑彎頭公司，黑龍江變徑彎頭公司，保證接頭的水密性。然后在接頭套管上的發(fā)泡孔進(jìn)行接頭發(fā)泡，發(fā)泡完成后選用高密度聚乙烯封堵，經(jīng)過補(bǔ)片或熱熔焊接的方法密封發(fā)泡孔。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江變徑彎頭公司" src="http://tyunfile.71360.com/UpLoadFile/2019/7/4/12/636978386591645266_hbhhgs_4803719.jpg"></div><p style="text-indent:25px">結(jié)構(gòu)機(jī)理 1、高密度聚乙烯防腐層:高密度聚乙烯管保護(hù)彎頭避免腐蝕物、植物腐蝕，延伸管件的使用壽命。支撐作業(yè)管并能承受必定的外部荷載，保證作業(yè)管正常作業(yè)。 2、聚氨酯泡沫層: 耐高溫、保證介質(zhì)溫度，保證外護(hù)管表面堅持常溫，內(nèi)作業(yè)管件的保溫，保證泡沫不被炭化。 3、作業(yè)鋼管:保證運(yùn)送介質(zhì)正?；顒?。若按壓力等級來分，大約有十七種，和美國的管子標(biāo)準(zhǔn)是相同的，有:Sch5s、Sch10s、Sch10、Sch20、Sch30、Sch40s、STD、Sch40、Sch60、Sch80s、XS;Sch80、Sch100、Sch120、Sch140、Sch160、XXS，其間**常用的是STD和XS兩種。按彎頭的角度分，有45°彎頭，有90°彎頭和180°彎頭。這樣一來彎頭的品種是很多的，定貨時定單常采用如下標(biāo)明辦法:如"LR STD 90° 8"，標(biāo)明長半徑，壓力等級為STD，90°的8"彎頭;又如，"SR XS 45° 4"標(biāo)明短半徑，壓力等級為XS，45°的4"彎頭。沖壓焊接彎頭，采用與管材相同原料的板材用沖壓模具沖壓成半塊環(huán)形彎頭，然后將兩塊半環(huán)彎頭進(jìn)行組對焊接成形。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江變徑彎頭公司" src="http://tyunfile.71360.com/UpLoadFile/2019/7/4/12/636978386592114532_hbhhgs_5322843.jpg"></div><p style="text-indent:25px">變徑彎頭也叫異徑彎頭，是來連接兩個不同的管徑的管子做轉(zhuǎn)向的管件。是用一個標(biāo)準(zhǔn)的彎頭坯剪裁成一個V形口的彎頭，然后施壓，借助于常規(guī)或**沖壓設(shè)備的動力，使彎頭坯在模具里直接受到變形力并進(jìn)行變形，從而獲得一定形狀，尺寸和性能的產(chǎn)品零件的生產(chǎn)技術(shù)，慢慢的在施壓作用下逐漸變成圓。變徑彎頭也叫異徑彎頭，是來連接兩個不同的管徑的管子做轉(zhuǎn)向的管件。是用一個標(biāo)準(zhǔn)的彎頭坯剪裁成一個V形口的彎頭，然后施壓，借助于常規(guī)或**沖壓設(shè)備的動力，使彎頭坯在模具里直接受到變形力并進(jìn)行變形，從而獲得一定形狀,尺寸和性能的產(chǎn)品零件的生產(chǎn)技術(shù)，慢慢的在施壓作用下逐漸變成圓，成為一個圓形環(huán)殼，焊接成型，然后用彎頭整形設(shè)備整形就大功告成了。此類工藝在業(yè)內(nèi)被叫做“抽條子”。管坯，模具和設(shè)備是變徑彎頭加工的三要素。變徑彎頭加工是一種金屬冷變形加工方法。它是金屬塑性加工（或壓力加工）的主要方法之一，也隸屬于材料成型工程技術(shù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江變徑彎頭公司" src="http://tyunfile.71360.com/UpLoadFile/2019/7/4/12/636978386592896642_hbhhgs_4888747.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/145042.html</p></div></div></div></div></div><div id="b7m9ovs" class="page-right 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