按(an)焊(han)(han)(han)(han)接方法不(bu)(bu)同可(ke)分(fen)為(wei)電(dian)弧焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、高頻(pin)(pin)或低頻(pin)(pin)電(dian)阻(zu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、氣(qi)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、爐(lu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、邦(bang)迪管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)(deng)。按(an)焊(han)(han)(han)(han)縫(feng)(feng)形狀可(ke)分(fen)為(wei)直(zhi)(zhi)縫(feng)(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)和螺(luo)旋(xuan)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。電(dian)焊(han)(han)(han)(han)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)用(yong)于(yu)石油鉆(zhan)采和機械(xie)制(zhi)造(zao)業(ye)等(deng)(deng)(deng)。螺(luo)旋(xuan)焊(han)(han)(han)(han)接鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)是指(zhi)用(yong)鋼(gang)(gang)(gang)(gang)(gang)帶或鋼(gang)(gang)(gang)(gang)(gang)板彎曲變形為(wei)圓形、方形等(deng)(deng)(deng)形狀后(hou)再焊(han)(han)(han)(han)接成(cheng)的(de)(de)、表面有(you)接縫(feng)(feng)的(de)(de)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。按(an)焊(han)(han)(han)(han)接方法不(bu)(bu)同可(ke)分(fen)為(wei)電(dian)弧焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、高頻(pin)(pin)或低頻(pin)(pin)電(dian)阻(zu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、氣(qi)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、爐(lu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)、邦(bang)迪管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)(deng)。按(an)焊(han)(han)(han)(han)縫(feng)(feng)形狀可(ke)分(fen)為(wei)直(zhi)(zhi)縫(feng)(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)和螺(luo)旋(xuan)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)。電(dian)焊(han)(han)(han)(han)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)用(yong)于(yu)石油鉆(zhan)采和機械(xie)制(zhi)造(zao)業(ye)等(deng)(deng)(deng)。爐(lu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)可(ke)用(yong)作水煤氣(qi)管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)(deng)，大口徑直(zhi)(zhi)縫(feng)(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)用(yong)于(yu)高壓油氣(qi)輸(shu)(shu)送等(deng)(deng)(deng);螺(luo)旋(xuan)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)用(yong)于(yu)油氣(qi)輸(shu)(shu)送、管(guan)(guan)(guan)(guan)(guan)樁、橋墩(dun)等(deng)(deng)(deng)。

焊(han)(han)接鋼(gang)(gang)管(guan)(guan)(guan)比無縫鋼(gang)(gang)管(guan)(guan)(guan)成本(ben)低(di)、生(sheng)產效(xiao)率高(gao)(gao)。直(zhi)縫焊(han)(han)管(guan)(guan)(guan)生(sheng)產工藝簡單，生(sheng)產效(xiao)率高(gao)(gao)，成本(ben)低(di)，發展較(jiao)(jiao)快。螺旋焊(han)(han)管(guan)(guan)(guan)的強(qiang)度(du)一般(ban)比直(zhi)縫焊(han)(han)管(guan)(guan)(guan)高(gao)(gao)，能用較(jiao)(jiao)窄(zhai)的坯料(liao)生(sheng)產管(guan)(guan)(guan)徑較(jiao)(jiao)大(da)的焊(han)(han)管(guan)(guan)(guan)，還可以用同(tong)樣寬度(du)的坯料(liao)生(sheng)產管(guan)(guan)(guan)徑不同(tong)的焊(han)(han)管(guan)(guan)(guan)。但是與相同(tong)長度(du)的直(zhi)縫管(guan)(guan)(guan)相比，焊(han)(han)縫長度(du)增加30-100，而且生(sheng)產速度(du)較(jiao)(jiao)低(di)。

因(yin)此，較(jiao)小口徑(jing)的(de)焊管(guan)(guan)大(da)都采用直縫焊，大(da)口徑(jing)焊管(guan)(guan)則大(da)多采用螺(luo)旋焊螺(luo)旋縫埋弧(hu)焊鋼(gang)管(guan)(guan)將熱軋(ya)帶鋼(gang)按(an)螺(luo)旋形彎曲成(cheng)形，用埋弧(hu)自動焊進行(xing)內縫和(he)外縫的(de)焊接制成(cheng)螺(luo)旋縫鋼(gang)管(guan)(guan)(也稱螺(luo)旋焊管(guan)(guan)、螺(luo)旋管(guan)(guan))。螺(luo)旋鋼(gang)管(guan)(guan)由(you)于(yu)以下原因(yin)它(ta)能(neng)廣(guang)泛地應用于(yu)大(da)直徑(jing)鋼(gang)管(guan)(guan)的(de)生產中：

1）只(zhi)要改變成形角度(du)，就可以用同一寬度(du)的帶鋼生產各種口徑的鋼管;

2）因為是(shi)連(lian)續彎曲(qu)成形，所以鋼管(guan)的定尺(chi)長度不受限制;

3）焊縫(feng)螺旋形均(jun)勻分布在整個鋼管圓(yuan)周上，所(suo)以(yi)鋼管的尺寸精度高，強度也較高;

4）易于變更尺(chi)寸(cun)，適合(he)于小批(pi)量、多品種鋼管的生產。