3pe防腐鋼管在生產過程中為了不影響管口焊接在預留10公(gong)分(fen)左(zuo)右(you)的(de)預(yu)留(liu)段(duan)，然(ran)而(er)因(yin)鋼(gang)管(guan)堆(dui)放(fang)時(shi)間(jian)較(jiao)長(chang)
，管(guan)端(duan)金(jin)屬(shu)腐(fu)蝕(shi)導(dao)致(zhi)的(de)管(guan)端(duan)出(chu)現(xian)翹(qiao)邊(bian)。如(ru)布(bu)急(ji)於(yu)使(shi)用(yong)在(zai)露(lu)天(tian)堆(dui)積(ji)時(shi)應(ying)在(zai)管(guan)端(duan)進(jin)行(xing)遮(zhe)蓋(gai)

，防(fang)止(zhi)雨(yu)水(shui)造(zao)成(cheng)管(guan)端(duan)腐(fu)蝕(shi)。可(ke)在(zai)管(guan)端(duan)金(jin)屬(shu)暴(bao)露(lu)處(chu)塗(tu)刷(shua)可(ke)焊(han)防(fang)鏽(xiu)漆(qi)，以(yi)防(fang)止(zhi)防(fang)腐(fu)管(guan)在(zai)貯(zhu)存(cun)時(shi)期(qi)因(yin)腐(fu)蝕(shi)導(dao)致(zhi)防(fang)腐(fu)層(ceng)翹(qiao)邊(bian)。在(zai)生(sheng)產(chan)過(guo)程(cheng)中(zhong)嚴(yan)格(ge)控(kong)製(zhi)管(guan)端(duan)預(yu)留(liu)處(chu)焊(han)縫(feng)餘(yu)高(gao)的(de)修(xiu)磨(mo)質(zhi)量(liang)。在(zai)焊(han)縫(feng)處(chu)聚(ju)乙(yi)烯(xi)坡(po)口(kou)外(wai)與(yu)管(guan)體(ti)別(bie)的(de)部(bu)位(wei)相(xiang)同(tong)，使(shi)環(huan)氧(yang)粉(fen)末(mo)保(bao)存(cun)長(chang)度(du)>20mm，以防止焊縫處環氧粉末底部先被腐蝕而導致3PE防腐層翹邊。管端焊縫修磨應從焊縫修磨開端處到聚乙烯倒角處應有10-20mmmeiyouhanfengyugaodeyuguantixiangtongdejuyixicengpingzhengduan，yiquebaoguanduanjuyixipokouchurouniezhanjiezhiliang。hanfengxiumohoudeyugaoyingjinliangzuodaoyuguantipingqi
，buyaoyouxianzhedeyugao
，yifangzhizaidamojuyixicengdaojiaoshi
，jianghuanyangfenmoyitongdamodiao。weixiumodedingduanyuxiumochudeguoduduandaojiao，yeyingyujuyixicengdaojiaoxiangtong(≤30°)fangzhiyinpokouchufangfucengzhanjieqianhaochengxianjuyixicengqiaobian。yuliuduanhuanyangfenmotucengzhiyaoweihuwanzheng。guanduanjuyixipokoujiagongyibanchangjiadouxuanyonggangsilundamofangshi，zheyanghuisunhuaihuanyangfenmotuceng。yinggaiyongjixiejiagongpokou
，daokoudicengyaoyouxianweishebeilaikongzhidaojudejindaoshendu，fangzhishangjihuanyangfenmotucengshoudaomosun。