無縫管(guan)(guan)的外徑范圍為 0.1～1425mm，壁厚(hou)為0.01～200mm。除圓形管(guan)(guan)外，還有各(ge)種(zhong)異形斷面(mian)管(guan)(guan)和(he)交斷面(mian)管(guan)(guan)。它就越具有經濟性和(he)實(shi)用性，壁厚(hou)越薄，無縫管(guan)(guan)廠商，它的加(jia)工成本就會(hui)大幅度(du)的上升；其次、該產品的工藝(yi)決定(ding)它的局限(xian)性能(neng)，一般無縫鋼管(guan)(guan)精(jing)度(du)低(di)：冷(leng)軋(ya)（拔(ba)）無縫鋼管(guan)(guan)主(zhu)要生產工序坯料準(zhun)備(bei)→酸(suan)洗潤滑→冷(leng)軋(ya)（拔(ba)）→熱處(chu)理→矯直→精(jing)整→檢(jian)驗；

異(yi)型(xing)無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)廣泛(fan)用于各種結構件、工具和機械零(ling)部件。按(an)不(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)金相組(zu)織不(bu)(bu)(bu)同(tong)分半鐵(tie)(tie)素體(ti)半馬(ma)(ma)氏體(ti)系(xi)不(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、馬(ma)(ma)氏體(ti)不(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、奧(ao)氏體(ti)系(xi)不(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、奧(ao)氏體(ti)-鐵(tie)(tie)素鐵(tie)(tie)系(xi)不(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)等。異(yi)型(xing)無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)是(shi)除了圓(yuan)管(guan)(guan)(guan)(guan)(guan)以外的其他截(jie)面形狀的無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)的總稱。按(an)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)截(jie)面形狀尺(chi)寸的不(bu)(bu)(bu)同(tong)又(you)可分為(wei)(wei)等壁厚異(yi)型(xing)無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)（代號(hao)(hao)為(wei)(wei)D）、不(bu)(bu)(bu)等壁厚異(yi)型(xing)無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)（代號(hao)(hao)為(wei)(wei)BD）、變直徑異(yi)型(xing)無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)（代號(hao)(hao)為(wei)(wei)BJ）。

無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)以(yi)其優異的(de)(de)產品性(xing)能一(yi)直在管(guan)(guan)(guan)(guan)(guan)材(cai)領域(yu)有著特殊的(de)(de)地(di)位，無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)制造(zao)廠家(jia)，以(yi)其復(fu)雜(za)的(de)(de)軋制工藝、高(gao)昂(ang)的(de)(de)軋制成本和(he)坯料成本，價格通常(chang)遠遠高(gao)于(yu)(yu)(yu)其他管(guan)(guan)(guan)(guan)(guan)材(cai)品種(zhong)，以(yi)至于(yu)(yu)(yu)市場充斥著試圖替代無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)的(de)(de)“假無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)”的(de)(de)焊管(guan)(guan)(guan)(guan)(guan)。使用合金(jin)無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)作(zuo)為管(guan)(guan)(guan)(guan)(guan)道(dao)，有的(de)(de)耐高(gao)壓(ya)性(xing)能，安徽無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)，能夠(gou)承(cheng)受較大的(de)(de)壓(ya)力，在這種(zhong)壓(ya)力之下，合金(jin)無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)道(dao)也不易(yi)發生，使用起來也更加的(de)(de)安全放(fang)心，也降低了管(guan)(guan)(guan)(guan)(guan)材(cai)的(de)(de)損耗，減輕了管(guan)(guan)(guan)(guan)(guan)道(dao)的(de)(de)維護工作(zuo)；按(an)GB14975-94《不銹鋼(gang)無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)(guan)》規定(ding)，鋼(gang)管(guan)(guan)(guan)(guan)(guan)通常(chang)長度(du)(不定(ding)尺(chi))熱軋鋼(gang)管(guan)(guan)(guan)(guan)(guan)1.5～10m，精密無(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)廠家(jia)，熱擠(ji)壓(ya)鋼(gang)管(guan)(guan)(guan)(guan)(guan)等于(yu)(yu)(yu)和(he)大于(yu)(yu)(yu)1m。冷拔(ba)(軋)鋼(gang)管(guan)(guan)(guan)(guan)(guan)壁厚0.5～1.0mm者，1.0～7m；壁厚大于(yu)(yu)(yu)1.0mm者，1.5～8m。