大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)技(ji)術日趨成熟。雙(shuang)相組織(zhi)管(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)的(de)(de)(de)成功(gong)(gong)開發提高(gao)(gao)了(le)(le)(le)(le)高(gao)(gao)鋼(gang)(gang)(gang)級(ji)管(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)的(de)(de)(de)塑性(xing)變(bian)(bian)(bian)形能(neng)(neng)力，降低(di)了(le)(le)(le)(le)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)時效性(xing)能(neng)(neng)，X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)均已成功(gong)(gong)開發，通(tong)過(guo)(guo)了(le)(le)(le)(le)新(xin)產品(pin)鑒定。我國(guo)(guo)(guo)西(xi)氣(qi)(qi)(qi)東(dong)(dong)(dong)輸(shu)二(er)(er)(er)線(xian)在(zai)(zai)特殊地段(duan)成功(gong)(gong)采(cai)用了(le)(le)(le)(le)基于(yu)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)的(de)(de)(de)設計，并批(pi)量(liang)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)用了(le)(le)(le)(le)X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)；在(zai)(zai)西(xi)氣(qi)(qi)(qi)東(dong)(dong)(dong)輸(shu)二(er)(er)(er)線(xian)工(gong)程(cheng)開始前中(zhong)(zhong)(zhong)石(shi)油(you)集團公(gong)(gong)(gong)(gong)司(si)(si)為(wei)滿足工(gong)程(cheng)需要，組織(zhi)國(guo)(guo)(guo)內多(duo)個鋼(gang)(gang)(gang)廠(chang)和(he)(he)(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)廠(chang)開展了(le)(le)(le)(le)《西(xi)氣(qi)(qi)(qi)東(dong)(dong)(dong)輸(shu)二(er)(er)(er)線(xian)工(gong)程(cheng)關鍵技(ji)術研(yan)究(jiu)(jiu)》重大(da)(da)(da)(da)(da)(da)專(zhuan)(zhuan)項一期研(yan)究(jiu)(jiu)，先后完成了(le)(le)(le)(le)直縫、螺旋和(he)(he)(he)彎管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)件等產品(pin)研(yan)究(jiu)(jiu)，并實現(xian)(xian)(xian)了(le)(le)(le)(le)全(quan)部國(guo)(guo)(guo)產化。但西(xi)氣(qi)(qi)(qi)東(dong)(dong)(dong)輸(shu)二(er)(er)(er)線(xian)基于(yu)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)設計的(de)(de)(de)X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)沒有(you)實現(xian)(xian)(xian)國(guo)(guo)(guo)產化，全(quan)部采(cai)用的(de)(de)(de)日本進口X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)。為(wei)了(le)(le)(le)(le)解決這一難題，在(zai)(zai)《西(xi)氣(qi)(qi)(qi)東(dong)(dong)(dong)輸(shu)二(er)(er)(er)線(xian)工(gong)程(cheng)關鍵技(ji)術研(yan)究(jiu)(jiu)》重大(da)(da)(da)(da)(da)(da)專(zhuan)(zhuan)項二(er)(er)(er)期研(yan)究(jiu)(jiu)中(zhong)(zhong)(zhong)，把大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)作為(wei)研(yan)究(jiu)(jiu)重點進一步(bu)開展研(yan)究(jiu)(jiu)。經過(guo)(guo)重大(da)(da)(da)(da)(da)(da)專(zhuan)(zhuan)項參加(jia)的(de)(de)(de)各(ge)鋼(gang)(gang)(gang)廠(chang)和(he)(he)(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)廠(chang)的(de)(de)(de)通(tong)力合作，X70、X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)研(yan)究(jiu)(jiu)成功(gong)(gong)。X70大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)于(yu)2011年9月(yue)通(tong)過(guo)(guo)了(le)(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)(guo)石(shi)油(you)天然(ran)氣(qi)(qi)(qi)集團公(gong)(gong)(gong)(gong)司(si)(si)和(he)(he)(he)中(zhong)(zhong)(zhong)國(guo)(guo)(guo)鋼(gang)(gang)(gang)鐵工(gong)業協會在(zai)(zai)北京(jing)組織(zhi)的(de)(de)(de)鑒定。X70大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)成功(gong)(gong)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)用于(yu)中(zhong)(zhong)(zhong)緬管(guan)(guan)(guan)(guan)道，由渤(bo)海裝(zhuang)備所屬巨龍(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)(gong)(gong)司(si)(si)、寶鋼(gang)(gang)(gang)股份有(you)限公(gong)(gong)(gong)(gong)司(si)(si)和(he)(he)(he)寶雞鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)所屬中(zhong)(zhong)(zhong)油(you)寶世順(shun)（秦皇島）鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)有(you)限公(gong)(gong)(gong)(gong)司(si)(si)供(gong)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)X70大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)共(gong)計4萬(wan)多(duo)噸，實現(xian)(xian)(xian)了(le)(le)(le)(le)全(quan)面國(guo)(guo)(guo)產化，填(tian)補(bu)了(le)(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)(guo)X70大(da)(da)(da)(da)(da)(da)變(bian)(bian)(bian)形焊(han)管(guan)(guan)(guan)(guan)制(zhi)(zhi)造空(kong)(kong)白。由鞍(an)鋼(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)供(gong)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)鋼(gang)(gang)(gang)板，巨龍(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)(gong)(gong)司(si)(si)和(he)(he)(he)寶世順(shun)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)(gong)(gong)司(si)(si)研(yan)制(zhi)(zhi)的(de)(de)(de)X80完成了(le)(le)(le)(le)千噸級(ji)試生產，并于(yu)2012年11月(yue)通(tong)過(guo)(guo)了(le)(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)(guo)石(shi)油(you)天然(ran)氣(qi)(qi)(qi)集團公(gong)(gong)(gong)(gong)司(si)(si)在(zai)(zai)北京(jing)組織(zhi)的(de)(de)(de)鑒定。標志著中(zhong)(zhong)(zhong)國(guo)(guo)(guo)X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)具備了(le)(le)(le)(le)批(pi)量(liang)生產能(neng)(neng)力。2012年，中(zhong)(zhong)(zhong)油(you)寶世順(shun)（秦皇島）鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)有(you)限公(gong)(gong)(gong)(gong)司(si)(si)和(he)(he)(he)巨龍(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)(gong)(gong)司(si)(si)為(wei)西(xi)氣(qi)(qi)(qi)東(dong)(dong)(dong)輸(shu)三線(xian)供(gong)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)X80鋼(gang)(gang)(gang)級(ji)ф1219mm×26.4mm大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)，填(tian)補(bu)了(le)(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)(guo)X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)制(zhi)(zhi)造空(kong)(kong)白。

  我國鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)廠家(jia)也在(zai)(zai)(zai)開發高寒地區K60和(he)(he)K65（X80）用管(guan)(guan)(guan)(guan)(guan)(guan)線鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)，并且取得(de)了(le)重大進(jin)展(zhan)。鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)低溫韌性(xing)和(he)(he)應變性(xing)能均比較理想(xiang)。正在(zai)(zai)(zai)進(jin)行(xing)進(jin)一步(bu)的(de)(de)開發。2006年(nian)原(yuan)華北石油(you)第(di)一機械廠巨龍(long)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)首次(ci)開發符合俄羅斯標準的(de)(de)輸(shu)(shu)送(song)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)K60材質直縫埋弧焊(han)(han)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年(nian)，渤海裝備(bei)所屬巨龍(long)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)研制成功了(le)耐低溫K60直縫焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)、彎管(guan)(guan)(guan)(guan)(guan)(guan)和(he)(he)管(guan)(guan)(guan)(guan)(guan)(guan)件，并為中俄原(yuan)油(you)管(guan)(guan)(guan)(guan)(guan)(guan)道（二期）供貨彎管(guan)(guan)(guan)(guan)(guan)(guan)Φ1220mm×33mm（36根(gen)）、φ1220mm×26.4mm（2根(gen)）。巨龍(long)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)研制生產(chan)的(de)(de)站場低溫環境（-45℃）用φ1422mm×30.8mm X80直縫埋弧焊(han)(han)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、站場低溫環境（-45℃）用φ1422mm×33.8mm X80感應加熱彎管(guan)(guan)(guan)(guan)(guan)(guan)、站場低溫環境（-45℃）用φ1422mm×1219×80三(san)通于2018年(nian)11月，在(zai)(zai)(zai)集團公(gong)司(si)進(jin)行(xing)鑒(jian)定(ding)，目(mu)前具備(bei)批量生產(chan)能力。該系(xi)列產(chan)品(pin)可實現-45℃環境下的(de)(de)裸露服役，從而(er)節省大量因保溫伴熱措施導致的(de)(de)建設與維護費用。該系(xi)列產(chan)品(pin)代表(biao)著(zhu)當(dang)前國內油(you)氣輸(shu)(shu)送(song)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)最高水平，填補(bu)了(le)國內空白。

  國(guo)(guo)內酸(suan)性服役環(huan)(huan)境用(yong)(yong)高等(deng)(deng)(deng)級焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)起(qi)步(bu)晚，但(dan)進步(bu)很快(kuai)。耐腐蝕管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)是(shi)(shi)輸(shu)(shu)送酸(suan)性天(tian)然(ran)氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)的(de)(de)重要(yao)用(yong)(yong)鋼(gang)(gang)(gang)，是(shi)(shi)目前管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)中(zhong)要(yao)求(qiu)最為(wei)嚴格、技術水(shui)平(ping)要(yao)求(qiu)最高的(de)(de)鋼(gang)(gang)(gang)種，是(shi)(shi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道用(yong)(yong)鋼(gang)(gang)(gang)系列的(de)(de)一個重要(yao)組成部(bu)分，是(shi)(shi)當代冶金技術和裝備水(shui)平(ping)完美結合的(de)(de)典(dian)型產(chan)品。國(guo)(guo)內焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)企(qi)業(ye)(ye)和冶金企(qi)業(ye)(ye)聯(lian)合攻關(guan)，在冶煉純凈化、連(lian)鑄低(di)倍控制(zhi)(zhi)、板(ban)(ban)材(cai)(cai)TMCP控制(zhi)(zhi)及耐酸(suan)焊(han)(han)(han)(han)材(cai)(cai)開發(fa)(fa)等(deng)(deng)(deng)方面取得巨(ju)大(da)成就。從(cong)鋼(gang)(gang)(gang)級來(lai)看，從(cong)主(zhu)要(yao)供(gong)應集輸(shu)(shu)的(de)(de)小(xiao)直(zhi)(zhi)(zhi)徑(jing)X52MS逐漸發(fa)(fa)展到大(da)直(zhi)(zhi)(zhi)徑(jing)長(chang)距離外輸(shu)(shu)用(yong)(yong)X65MS，X70MS也有(you)研發(fa)(fa)業(ye)(ye)績；從(cong)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)型來(lai)看，從(cong)小(xiao)口徑(jing)無(wu)縫(feng)、HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)發(fa)(fa)展到大(da)口徑(jing)埋(mai)(mai)弧(hu)(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)；從(cong)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)采(cai)用(yong)(yong)的(de)(de)原材(cai)(cai)料看，不僅有(you)螺(luo)旋管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)需要(yao)的(de)(de)熱軋(ya)卷(juan)板(ban)(ban)，也有(you)滿足大(da)口徑(jing)直(zhi)(zhi)(zhi)縫(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)寬厚(hou)板(ban)(ban)；從(cong)供(gong)應市(shi)場來(lai)看，不僅滿足國(guo)(guo)內中(zhong)石油、中(zhong)石化、中(zhong)海(hai)油等(deng)(deng)(deng)需求(qiu)發(fa)(fa)展，高等(deng)(deng)(deng)級酸(suan)性環(huan)(huan)境用(yong)(yong)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)還批量出口到中(zhong)東、中(zhong)亞和北美等(deng)(deng)(deng)國(guo)(guo)家和地區；典(dian)型管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠有(you)寶(bao)鋼(gang)(gang)(gang)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)部(bu)、渤(bo)海(hai)裝備、寶(bao)雞鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、珠(zhu)(zhu)江鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)(deng)(deng)企(qi)業(ye)(ye)，典(dian)型工程如2004年(nian)(nian)全部(bu)采(cai)用(yong)(yong)國(guo)(guo)產(chan)X65MS直(zhi)(zhi)(zhi)縫(feng)埋(mai)(mai)弧(hu)(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)忠(zhong)-武輸(shu)(shu)氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)工程，2015年(nian)(nian)寶(bao)鋼(gang)(gang)(gang)獨家供(gong)應2.68萬(wan)(wan)噸(dun)(dun)X65MS直(zhi)(zhi)(zhi)縫(feng)埋(mai)(mai)弧(hu)(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de) BP KHAZZAN 1期項目等(deng)(deng)(deng)。寶(bao)鋼(gang)(gang)(gang)股份有(you)限公(gong)司截至目前耐酸(suan)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)共(gong)計(ji)生(sheng)產(chan)55萬(wan)(wan)噸(dun)(dun)，其(qi)中(zhong)埋(mai)(mai)弧(hu)(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)約50萬(wan)(wan)噸(dun)(dun)，HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)約5萬(wan)(wan)噸(dun)(dun)；珠(zhu)(zhu)江鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)生(sheng)產(chan)的(de)(de)耐酸(suan)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)累計(ji)超過了(le)10萬(wan)(wan)噸(dun)(dun)；巨(ju)龍鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司為(wei)土(tu)庫曼、長(chang)慶油田(tian)等(deng)(deng)(deng)供(gong)貨共(gong)計(ji)3.4萬(wan)(wan)噸(dun)(dun)。