大口(kou)徑(jing)(jing)(jing)焊(han)(han)管(guan)(guan)(guan)一般采用的(de)(de)(de)(de)(de)是雙面(mian)埋弧焊(han)(han)焊(han)(han)接工(gong)(gong)藝，根(gen)據其焊(han)(han)縫(feng)(feng)(feng)的(de)(de)(de)(de)(de)不(bu)同(tong)(tong)可(ke)(ke)以分為(wei)大口(kou)徑(jing)(jing)(jing)直(zhi)縫(feng)(feng)(feng)焊(han)(han)管(guan)(guan)(guan)和(he)大口(kou)徑(jing)(jing)(jing)螺(luo)旋焊(han)(han)管(guan)(guan)(guan)，其中直(zhi)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)根(gen)據成型方式的(de)(de)(de)(de)(de)不(bu)同(tong)(tong)可(ke)(ke)以分為(wei)又分為(wei)UOE、RBE、JCOE鋼管(guan)(guan)(guan)等。大口(kou)徑(jing)(jing)(jing)直(zhi)縫(feng)(feng)(feng)焊(han)(han)管(guan)(guan)(guan)生(sheng)產(chan)(chan)工(gong)(gong)藝簡(jian)單，生(sheng)產(chan)(chan)效率高(gao)，成本低(di)，而(er)大口(kou)徑(jing)(jing)(jing)螺(luo)旋焊(han)(han)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)強(qiang)度一般比直(zhi)縫(feng)(feng)(feng)焊(han)(han)管(guan)(guan)(guan)高(gao)，能用較(jiao)窄的(de)(de)(de)(de)(de)坯料生(sheng)產(chan)(chan)管(guan)(guan)(guan)徑(jing)(jing)(jing)較(jiao)大的(de)(de)(de)(de)(de)焊(han)(han)管(guan)(guan)(guan)，還可(ke)(ke)以用同(tong)(tong)樣寬度的(de)(de)(de)(de)(de)坯料生(sheng)產(chan)(chan)管(guan)(guan)(guan)徑(jing)(jing)(jing)不(bu)同(tong)(tong)的(de)(de)(de)(de)(de)焊(han)(han)管(guan)(guan)(guan)，架子管(guan)(guan)(guan)，但(dan)是生(sheng)產(chan)(chan)效率相比與之縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)來(lai)說比較(jiao)的(de)(de)(de)(de)(de)低(di)。大口(kou)徑(jing)(jing)(jing)焊(han)(han)管(guan)(guan)(guan)主要應用于大型管(guan)(guan)(guan)道工(gong)(gong)程(cheng)、輸(shu)水(shui)輸(shu)氣工(gong)(gong)程(cheng)、城市管(guan)(guan)(guan)網建設，市政工(gong)(gong)程(cheng)，給水(shui)排水(shui)工(gong)(gong)程(cheng)，大型建筑鋼結構(gou)，樁基礎等方面(mian)。大口(kou)徑(jing)(jing)(jing)焊(han)(han)管(guan)(guan)(guan)的(de)(de)(de)(de)(de)主要檢測(ce)方法(fa)以探傷檢測(ce)為(wei)主。采用機焊(han)(han)和(he)人工(gong)(gong)焊(han)(han)相結合的(de)(de)(de)(de)(de)方法(fa)。
