大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)技術日趨成(cheng)熟(shu)。雙相組織管(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)(de)成(cheng)功(gong)(gong)開(kai)(kai)發提(ti)高了(le)高鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)級(ji)(ji)管(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)的(de)(de)(de)塑性變(bian)(bian)形能(neng)力，降低了(le)應(ying)(ying)(ying)(ying)變(bian)(bian)時效性能(neng)，X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)均已成(cheng)功(gong)(gong)開(kai)(kai)發，通(tong)過了(le)新產(chan)(chan)品鑒(jian)(jian)定(ding)。我(wo)國(guo)西(xi)氣(qi)(qi)東(dong)輸(shu)二(er)(er)線(xian)在(zai)特(te)殊(shu)地段成(cheng)功(gong)(gong)采用(yong)了(le)基于(yu)(yu)應(ying)(ying)(ying)(ying)變(bian)(bian)的(de)(de)(de)設計，并批(pi)量應(ying)(ying)(ying)(ying)用(yong)了(le)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)；在(zai)西(xi)氣(qi)(qi)東(dong)輸(shu)二(er)(er)線(xian)工程開(kai)(kai)始前中(zhong)(zhong)(zhong)石(shi)油(you)集(ji)(ji)團(tuan)公(gong)(gong)司(si)(si)為滿足工程需(xu)要，組織國(guo)內多(duo)個鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠和制管(guan)(guan)(guan)(guan)廠開(kai)(kai)展了(le)《西(xi)氣(qi)(qi)東(dong)輸(shu)二(er)(er)線(xian)工程關鍵技術研(yan)究(jiu)(jiu)(jiu)(jiu)》重(zhong)(zhong)大(da)(da)(da)(da)專(zhuan)項一期(qi)研(yan)究(jiu)(jiu)(jiu)(jiu)，先后(hou)完(wan)成(cheng)了(le)直(zhi)縫、螺(luo)旋和彎管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)件等產(chan)(chan)品研(yan)究(jiu)(jiu)(jiu)(jiu)，并實(shi)(shi)現了(le)全部國(guo)產(chan)(chan)化。但西(xi)氣(qi)(qi)東(dong)輸(shu)二(er)(er)線(xian)基于(yu)(yu)應(ying)(ying)(ying)(ying)變(bian)(bian)設計的(de)(de)(de)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)沒有(you)實(shi)(shi)現國(guo)產(chan)(chan)化，全部采用(yong)的(de)(de)(de)日本進口X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)。為了(le)解決這一難題，在(zai)《西(xi)氣(qi)(qi)東(dong)輸(shu)二(er)(er)線(xian)工程關鍵技術研(yan)究(jiu)(jiu)(jiu)(jiu)》重(zhong)(zhong)大(da)(da)(da)(da)專(zhuan)項二(er)(er)期(qi)研(yan)究(jiu)(jiu)(jiu)(jiu)中(zhong)(zhong)(zhong)，把大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)作(zuo)為研(yan)究(jiu)(jiu)(jiu)(jiu)重(zhong)(zhong)點進一步開(kai)(kai)展研(yan)究(jiu)(jiu)(jiu)(jiu)。經過重(zhong)(zhong)大(da)(da)(da)(da)專(zhuan)項參加的(de)(de)(de)各鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠和制管(guan)(guan)(guan)(guan)廠的(de)(de)(de)通(tong)力合作(zuo)，X70、X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)研(yan)究(jiu)(jiu)(jiu)(jiu)成(cheng)功(gong)(gong)。X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)于(yu)(yu)2011年(nian)9月通(tong)過了(le)中(zhong)(zhong)(zhong)國(guo)石(shi)油(you)天然氣(qi)(qi)集(ji)(ji)團(tuan)公(gong)(gong)司(si)(si)和中(zhong)(zhong)(zhong)國(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)鐵工業協會(hui)在(zai)北京組織的(de)(de)(de)鑒(jian)(jian)定(ding)。X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)成(cheng)功(gong)(gong)應(ying)(ying)(ying)(ying)用(yong)于(yu)(yu)中(zhong)(zhong)(zhong)緬管(guan)(guan)(guan)(guan)道，由(you)渤(bo)海裝備所屬巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)、寶鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)股份有(you)限(xian)公(gong)(gong)司(si)(si)和寶雞鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)所屬中(zhong)(zhong)(zhong)油(you)寶世(shi)(shi)順(shun)（秦皇島(dao)）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)有(you)限(xian)公(gong)(gong)司(si)(si)供應(ying)(ying)(ying)(ying)X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)共(gong)計4萬多(duo)噸，實(shi)(shi)現了(le)全面國(guo)產(chan)(chan)化，填補了(le)中(zhong)(zhong)(zhong)國(guo)X70大(da)(da)(da)(da)變(bian)(bian)形焊管(guan)(guan)(guan)(guan)制造(zao)空白。由(you)鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)供應(ying)(ying)(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)板(ban)，巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)和寶世(shi)(shi)順(shun)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)研(yan)制的(de)(de)(de)X80完(wan)成(cheng)了(le)千噸級(ji)(ji)試生產(chan)(chan)，并于(yu)(yu)2012年(nian)11月通(tong)過了(le)中(zhong)(zhong)(zhong)國(guo)石(shi)油(you)天然氣(qi)(qi)集(ji)(ji)團(tuan)公(gong)(gong)司(si)(si)在(zai)北京組織的(de)(de)(de)鑒(jian)(jian)定(ding)。標志著(zhu)中(zhong)(zhong)(zhong)國(guo)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)具備了(le)批(pi)量生產(chan)(chan)能(neng)力。2012年(nian)，中(zhong)(zhong)(zhong)油(you)寶世(shi)(shi)順(shun)（秦皇島(dao)）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)有(you)限(xian)公(gong)(gong)司(si)(si)和巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)為西(xi)氣(qi)(qi)東(dong)輸(shu)三(san)線(xian)供應(ying)(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)級(ji)(ji)ф1219mm×26.4mm大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)焊管(guan)(guan)(guan)(guan)，填補了(le)中(zhong)(zhong)(zhong)國(guo)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)焊管(guan)(guan)(guan)(guan)制造(zao)空白。

  我國鋼(gang)(gang)管(guan)(guan)(guan)廠家也在(zai)開(kai)(kai)發(fa)高寒地區(qu)K60和K65（X80）用(yong)(yong)管(guan)(guan)(guan)線鋼(gang)(gang)管(guan)(guan)(guan)，并且取(qu)得(de)了(le)重(zhong)大(da)進展。鋼(gang)(gang)管(guan)(guan)(guan)的(de)(de)低(di)溫(wen)(wen)韌性和應變性能(neng)均(jun)比較(jiao)理(li)想(xiang)。正在(zai)進行(xing)進一步(bu)的(de)(de)開(kai)(kai)發(fa)。2006年原華北石油第一機(ji)械廠巨(ju)龍鋼(gang)(gang)管(guan)(guan)(guan)首次開(kai)(kai)發(fa)符合俄(e)羅(luo)斯(si)標準的(de)(de)輸送(song)鋼(gang)(gang)管(guan)(guan)(guan)K60材質直(zhi)(zhi)縫埋弧焊鋼(gang)(gang)管(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年，渤(bo)海裝備所屬(shu)巨(ju)龍鋼(gang)(gang)管(guan)(guan)(guan)公司研制成功了(le)耐低(di)溫(wen)(wen)K60直(zhi)(zhi)縫焊管(guan)(guan)(guan)、彎(wan)管(guan)(guan)(guan)和管(guan)(guan)(guan)件，并為中俄(e)原油管(guan)(guan)(guan)道（二期）供貨(huo)彎(wan)管(guan)(guan)(guan)Φ1220mm×33mm（36根）、φ1220mm×26.4mm（2根）。巨(ju)龍鋼(gang)(gang)管(guan)(guan)(guan)公司研制生產(chan)(chan)的(de)(de)站場(chang)低(di)溫(wen)(wen)環境(jing)(jing)（-45℃）用(yong)(yong)φ1422mm×30.8mm X80直(zhi)(zhi)縫埋弧焊鋼(gang)(gang)管(guan)(guan)(guan)、站場(chang)低(di)溫(wen)(wen)環境(jing)(jing)（-45℃）用(yong)(yong)φ1422mm×33.8mm X80感應加(jia)熱彎(wan)管(guan)(guan)(guan)、站場(chang)低(di)溫(wen)(wen)環境(jing)(jing)（-45℃）用(yong)(yong)φ1422mm×1219×80三通(tong)于2018年11月，在(zai)集團公司進行(xing)鑒(jian)定，目前具備批量(liang)生產(chan)(chan)能(neng)力。該系(xi)列產(chan)(chan)品可實現(xian)-45℃環境(jing)(jing)下的(de)(de)裸露服役(yi)，從(cong)而節省大(da)量(liang)因保(bao)溫(wen)(wen)伴熱措施導致的(de)(de)建(jian)設與維(wei)護費(fei)用(yong)(yong)。該系(xi)列產(chan)(chan)品代表著當前國內(nei)油氣輸送(song)鋼(gang)(gang)管(guan)(guan)(guan)最高水平，填補了(le)國內(nei)空白。

  國(guo)內酸(suan)性(xing)服役環境(jing)用(yong)高(gao)等(deng)(deng)(deng)(deng)級焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)起步晚，但進步很快。耐腐(fu)蝕管(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)(gang)(gang)是輸(shu)送酸(suan)性(xing)天然氣管(guan)(guan)(guan)(guan)(guan)線的(de)(de)(de)(de)重(zhong)要用(yong)鋼(gang)(gang)(gang)(gang)(gang)，是目前(qian)管(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)(gang)(gang)中要求(qiu)最為嚴格(ge)、技術(shu)(shu)水平要求(qiu)最高(gao)的(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)(gang)種，是管(guan)(guan)(guan)(guan)(guan)道用(yong)鋼(gang)(gang)(gang)(gang)(gang)系列(lie)的(de)(de)(de)(de)一個重(zhong)要組成部(bu)(bu)分，是當代冶(ye)金技術(shu)(shu)和(he)裝備水平完美結合的(de)(de)(de)(de)典(dian)(dian)型(xing)產(chan)(chan)(chan)品。國(guo)內焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)企業(ye)和(he)冶(ye)金企業(ye)聯(lian)合攻關，在(zai)冶(ye)煉(lian)純(chun)凈化、連鑄低倍控制(zhi)(zhi)、板(ban)(ban)材(cai)(cai)TMCP控制(zhi)(zhi)及耐酸(suan)焊(han)(han)(han)材(cai)(cai)開(kai)發(fa)(fa)(fa)等(deng)(deng)(deng)(deng)方面取得(de)巨(ju)大(da)成就(jiu)。從(cong)(cong)鋼(gang)(gang)(gang)(gang)(gang)級來(lai)看(kan)，從(cong)(cong)主要供(gong)應集輸(shu)的(de)(de)(de)(de)小(xiao)直(zhi)(zhi)(zhi)徑(jing)X52MS逐漸發(fa)(fa)(fa)展到(dao)大(da)直(zhi)(zhi)(zhi)徑(jing)長距(ju)離外輸(shu)用(yong)X65MS，X70MS也有(you)研發(fa)(fa)(fa)業(ye)績；從(cong)(cong)管(guan)(guan)(guan)(guan)(guan)型(xing)來(lai)看(kan)，從(cong)(cong)小(xiao)口(kou)徑(jing)無縫(feng)、HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)發(fa)(fa)(fa)展到(dao)大(da)口(kou)徑(jing)埋(mai)弧(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)；從(cong)(cong)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)采用(yong)的(de)(de)(de)(de)原材(cai)(cai)料看(kan)，不僅有(you)螺旋管(guan)(guan)(guan)(guan)(guan)和(he)HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)需要的(de)(de)(de)(de)熱軋卷板(ban)(ban)，也有(you)滿(man)足大(da)口(kou)徑(jing)直(zhi)(zhi)(zhi)縫(feng)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)寬厚板(ban)(ban)；從(cong)(cong)供(gong)應市場來(lai)看(kan)，不僅滿(man)足國(guo)內中石油、中石化、中海油等(deng)(deng)(deng)(deng)需求(qiu)發(fa)(fa)(fa)展，高(gao)等(deng)(deng)(deng)(deng)級酸(suan)性(xing)環境(jing)用(yong)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)還批量(liang)出口(kou)到(dao)中東、中亞和(he)北(bei)美等(deng)(deng)(deng)(deng)國(guo)家和(he)地區；典(dian)(dian)型(xing)管(guan)(guan)(guan)(guan)(guan)廠有(you)寶鋼(gang)(gang)(gang)(gang)(gang)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)部(bu)(bu)、渤海裝備、寶雞鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、珠江(jiang)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)(deng)(deng)企業(ye)，典(dian)(dian)型(xing)工(gong)程(cheng)(cheng)如2004年(nian)全部(bu)(bu)采用(yong)國(guo)產(chan)(chan)(chan)X65MS直(zhi)(zhi)(zhi)縫(feng)埋(mai)弧(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)忠-武輸(shu)氣管(guan)(guan)(guan)(guan)(guan)線工(gong)程(cheng)(cheng)，2015年(nian)寶鋼(gang)(gang)(gang)(gang)(gang)獨家供(gong)應2.68萬噸(dun)(dun)X65MS直(zhi)(zhi)(zhi)縫(feng)埋(mai)弧(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de) BP KHAZZAN 1期(qi)項(xiang)目等(deng)(deng)(deng)(deng)。寶鋼(gang)(gang)(gang)(gang)(gang)股份有(you)限公司(si)截(jie)至目前(qian)耐酸(suan)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)共計(ji)生(sheng)產(chan)(chan)(chan)55萬噸(dun)(dun)，其中埋(mai)弧(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)約50萬噸(dun)(dun)，HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)約5萬噸(dun)(dun)；珠江(jiang)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)生(sheng)產(chan)(chan)(chan)的(de)(de)(de)(de)耐酸(suan)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)累計(ji)超(chao)過了10萬噸(dun)(dun)；巨(ju)龍鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公司(si)為土庫曼、長慶油田等(deng)(deng)(deng)(deng)供(gong)貨共計(ji)3.4萬噸(dun)(dun)。