我國早期的管道建設主要采用的是不(bu)銹鋼無(wu)縫管，但口徑受到了限制。隨著焊管生產技術的發展和焊管質量的提高以及不銹(xiu)鋼焊(han)管的直徑可以做得更大，焊管很快就替代了不銹鋼無縫管，成為管道建設的主角。隨著管道建設向大型化、高輸送量發展，中大口徑的管道基本采用了焊管，90年代以來，我國油氣管道的主干線全部被焊管所壟斷，不銹鋼無縫管主要用于支線管、集輸管線、海底管線和城市的管網。

  70-80年代(dai)成都無(wu)縫、包鋼(gang)(gang)等企業按《一(yi)般無(wu)縫鋼(gang)(gang)管(guan)(guan)》（YB 231-1970）和后(hou)來的《輸(shu)送(song)(song)流體(ti)用(yong)無(wu)縫鋼(gang)(gang)管(guan)(guan)》（GB／T 8163-1987）標準，生產流體(ti)輸(shu)送(song)(song)用(yong)管(guan)(guan)，主(zhu)要牌號：A3（A3F）、10、20、16Mn、Q235、Q295、Q345等，主(zhu)要管(guan)(guan)徑(jing)：Φ159mm、ф219mm、φ273mm、Φ325mm、φ426mm、最大管(guan)(guan)徑(jing)為Φ630mm。

  從80年代開(kai)始，我(wo)國(guo)(guo)開(kai)展了(le)(le)(le)按(an)API標(biao)準(zhun)開(kai)發(fa)(fa)研(yan)(yan)制專用不銹鋼(gang)(gang)(gang)(gang)(gang)無縫(feng)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)，為(wei)(wei)了(le)(le)(le)適(shi)(shi)應這一發(fa)(fa)展的(de)需要，成都無縫(feng)廠從80年代末開(kai)始了(le)(le)(le)按(an)照API5L標(biao)準(zhun)，開(kai)發(fa)(fa)研(yan)(yan)制生(sheng)產(chan)(chan)A、B、X42～X52鋼(gang)(gang)(gang)(gang)(gang)級(ji)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)。于1991年獲得(de)了(le)(le)(le)API 5L會標(biao)許(xu)可證(zheng)，并于當年向(xiang)泰國(guo)(guo)出口管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)；1992年向(xiang)臺灣地區出口Φ245mm的(de)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)。90年代中(zhong)后期(qi)又(you)研(yan)(yan)制出了(le)(le)(le)X56、X60、X65鋼(gang)(gang)(gang)(gang)(gang)級(ji)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)，并為(wei)(wei)勝(sheng)利(li)油田(tian)批量供應X56級(ji)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)；向(xiang)伊拉克出口幾萬噸(dun)(dun)X60級(ji)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)。天津鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公司(si)250連(lian)軋管(guan)(guan)(guan)(guan)(guan)(guan)機組投產(chan)(chan)后不久就開(kai)始了(le)(le)(le)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)研(yan)(yan)制，1997年為(wei)(wei)渤海油田(tian)開(kai)發(fa)(fa)研(yan)(yan)制出X56級(ji)φ219.1×12.7mm海底(di)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)；1998年為(wei)(wei)勝(sheng)利(li)油田(tian)開(kai)發(fa)(fa)生(sheng)產(chan)(chan)X56鋼(gang)(gang)(gang)(gang)(gang)級(ji)ф114.3mm×10mm、ф273.1mm×12.7mm海底(di)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)；1999-2000年為(wei)(wei)沙(sha)特阿美公司(si)開(kai)發(fa)(fa)生(sheng)產(chan)(chan)出了(le)(le)(le)4萬噸(dun)(dun)X60鋼(gang)(gang)(gang)(gang)(gang)級(ji)ф168.3mmx12.7mm、φ219.1mmx12.7mm、φ273.1mmx12.7mm等多個規(gui)格(ge)的(de)海底(di)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)；2000年后又(you)開(kai)發(fa)(fa)出X65Q、X70Q、X80Q級(ji)高(gao)強度管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)，適(shi)(shi)合海洋環(huan)境和(he)抗腐(fu)蝕環(huan)境的(de)X60QS、X65QS鋼(gang)(gang)(gang)(gang)(gang)級(ji)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)，適(shi)(shi)合低溫環(huan)境的(de)X60L、X65L管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)管(guan)(guan)(guan)(guan)(guan)(guan)。

  2005年(nian)以(yi)后隨著(zhu)國(guo)內(nei)幾條中(zhong)大口(kou)(kou)(kou)(kou)徑的(de)(de)(de)連軋(ya)管(guan)(guan)(guan)(guan)(guan)機(ji)組(zu)(zu)的(de)(de)(de)建立，如(ru)衡陽鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、攀成(cheng)(cheng)鋼(gang)(gang)(gang)(gang)的(de)(de)(de)Φ340mm機(ji)組(zu)(zu)，天(tian)津鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、寶鋼(gang)(gang)(gang)(gang)、包鋼(gang)(gang)(gang)(gang)的(de)(de)(de)ф460mm機(ji)組(zu)(zu)，天(tian)淮的(de)(de)(de)φ508mm機(ji)組(zu)(zu)，以(yi)及天(tian)津鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)Φ720mm斜軋(ya)擴管(guan)(guan)(guan)(guan)(guan)機(ji)組(zu)(zu)，衡陽鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)φ720mm周期式軋(ya)管(guan)(guan)(guan)(guan)(guan)機(ji)組(zu)(zu)，使無(wu)(wu)(wu)縫管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)直(zhi)徑擴大到Φ711mm，其中(zhong)包括(kuo)ф323.9mm、ф406mm、Φ457mm、φ508mm、φ610mm等(deng)(deng)。2007年(nian)塔里(li)木(mu)油田(tian)(tian)迪那(nei)氣(qi)田(tian)(tian)，使用(yong)了天(tian)津鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)生產的(de)(de)(de)當(dang)時最大口(kou)(kou)(kou)(kou)徑的(de)(de)(de)ф457mmx17.5mm、X60Q鋼(gang)(gang)(gang)(gang)級(ji)不(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)無(wu)(wu)(wu)縫管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)，2008年(nian)中(zhong)海油潿洲(zhou)(zhou)(zhou)項目使用(yong)了適(shi)合海洋環境和(he)抗腐蝕環境X60QS及X65QS鋼(gang)(gang)(gang)(gang)級(ji)Φ406.4mm的(de)(de)(de)無(wu)(wu)(wu)縫管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)產品(pin)。另外(wai)(wai)，天(tian)津鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公司2010年(nian)在國(guo)內(nei)首次開(kai)發(fa)了適(shi)合深水(shui)作(zuo)業的(de)(de)(de)盤管(guan)(guan)(guan)(guan)(guan)用(yong)無(wu)(wu)(wu)縫管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)，且產品(pin)成(cheng)(cheng)功出口(kou)(kou)(kou)(kou)到歐洲(zhou)(zhou)(zhou)。無(wu)(wu)(wu)縫管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)開(kai)發(fa)極(ji)大地(di)(di)滿足國(guo)內(nei)陸(lu)地(di)(di)、海洋油氣(qi)田(tian)(tian)的(de)(de)(de)開(kai)發(fa)和(he)建設，并大量出口(kou)(kou)(kou)(kou)到中(zhong)東、東南亞、非(fei)洲(zhou)(zhou)(zhou)、美洲(zhou)(zhou)(zhou)、歐洲(zhou)(zhou)(zhou)等(deng)(deng)地(di)(di)。近(jin)10年(nian)來，我國(guo)無(wu)(wu)(wu)縫管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)生產企(qi)業天(tian)津鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、衡陽鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、寶鋼(gang)(gang)(gang)(gang)、攀成(cheng)(cheng)鋼(gang)(gang)(gang)(gang)、包鋼(gang)(gang)(gang)(gang)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)，每年(nian)都生產大量的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)出口(kou)(kou)(kou)(kou)到國(guo)外(wai)(wai)，出口(kou)(kou)(kou)(kou)量在150～227萬噸之間，占(zhan)不(bu)銹(xiu)鋼(gang)(gang)(gang)(gang)無(wu)(wu)(wu)縫管(guan)(guan)(guan)(guan)(guan)出口(kou)(kou)(kou)(kou)量的(de)(de)(de)42％～49.5％，鋼(gang)(gang)(gang)(gang)級(ji)從(cong)B級(ji)到X級(ji)（X42-X70及少量的(de)(de)(de)X80），品(pin)種包括(kuo)海底管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)、抗硫管(guan)(guan)(guan)(guan)(guan)線(xian)(xian)管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)，見圖8-7和(he)圖8-8。