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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bqnkh72" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/jhhsm/2019/6/636959543149289467/6369595431492894676091816.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="oi3egnp" 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>新疆維吾爾自治區(qū)</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>頭屯河區(qū)球墨鑄鐵管聯(lián)系電話</p><p><span>***更新：</span>2020-06-27 00:33:14</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="7fczgxu" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">新疆錦宏皓商貿(mào)有限公司</a></p><p><span>聯(lián)系人：</span>閆會(huì)平</p><p><span>郵箱: </span>896446354@qq.com</p><p><span>電話: </span>13999253221</p><p><span>傳真: </span>0991_6885581</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0991-6868255</p><p><span>地址: </span>新疆烏魯木齊市米東區(qū)米東南路西三巷1151號(hào)華凌建材進(jìn)出口基地鋼材區(qū)25棟26號(hào)商鋪</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="rlikmy2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="l8a3fvd" class="box"><p><p> 下面的幾張球墨鑄鐵管腐蝕失效的照片是這個(gè)報(bào)告中的附圖。高質(zhì)量生產(chǎn)的球墨鑄鐵管基本能夠滿足輸水管道的一般應(yīng)用。而質(zhì)量管控差的鑄管企業(yè)生產(chǎn)的球墨鑄鐵管基本上與手工防腐鋼管相差無(wú)幾。因此，不要以為球墨鑄鐵管就一定比鋼管耐腐蝕。當(dāng)電阻率小于100歐姆米時(shí)，美國(guó)墾務(wù)局（類似于國(guó)內(nèi)水務(wù)公司）建議普通防腐的球墨鑄鐵管采取陰極保護(hù)，而重防腐（聚合物涂層）球墨鑄鐵管當(dāng)土壤電阻率小于25歐姆米時(shí)也需要陰極保護(hù)（參見CorrosionConsiderationsforBuriedMetallicWaterPipe2004）。新興鑄管在文章和報(bào)告中用工廠生產(chǎn)的球墨鑄鐵管與國(guó)內(nèi)手工防腐（外防腐為三油兩布，頭屯河區(qū)球墨鑄鐵管聯(lián)系電話，頭屯河區(qū)球墨鑄鐵管聯(lián)系電話，內(nèi)防腐為水泥砂漿或IPN8710涂料）的輸水鋼管做比較，一個(gè)是工廠程序化機(jī)械生產(chǎn)，質(zhì)量管控嚴(yán)格的的球墨鑄鐵管，另一個(gè)是手工操作，防腐質(zhì)量無(wú)法把控的輸水鋼管。由于加工手段不同，雖然它們采用的防腐材料基本相同，但實(shí)際防腐效果相差甚遠(yuǎn)。不過從另一方面提醒我們，除了現(xiàn)場(chǎng)補(bǔ)口施工，手工防腐的輸水鋼管應(yīng)當(dāng)***禁止生產(chǎn)和使用。球墨鑄鐵管防腐形式除了常規(guī)的內(nèi)襯水泥砂漿和管外噴涂瀝青外還有其它多種防腐，頭屯河區(qū)球墨鑄鐵管聯(lián)系電話，重防腐為內(nèi)外噴涂環(huán)氧或聚氨酯。而新型的輸水鋼管內(nèi)外防腐通常為聚氨酯。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="頭屯河區(qū)球墨鑄鐵管聯(lián)系電話" src="http://tyunfile.71360.com/UpLoadFile/jhhsm/2019/6/636959543149289467/6369595431492894676091816.jpg"></div><p> 還有些工廠采用圓形試塊，例如Ф15mm、Ф25mm、Ф30mm不等。鐵液理畢后用取樣勺由鐵液表面以下200mm處出液并澆成試塊并冷至暗紅色方可水淬冷卻球良的塊外圓比灰鑄鐵大得多外觀清潔光亮很有砂通常立澆的三角試塊兩側(cè)有縮陷臥澆塊頂面或兩側(cè)有縮陷試塊冷卻敲斷后球化良好試，呈銀白色或銀灰色瓷狀斷口前列白口清晰中間有疏松若斷口呈銀白色并有放射狀花紋則表球劑加入量偏高產(chǎn)生的碳化物較多此時(shí)試塊入時(shí)發(fā)出“拍拍”的脆裂聲試片輕擊即斷且新?lián)舻目诤軡獾碾娛瘹馕兑虼溯^好澆注時(shí)進(jìn)行浮硅育若口呈銀灰色并有均勻分布的小黑點(diǎn)若斷呈色晶，則表明球化失?。ㄒ娤卤恚Ｈ窃嚇忧蚧|(zhì)量的兩種鑒別方法說明：1)球化良好的三角試塊經(jīng)淬水打斷后立即會(huì)有電石氣味逸出。2)白口深度與球墨鑄鐵種類、類型和鐵液成分有關(guān)，因此表中沒有給出數(shù)據(jù)，稀土鎂球墨鑄鐵白口深度不十分明顯。3澆注過程判斷（1）球墨鑄鐵鐵液澆入鑄型后，如澆口杯一直向下凹縮，而且表面非常光滑，說明球化良好；如澆口杯上部結(jié)一層硬殼，也進(jìn)行縮凹，說明鐵液溫度低。（2）在澆注過程中，砂型表面飛濺的圓形扁鐵豆部分有麻點(diǎn)（凹坑），說明球化良好。4黑邊鑒定法球處理完畢后，用樣勺澆注一塊厚10mm左右的試塊。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="頭屯河區(qū)球墨鑄鐵管聯(lián)系電話" src="http://tyunfile.71360.com/UpLoadFile/jhhsm/2019/6/636959543241897858/6369595432418978587567592.jpg"></div><p style="text-indent:25px">“球墨鑄鐵管|球墨給水管|自來(lái)水管道|井蓋”新疆錦宏皓商貿(mào)有限公司，公司位于：新疆烏魯木齊市米東區(qū)米東南路西三巷1151號(hào)華凌建材進(jìn)出口基地鋼材區(qū)25棟26號(hào)商鋪，多年來(lái)，錦宏皓商貿(mào)堅(jiān)持為客戶提供好的服務(wù)。歡迎廣大新老客戶來(lái)電，來(lái)函，親臨指導(dǎo)，洽談業(yè)務(wù)。錦宏皓商貿(mào)期待成為您的長(zhǎng)期合作伙伴！</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/404707.html</p></div></div></div></div></div><div id="bvsk3au" class="page-right twoColRt"><div id="8pro23q" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xr782vz" class="recomPic likePro"><a href="http://m.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="ke2xjqs" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img 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