在我國的(de)(de)鋼(gang)(gang)(gang)管(guan)制造標準中(zhong)，有(you)結(jie)構(gou)用(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)和(he)流(liu)體輸(shu)送(song)(song)用(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)之分。結(jie)構(gou)用(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)主(zhu)要(yao)用(yong)(yong)(yong)于一般金屬(shu)結(jie)構(gou)如橋(qiao)、梁、鋼(gang)(gang)(gang)構(gou)架等，它(ta)只要(yao)求(qiu)保(bao)證(zheng)強度與剛(gang)度，而(er)對(dui)鋼(gang)(gang)(gang)管(guan)的(de)(de)嚴密性(xing)不(bu)作要(yao)求(qiu)。流(liu)體輸(shu)送(song)(song)用(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)：主(zhu)要(yao)用(yong)(yong)(yong)于帶有(you)壓力(li)的(de)(de)流(liu)體輸(shu)送(song)(song)，它(ta)除了要(yao)保(bao)證(zheng)有(you)符合相應要(yao)求(qiu)的(de)(de)強度與剛(gang)度外，還要(yao)求(qiu)保(bao)證(zheng)密閉性(xing)，即在出廠前要(yao)求(qiu)逐根進行水壓試(shi)驗。對(dui)壓力(li)管(guan)道來說(shuo)，它(ta)輸(shu)送(song)(song)的(de)(de)介質常(chang)常(chang)是易(yi)(yi)燃、易(yi)(yi)爆、有(you)毒、有(you)溫度、有(you)壓力(li)的(de)(de)介質，故應選用(yong)(yong)(yong)流(liu)體輸(shu)送(song)(song)用(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)。在實際的(de)(de)工(gong)程設計、采購和(he)施工(gong)中(zhong)，發現有(you)用(yong)(yong)(yong)結(jie)構(gou)用(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)代替(ti)流(liu)體輸(shu)送(song)(song)用(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)的(de)(de)現象，這是絕對(dui)禁止的(de)(de)。

  結構用無縫鋼管GB/T 8162主要用于一般結構和機械結構。其代表材質（牌號）：碳素鋼20、45號鋼；合金鋼Q345、20Cr、40Cr、20CrMo、30-35CrMo、42CrMo等。結構用不(bu)銹鋼無縫管 GB/T 14975-2012 是遍及用于化工、石油、輕紡、醫療、食品、機械等工業的耐侵蝕管道和結構件及零件的不銹鋼制成的熱軋（擠、擴）和冷拔（軋）無縫管。