在我國(guo)的鋼(gang)(gang)管(guan)(guan)(guan)(guan)制造標準中，有(you)(you)結構(gou)(gou)用(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)和流(liu)體(ti)(ti)輸(shu)送(song)用(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)之分。結構(gou)(gou)用(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)主(zhu)要(yao)用(yong)(yong)(yong)于一般(ban)金屬結構(gou)(gou)如橋、梁(liang)、鋼(gang)(gang)構(gou)(gou)架(jia)等(deng)，它(ta)只要(yao)求(qiu)保證(zheng)強度(du)與剛(gang)度(du)，而對鋼(gang)(gang)管(guan)(guan)(guan)(guan)的嚴(yan)密(mi)性(xing)不作要(yao)求(qiu)。流(liu)體(ti)(ti)輸(shu)送(song)用(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)：主(zhu)要(yao)用(yong)(yong)(yong)于帶有(you)(you)壓(ya)力的流(liu)體(ti)(ti)輸(shu)送(song)，它(ta)除了要(yao)保證(zheng)有(you)(you)符合相應要(yao)求(qiu)的強度(du)與剛(gang)度(du)外(wai)，還要(yao)求(qiu)保證(zheng)密(mi)閉性(xing)，即在出廠前(qian)要(yao)求(qiu)逐根(gen)進(jin)行水(shui)壓(ya)試驗。對壓(ya)力管(guan)(guan)(guan)(guan)道來說，它(ta)輸(shu)送(song)的介質常(chang)常(chang)是易燃、易爆、有(you)(you)毒、有(you)(you)溫度(du)、有(you)(you)壓(ya)力的介質，故應選用(yong)(yong)(yong)流(liu)體(ti)(ti)輸(shu)送(song)用(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)。在實(shi)際的工(gong)程設計、采購和施工(gong)中，發現有(you)(you)用(yong)(yong)(yong)結構(gou)(gou)用(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)代替流(liu)體(ti)(ti)輸(shu)送(song)用(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)的現象，這是絕對禁(jin)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(feng)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。