在(zai)我國的鋼(gang)(gang)(gang)管(guan)(guan)(guan)制造標準中，有結構(gou)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)和(he)流(liu)體輸(shu)(shu)送(song)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)之分。結構(gou)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)主(zhu)要(yao)(yao)(yao)(yao)(yao)用(yong)(yong)(yong)(yong)(yong)于一般(ban)金屬結構(gou)如橋、梁、鋼(gang)(gang)(gang)構(gou)架(jia)等(deng)，它(ta)(ta)只要(yao)(yao)(yao)(yao)(yao)求(qiu)(qiu)(qiu)保證(zheng)強度(du)與剛度(du)，而對鋼(gang)(gang)(gang)管(guan)(guan)(guan)的嚴密性(xing)不作(zuo)要(yao)(yao)(yao)(yao)(yao)求(qiu)(qiu)(qiu)。流(liu)體輸(shu)(shu)送(song)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)：主(zhu)要(yao)(yao)(yao)(yao)(yao)用(yong)(yong)(yong)(yong)(yong)于帶有壓(ya)(ya)力的流(liu)體輸(shu)(shu)送(song)，它(ta)(ta)除了要(yao)(yao)(yao)(yao)(yao)保證(zheng)有符合相應要(yao)(yao)(yao)(yao)(yao)求(qiu)(qiu)(qiu)的強度(du)與剛度(du)外，還要(yao)(yao)(yao)(yao)(yao)求(qiu)(qiu)(qiu)保證(zheng)密閉性(xing)，即在(zai)出(chu)廠前(qian)要(yao)(yao)(yao)(yao)(yao)求(qiu)(qiu)(qiu)逐(zhu)根進(jin)行水壓(ya)(ya)試驗。對壓(ya)(ya)力管(guan)(guan)(guan)道(dao)來說，它(ta)(ta)輸(shu)(shu)送(song)的介(jie)質常(chang)(chang)常(chang)(chang)是(shi)易燃、易爆、有毒、有溫度(du)、有壓(ya)(ya)力的介(jie)質，故應選用(yong)(yong)(yong)(yong)(yong)流(liu)體輸(shu)(shu)送(song)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)。在(zai)實際的工程(cheng)設計、采購和(he)施工中，發現有用(yong)(yong)(yong)(yong)(yong)結構(gou)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)代替流(liu)體輸(shu)(shu)送(song)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)的現象，這是(shi)絕(jue)對禁止的。

  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(guan) 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。