大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)技(ji)術日(ri)趨成(cheng)熟。雙相組(zu)織管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)的(de)成(cheng)功(gong)(gong)開發(fa)提(ti)高了(le)(le)(le)高鋼(gang)(gang)(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)塑性變(bian)(bian)(bian)形能(neng)力(li)，降(jiang)低了(le)(le)(le)應(ying)(ying)變(bian)(bian)(bian)時效性能(neng)，X80大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)均已成(cheng)功(gong)(gong)開發(fa)，通(tong)(tong)過(guo)(guo)(guo)了(le)(le)(le)新產(chan)(chan)品(pin)鑒(jian)(jian)定。我(wo)國(guo)(guo)西(xi)氣(qi)東輸(shu)(shu)(shu)二線(xian)(xian)在(zai)(zai)特殊地段成(cheng)功(gong)(gong)采(cai)用(yong)了(le)(le)(le)基于(yu)(yu)應(ying)(ying)變(bian)(bian)(bian)的(de)設計，并批量(liang)應(ying)(ying)用(yong)了(le)(le)(le)X80大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)；在(zai)(zai)西(xi)氣(qi)東輸(shu)(shu)(shu)二線(xian)(xian)工(gong)程(cheng)開始前中(zhong)(zhong)(zhong)石(shi)油(you)集團(tuan)(tuan)公司(si)(si)(si)(si)(si)為(wei)滿(man)足工(gong)程(cheng)需要，組(zu)織國(guo)(guo)內多個鋼(gang)(gang)(gang)(gang)(gang)(gang)廠和(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠開展了(le)(le)(le)《西(xi)氣(qi)東輸(shu)(shu)(shu)二線(xian)(xian)工(gong)程(cheng)關鍵技(ji)術研究(jiu)》重(zhong)大(da)專項(xiang)一期(qi)(qi)研究(jiu)，先(xian)后(hou)完(wan)成(cheng)了(le)(le)(le)直縫、螺旋和(he)彎管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件等(deng)產(chan)(chan)品(pin)研究(jiu)，并實(shi)現了(le)(le)(le)全部國(guo)(guo)產(chan)(chan)化(hua)。但西(xi)氣(qi)東輸(shu)(shu)(shu)二線(xian)(xian)基于(yu)(yu)應(ying)(ying)變(bian)(bian)(bian)設計的(de)X80大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)沒有(you)(you)實(shi)現國(guo)(guo)產(chan)(chan)化(hua)，全部采(cai)用(yong)的(de)日(ri)本(ben)進口X80大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。為(wei)了(le)(le)(le)解決這(zhe)一難(nan)題(ti)，在(zai)(zai)《西(xi)氣(qi)東輸(shu)(shu)(shu)二線(xian)(xian)工(gong)程(cheng)關鍵技(ji)術研究(jiu)》重(zhong)大(da)專項(xiang)二期(qi)(qi)研究(jiu)中(zhong)(zhong)(zhong)，把大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)作為(wei)研究(jiu)重(zhong)點進一步開展研究(jiu)。經(jing)過(guo)(guo)(guo)重(zhong)大(da)專項(xiang)參加的(de)各(ge)鋼(gang)(gang)(gang)(gang)(gang)(gang)廠和(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠的(de)通(tong)(tong)力(li)合作，X70、X80大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)研究(jiu)成(cheng)功(gong)(gong)。X70大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)于(yu)(yu)2011年9月通(tong)(tong)過(guo)(guo)(guo)了(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)石(shi)油(you)天然(ran)氣(qi)集團(tuan)(tuan)公司(si)(si)(si)(si)(si)和(he)中(zhong)(zhong)(zhong)國(guo)(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)鐵工(gong)業協會在(zai)(zai)北京(jing)組(zu)織的(de)鑒(jian)(jian)定。X70大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)成(cheng)功(gong)(gong)應(ying)(ying)用(yong)于(yu)(yu)中(zhong)(zhong)(zhong)緬管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道，由渤海裝(zhuang)備所屬(shu)巨龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)(si)(si)(si)(si)、寶(bao)鋼(gang)(gang)(gang)(gang)(gang)(gang)股份有(you)(you)限(xian)(xian)公司(si)(si)(si)(si)(si)和(he)寶(bao)雞鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)所屬(shu)中(zhong)(zhong)(zhong)油(you)寶(bao)世順(shun)（秦皇(huang)島）鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有(you)(you)限(xian)(xian)公司(si)(si)(si)(si)(si)供應(ying)(ying)X70大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)共計4萬多噸，實(shi)現了(le)(le)(le)全面國(guo)(guo)產(chan)(chan)化(hua)，填補了(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)X70大(da)變(bian)(bian)(bian)形焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造(zao)空白(bai)。由鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)(gang)供應(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)(gang)板，巨龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)(si)(si)(si)(si)和(he)寶(bao)世順(shun)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)(si)(si)(si)(si)研制(zhi)(zhi)的(de)X80完(wan)成(cheng)了(le)(le)(le)千噸級試生產(chan)(chan)，并于(yu)(yu)2012年11月通(tong)(tong)過(guo)(guo)(guo)了(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)石(shi)油(you)天然(ran)氣(qi)集團(tuan)(tuan)公司(si)(si)(si)(si)(si)在(zai)(zai)北京(jing)組(zu)織的(de)鑒(jian)(jian)定。標志著中(zhong)(zhong)(zhong)國(guo)(guo)X80大(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)具備了(le)(le)(le)批量(liang)生產(chan)(chan)能(neng)力(li)。2012年，中(zhong)(zhong)(zhong)油(you)寶(bao)世順(shun)（秦皇(huang)島）鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有(you)(you)限(xian)(xian)公司(si)(si)(si)(si)(si)和(he)巨龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)(si)(si)(si)(si)為(wei)西(xi)氣(qi)東輸(shu)(shu)(shu)三線(xian)(xian)供應(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)應(ying)(ying)變(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，填補了(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)X80大(da)應(ying)(ying)變(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造(zao)空白(bai)。

  我國鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)廠(chang)(chang)家也在(zai)開發(fa)高(gao)寒(han)地區(qu)K60和K65（X80）用(yong)(yong)管(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)，并且取得了重大進(jin)展。鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)(de)低溫(wen)(wen)(wen)韌性和應(ying)變性能均比(bi)較理想。正在(zai)進(jin)行進(jin)一步的(de)(de)開發(fa)。2006年原華北(bei)石油第一機械廠(chang)(chang)巨龍鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)首次開發(fa)符合俄(e)羅斯標(biao)準的(de)(de)輸送鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)K60材質直縫埋(mai)(mai)弧焊(han)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年，渤(bo)海裝(zhuang)備所屬(shu)巨龍鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司研(yan)制(zhi)成功了耐低溫(wen)(wen)(wen)K60直縫焊(han)管(guan)(guan)(guan)(guan)(guan)、彎(wan)管(guan)(guan)(guan)(guan)(guan)和管(guan)(guan)(guan)(guan)(guan)件，并為(wei)中俄(e)原油管(guan)(guan)(guan)(guan)(guan)道（二期）供貨彎(wan)管(guan)(guan)(guan)(guan)(guan)Φ1220mm×33mm（36根）、φ1220mm×26.4mm（2根）。巨龍鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司研(yan)制(zhi)生產(chan)的(de)(de)站(zhan)(zhan)場(chang)低溫(wen)(wen)(wen)環(huan)境（-45℃）用(yong)(yong)φ1422mm×30.8mm X80直縫埋(mai)(mai)弧焊(han)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、站(zhan)(zhan)場(chang)低溫(wen)(wen)(wen)環(huan)境（-45℃）用(yong)(yong)φ1422mm×33.8mm X80感應(ying)加熱彎(wan)管(guan)(guan)(guan)(guan)(guan)、站(zhan)(zhan)場(chang)低溫(wen)(wen)(wen)環(huan)境（-45℃）用(yong)(yong)φ1422mm×1219×80三通于2018年11月(yue)，在(zai)集團公(gong)(gong)司進(jin)行鑒(jian)定，目前(qian)具備批量生產(chan)能力。該系(xi)列(lie)產(chan)品可實(shi)現-45℃環(huan)境下的(de)(de)裸露服(fu)役，從(cong)而節省大量因保溫(wen)(wen)(wen)伴熱措(cuo)施導致的(de)(de)建(jian)設(she)與維護(hu)費用(yong)(yong)。該系(xi)列(lie)產(chan)品代表(biao)著當(dang)前(qian)國內(nei)(nei)油氣輸送鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)最高(gao)水平(ping)，填(tian)補了國內(nei)(nei)空白。

  國(guo)內酸(suan)(suan)性服役環境用(yong)(yong)高等(deng)級焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)起步晚，但進步很快。耐(nai)腐蝕(shi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)是(shi)(shi)輸(shu)(shu)(shu)送酸(suan)(suan)性天(tian)然氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)的重要(yao)(yao)用(yong)(yong)鋼(gang)(gang)(gang)，是(shi)(shi)目(mu)前管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)中(zhong)(zhong)(zhong)要(yao)(yao)求最(zui)為(wei)(wei)嚴格、技術水(shui)平要(yao)(yao)求最(zui)高的鋼(gang)(gang)(gang)種(zhong)，是(shi)(shi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道用(yong)(yong)鋼(gang)(gang)(gang)系(xi)列的一(yi)個(ge)重要(yao)(yao)組成(cheng)部(bu)分(fen)，是(shi)(shi)當代冶金技術和(he)裝(zhuang)備水(shui)平完美結合的典(dian)(dian)(dian)型產品(pin)。國(guo)內焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)企(qi)(qi)業和(he)冶金企(qi)(qi)業聯合攻關，在冶煉純(chun)凈化、連(lian)鑄(zhu)低(di)倍控制、板材(cai)TMCP控制及耐(nai)酸(suan)(suan)焊(han)(han)材(cai)開發(fa)等(deng)方面取(qu)得巨大(da)成(cheng)就。從(cong)(cong)(cong)(cong)鋼(gang)(gang)(gang)級來(lai)(lai)看(kan)，從(cong)(cong)(cong)(cong)主(zhu)要(yao)(yao)供(gong)應集輸(shu)(shu)(shu)的小直徑X52MS逐漸發(fa)展到大(da)直徑長距離(li)外輸(shu)(shu)(shu)用(yong)(yong)X65MS，X70MS也有研發(fa)業績；從(cong)(cong)(cong)(cong)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)型來(lai)(lai)看(kan)，從(cong)(cong)(cong)(cong)小口徑無縫(feng)、HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)發(fa)展到大(da)口徑埋(mai)(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)；從(cong)(cong)(cong)(cong)制管(guan)(guan)(guan)(guan)(guan)(guan)(guan)采用(yong)(yong)的原材(cai)料看(kan)，不(bu)僅(jin)(jin)有螺旋(xuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)需(xu)要(yao)(yao)的熱(re)軋卷板，也有滿(man)足(zu)大(da)口徑直縫(feng)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的寬厚板；從(cong)(cong)(cong)(cong)供(gong)應市場來(lai)(lai)看(kan)，不(bu)僅(jin)(jin)滿(man)足(zu)國(guo)內中(zhong)(zhong)(zhong)石(shi)油(you)、中(zhong)(zhong)(zhong)石(shi)化、中(zhong)(zhong)(zhong)海(hai)(hai)油(you)等(deng)需(xu)求發(fa)展，高等(deng)級酸(suan)(suan)性環境用(yong)(yong)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)還批量出(chu)口到中(zhong)(zhong)(zhong)東、中(zhong)(zhong)(zhong)亞和(he)北美等(deng)國(guo)家(jia)和(he)地區；典(dian)(dian)(dian)型管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠有寶(bao)(bao)(bao)鋼(gang)(gang)(gang)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)部(bu)、渤(bo)海(hai)(hai)裝(zhuang)備、寶(bao)(bao)(bao)雞(ji)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、珠江鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)企(qi)(qi)業，典(dian)(dian)(dian)型工程如(ru)2004年(nian)全部(bu)采用(yong)(yong)國(guo)產X65MS直縫(feng)埋(mai)(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的忠-武輸(shu)(shu)(shu)氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)工程，2015年(nian)寶(bao)(bao)(bao)鋼(gang)(gang)(gang)獨(du)家(jia)供(gong)應2.68萬噸(dun)X65MS直縫(feng)埋(mai)(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的 BP KHAZZAN 1期項目(mu)等(deng)。寶(bao)(bao)(bao)鋼(gang)(gang)(gang)股份有限公司截(jie)至目(mu)前耐(nai)酸(suan)(suan)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)共計(ji)生產55萬噸(dun)，其(qi)中(zhong)(zhong)(zhong)埋(mai)(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)約50萬噸(dun)，HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)約5萬噸(dun)；珠江鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)生產的耐(nai)酸(suan)(suan)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)累計(ji)超過了10萬噸(dun)；巨龍鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司為(wei)(wei)土(tu)庫曼、長慶油(you)田等(deng)供(gong)貨共計(ji)3.4萬噸(dun)。