在我國的(de)鋼(gang)(gang)管(guan)(guan)制造標(biao)準(zhun)中，有(you)(you)(you)結(jie)(jie)構(gou)用(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)和流體(ti)(ti)輸(shu)送用(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)之(zhi)分。結(jie)(jie)構(gou)用(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)主(zhu)要用(yong)(yong)(yong)(yong)于一(yi)般金屬結(jie)(jie)構(gou)如橋(qiao)、梁(liang)、鋼(gang)(gang)構(gou)架等(deng)，它只要求(qiu)(qiu)保證強度(du)與剛度(du)，而(er)對鋼(gang)(gang)管(guan)(guan)的(de)嚴密性不作(zuo)要求(qiu)(qiu)。流體(ti)(ti)輸(shu)送用(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)：主(zhu)要用(yong)(yong)(yong)(yong)于帶有(you)(you)(you)壓(ya)力(li)的(de)流體(ti)(ti)輸(shu)送，它除了要保證有(you)(you)(you)符合相(xiang)應要求(qiu)(qiu)的(de)強度(du)與剛度(du)外，還要求(qiu)(qiu)保證密閉性，即在出(chu)廠前要求(qiu)(qiu)逐根進行水壓(ya)試驗。對壓(ya)力(li)管(guan)(guan)道來(lai)說，它輸(shu)送的(de)介質常(chang)常(chang)是易燃、易爆、有(you)(you)(you)毒(du)、有(you)(you)(you)溫度(du)、有(you)(you)(you)壓(ya)力(li)的(de)介質，故應選(xuan)用(yong)(yong)(yong)(yong)流體(ti)(ti)輸(shu)送用(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)。在實際的(de)工程設計、采購和施(shi)工中，發現(xian)有(you)(you)(you)用(yong)(yong)(yong)(yong)結(jie)(jie)構(gou)用(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)代替流體(ti)(ti)輸(shu)送用(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)的(de)現(xian)象(xiang)，這是絕對禁(jin)止的(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。