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在螺旋3PEfangfugangguandeshiyongheshengchanjinchengzhong，renleifaminglehenduodexiudehanjieheshengchandefangfa，dadacujinlezheyixingyedewenbusudefazhan，tongshiyeshidecixingyezaifazhanzhongdedaoyouhua。qizhongmaihuzidonghanshizai1940nianfamingdeyizhongxindehanjiefangfa，taheqianmiandeshougonghanxiangtongdedifangshitahaishicaiyongzhabaohu，danshizhegezhabushihantiaodepi，shizhuanmenronglianchulaidehan。gaichenghansiyihou，yongsonghansidezhuangzhihehansipan，lianxudisonggeihansi，zhezhonghanjiefangfashilianxusongjindehansi，zaikeronghuadekelizhuangdehanjifugaixiayinrandianhu，shihansi、母材和焊劑的一部分熔化和蒸發構成一個空腔，電弧是在空腔裏麵穩定燃燒,所以把它稱之為埋弧自動焊。電弧是埋在空腔裏邊的。這個焊係統由一個漏鬥裝的焊通過一個管道輸送到要焊接的前麵.二個不同是不采用焊條，采用焊絲，因為焊絲可以連續送給；焊(han)條(tiao)，我(wo)們(men)燒(shao)完(wan)一(yi)根(gen)焊(han)條(tiao)總(zong)得(de)有(you)一(yi)個(ge)焊(han)條(tiao)頭(tou)就(jiu)給(gei)扔(reng)了(le)，而(er)且(qie)操(cao)作(zuo)得(de)停(ting)下(xia)來(lai)，換(huan)焊(han)條(tiao)然(ran)後(hou)再(zai)焊(han)。而(er)此(ci)種(zhong)焊(han)接(jie)方(fang)法(fa)與(yu)其(qi)他(ta)方(fang)法(fa)相(xiang)比(bi)是(shi)有(you)很(hen)大(da)的(de)優(you)點(dian)的(de).埋弧焊3PE防腐螺旋鋼管的這種焊接這種方法，個優點是完全實現了自動化；二個優點,它是在埋弧底下進行焊接，所以它的熱交換和保護性能比較強,焊接出來的質量比較高；三個優點，由於埋弧自動焊中電弧埋在焊底下，所以它可以采用大電流,焊接效率比較高。
Polyethylenestructure3PEanticorrosivecoatingofsteelpipeinsulation,3PEanti-corrosioninsulationperformanceandtheheatlossisonlytwenty-fivepercentofthetraditionalpipe,orlong-termoperationcansavemoreresources,lowerenergycost,andstillhasarelativelystrongwaterproofandcorrosionresistance,anddoesnotneedatrench,directlyyoucanbuywaterorunderground,isalsointheconstructionissimpleandrapid,comprehensivecostisalsorelativelylow,undertheconditionoflowtemperatureandhasgoodcorrosionresistanceandimpactresistance,andalsocanbedirectlyembeddedintheenvironmentofpermafrost.Polyethylenethreelayerprotectivelayer,alsoknownas3PEanti-corrosionsteelpipe,isinrecentyearstheintroductionofadvancedanti-corrosiontechnologyfromabroad.Itiscalledfusionbondedepoxy/extrudedpolyethyleneprotectivelayerstructure,thestructureconsistsofthreelayers:thebottomlayerfusionbondedepoxy(over80m);themiddlelayerisadhesive(170-250m);thesurfacelayerofextrudedpolyethylene(about about