螺旋焊(han)管(guan)是(shi)將低(di)碳(tan)碳(tan)素結構鋼或低(di)合(he)(he)金結構鋼鋼帶按一(yi)定的(de)(de)螺旋線的(de)(de)角(jiao)度(du)（叫成型角(jiao)）卷(juan)成管(guan)坯，然后將管(guan)縫焊(han)接(jie)起來制成，它可以用(yong)較窄的(de)(de)帶鋼生產大直徑的(de)(de)鋼管(guan)。其規(gui)格用(yong)外徑*壁厚表示，焊(han)管(guan)應保(bao)證水(shui)壓(ya)試驗、焊(han)縫的(de)(de)抗拉強度(du)和冷彎性(xing)能要符合(he)(he)規(gui)定。

檢(jian)(jian)(jian)(jian)驗(yan)(yan)工藝：原材料檢(jian)(jian)(jian)(jian)驗(yan)(yan)——校平檢(jian)(jian)(jian)(jian)驗(yan)(yan)——對接焊(han)檢(jian)(jian)(jian)(jian)驗(yan)(yan)——成(cheng)型檢(jian)(jian)(jian)(jian)驗(yan)(yan)——內(nei)焊(han)檢(jian)(jian)(jian)(jian)驗(yan)(yan)——外(wai)焊(han)檢(jian)(jian)(jian)(jian)驗(yan)(yan)——切管檢(jian)(jian)(jian)(jian)驗(yan)(yan)——超聲(sheng)波檢(jian)(jian)(jian)(jian)驗(yan)(yan)——坡口檢(jian)(jian)(jian)(jian)驗(yan)(yan)——外(wai)形(xing)尺(chi)寸檢(jian)(jian)(jian)(jian)驗(yan)(yan)——X射線檢(jian)(jian)(jian)(jian)驗(yan)(yan)——水壓試驗(yan)(yan)——最終(zhong)檢(jian)(jian)(jian)(jian)驗(yan)(yan)

為保證產品(pin)質量(liang)，我們制定了完善的質量(liang)計劃，現場工作程序及檢驗、試(shi)驗計劃。

一般螺(luo)旋焊(han)(han)管(guan)機(ji)組均采用(yong)在線連續檢驗方式來保證焊(han)(han)縫的(de)的(de)焊(han)(han)接(jie)質(zhi)(zhi)量，這是(shi)螺(luo)旋焊(han)(han)管(guan)生(sheng)產區別(bie)于(yu)直縫焊(han)(han)管(guan)生(sheng)產的(de)另一重要特征。連續檢驗有利(li)于(yu)焊(han)(han)接(jie)缺陷的(de)監(jian)控、焊(han)(han)接(jie)質(zhi)(zhi)量的(de)穩定、焊(han)(han)接(jie)等級的(de)保證。