在(zai)(zai)我國的(de)鋼管(guan)(guan)(guan)(guan)制造標準中(zhong)，有(you)結(jie)(jie)構(gou)用(yong)(yong)(yong)鋼管(guan)(guan)(guan)(guan)和(he)流(liu)(liu)體(ti)(ti)輸送(song)用(yong)(yong)(yong)鋼管(guan)(guan)(guan)(guan)之分。結(jie)(jie)構(gou)用(yong)(yong)(yong)鋼管(guan)(guan)(guan)(guan)主要(yao)(yao)用(yong)(yong)(yong)于一般(ban)金屬結(jie)(jie)構(gou)如橋、梁、鋼構(gou)架等，它(ta)只要(yao)(yao)求(qiu)(qiu)保證強(qiang)(qiang)度(du)與(yu)剛度(du)，而對(dui)鋼管(guan)(guan)(guan)(guan)的(de)嚴密(mi)性(xing)不作要(yao)(yao)求(qiu)(qiu)。流(liu)(liu)體(ti)(ti)輸送(song)用(yong)(yong)(yong)鋼管(guan)(guan)(guan)(guan)：主要(yao)(yao)用(yong)(yong)(yong)于帶有(you)壓(ya)力(li)的(de)流(liu)(liu)體(ti)(ti)輸送(song)，它(ta)除了要(yao)(yao)保證有(you)符合相應要(yao)(yao)求(qiu)(qiu)的(de)強(qiang)(qiang)度(du)與(yu)剛度(du)外，還要(yao)(yao)求(qiu)(qiu)保證密(mi)閉性(xing)，即在(zai)(zai)出廠前要(yao)(yao)求(qiu)(qiu)逐根(gen)進行水壓(ya)試驗(yan)。對(dui)壓(ya)力(li)管(guan)(guan)(guan)(guan)道(dao)來說，它(ta)輸送(song)的(de)介質常(chang)常(chang)是(shi)易(yi)燃、易(yi)爆(bao)、有(you)毒、有(you)溫度(du)、有(you)壓(ya)力(li)的(de)介質，故應選(xuan)用(yong)(yong)(yong)流(liu)(liu)體(ti)(ti)輸送(song)用(yong)(yong)(yong)鋼管(guan)(guan)(guan)(guan)。在(zai)(zai)實際的(de)工程設計、采購和(he)施工中(zhong)，發現(xian)有(you)用(yong)(yong)(yong)結(jie)(jie)構(gou)用(yong)(yong)(yong)鋼管(guan)(guan)(guan)(guan)代(dai)替流(liu)(liu)體(ti)(ti)輸送(song)用(yong)(yong)(yong)鋼管(guan)(guan)(guan)(guan)的(de)現(xian)象(xiang)，這是(shi)絕對(dui)禁止的(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(bu)銹鋼無(wu)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。