大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)技術(shu)日趨成(cheng)(cheng)(cheng)(cheng)熟。雙相組(zu)織管(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)(de)成(cheng)(cheng)(cheng)(cheng)功(gong)(gong)(gong)開(kai)發提高了(le)(le)(le)(le)高鋼(gang)(gang)(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)的(de)(de)(de)塑性變(bian)(bian)(bian)(bian)形(xing)(xing)能力，降低了(le)(le)(le)(le)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)時(shi)效性能，X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)均已成(cheng)(cheng)(cheng)(cheng)功(gong)(gong)(gong)開(kai)發，通過了(le)(le)(le)(le)新(xin)產(chan)(chan)(chan)品鑒定(ding)。我國(guo)(guo)(guo)西(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)在(zai)特殊地段成(cheng)(cheng)(cheng)(cheng)功(gong)(gong)(gong)采用(yong)了(le)(le)(le)(le)基于應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)的(de)(de)(de)設(she)(she)計，并批量應(ying)(ying)(ying)(ying)用(yong)了(le)(le)(le)(le)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)；在(zai)西(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)工(gong)程(cheng)開(kai)始前中(zhong)(zhong)石油(you)(you)集團公(gong)(gong)司(si)(si)(si)(si)(si)為滿足工(gong)程(cheng)需要，組(zu)織國(guo)(guo)(guo)內(nei)多(duo)(duo)個(ge)鋼(gang)(gang)(gang)(gang)(gang)(gang)廠(chang)(chang)和(he)制管(guan)(guan)(guan)(guan)廠(chang)(chang)開(kai)展了(le)(le)(le)(le)《西(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)工(gong)程(cheng)關(guan)鍵(jian)技術(shu)研(yan)(yan)究(jiu)(jiu)》重(zhong)(zhong)大(da)(da)(da)(da)專項(xiang)一(yi)期研(yan)(yan)究(jiu)(jiu)，先后完成(cheng)(cheng)(cheng)(cheng)了(le)(le)(le)(le)直縫、螺(luo)旋和(he)彎(wan)管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)件等(deng)產(chan)(chan)(chan)品研(yan)(yan)究(jiu)(jiu)，并實(shi)(shi)現了(le)(le)(le)(le)全(quan)(quan)部國(guo)(guo)(guo)產(chan)(chan)(chan)化。但西(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)基于應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)設(she)(she)計的(de)(de)(de)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)沒(mei)有實(shi)(shi)現國(guo)(guo)(guo)產(chan)(chan)(chan)化，全(quan)(quan)部采用(yong)的(de)(de)(de)日本(ben)進(jin)口X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)。為了(le)(le)(le)(le)解決這一(yi)難題，在(zai)《西(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)工(gong)程(cheng)關(guan)鍵(jian)技術(shu)研(yan)(yan)究(jiu)(jiu)》重(zhong)(zhong)大(da)(da)(da)(da)專項(xiang)二(er)期研(yan)(yan)究(jiu)(jiu)中(zhong)(zhong)，把大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)作為研(yan)(yan)究(jiu)(jiu)重(zhong)(zhong)點進(jin)一(yi)步開(kai)展研(yan)(yan)究(jiu)(jiu)。經過重(zhong)(zhong)大(da)(da)(da)(da)專項(xiang)參加的(de)(de)(de)各鋼(gang)(gang)(gang)(gang)(gang)(gang)廠(chang)(chang)和(he)制管(guan)(guan)(guan)(guan)廠(chang)(chang)的(de)(de)(de)通力合作，X70、X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)研(yan)(yan)究(jiu)(jiu)成(cheng)(cheng)(cheng)(cheng)功(gong)(gong)(gong)。X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)于2011年(nian)(nian)9月(yue)通過了(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)石油(you)(you)天(tian)然(ran)氣(qi)(qi)(qi)集團公(gong)(gong)司(si)(si)(si)(si)(si)和(he)中(zhong)(zhong)國(guo)(guo)(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)鐵工(gong)業協會在(zai)北(bei)(bei)京組(zu)織的(de)(de)(de)鑒定(ding)。X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)成(cheng)(cheng)(cheng)(cheng)功(gong)(gong)(gong)應(ying)(ying)(ying)(ying)用(yong)于中(zhong)(zhong)緬管(guan)(guan)(guan)(guan)道，由渤海裝備所(suo)屬巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)(si)(si)(si)、寶(bao)鋼(gang)(gang)(gang)(gang)(gang)(gang)股(gu)份有限(xian)公(gong)(gong)司(si)(si)(si)(si)(si)和(he)寶(bao)雞鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)所(suo)屬中(zhong)(zhong)油(you)(you)寶(bao)世(shi)順(shun)(shun)（秦(qin)皇島）鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)有限(xian)公(gong)(gong)司(si)(si)(si)(si)(si)供應(ying)(ying)(ying)(ying)X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)共計4萬多(duo)(duo)噸，實(shi)(shi)現了(le)(le)(le)(le)全(quan)(quan)面國(guo)(guo)(guo)產(chan)(chan)(chan)化，填補了(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)X70大(da)(da)(da)(da)變(bian)(bian)(bian)(bian)形(xing)(xing)焊(han)(han)管(guan)(guan)(guan)(guan)制造(zao)空(kong)白。由鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)、沙(sha)鋼(gang)(gang)(gang)(gang)(gang)(gang)供應(ying)(ying)(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)(gang)板(ban)，巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)(si)(si)(si)和(he)寶(bao)世(shi)順(shun)(shun)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)(si)(si)(si)研(yan)(yan)制的(de)(de)(de)X80完成(cheng)(cheng)(cheng)(cheng)了(le)(le)(le)(le)千噸級試生產(chan)(chan)(chan)，并于2012年(nian)(nian)11月(yue)通過了(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)石油(you)(you)天(tian)然(ran)氣(qi)(qi)(qi)集團公(gong)(gong)司(si)(si)(si)(si)(si)在(zai)北(bei)(bei)京組(zu)織的(de)(de)(de)鑒定(ding)。標志著中(zhong)(zhong)國(guo)(guo)(guo)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)具(ju)備了(le)(le)(le)(le)批量生產(chan)(chan)(chan)能力。2012年(nian)(nian)，中(zhong)(zhong)油(you)(you)寶(bao)世(shi)順(shun)(shun)（秦(qin)皇島）鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)有限(xian)公(gong)(gong)司(si)(si)(si)(si)(si)和(he)巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)(si)(si)(si)為西(xi)氣(qi)(qi)(qi)東(dong)(dong)輸三(san)線(xian)供應(ying)(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)焊(han)(han)管(guan)(guan)(guan)(guan)，填補了(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)焊(han)(han)管(guan)(guan)(guan)(guan)制造(zao)空(kong)白。

  我(wo)國鋼(gang)(gang)管(guan)(guan)(guan)(guan)廠(chang)家(jia)也在(zai)(zai)開(kai)發(fa)高寒地區K60和(he)(he)K65（X80）用管(guan)(guan)(guan)(guan)線鋼(gang)(gang)管(guan)(guan)(guan)(guan)，并(bing)(bing)且(qie)取(qu)得了(le)重大進(jin)展(zhan)。鋼(gang)(gang)管(guan)(guan)(guan)(guan)的(de)低(di)溫(wen)韌性(xing)和(he)(he)應變性(xing)能均比較理想。正在(zai)(zai)進(jin)行(xing)進(jin)一步的(de)開(kai)發(fa)。2006年(nian)原華北石油第一機(ji)械廠(chang)巨龍(long)鋼(gang)(gang)管(guan)(guan)(guan)(guan)首次(ci)開(kai)發(fa)符合俄(e)羅斯標準的(de)輸(shu)送鋼(gang)(gang)管(guan)(guan)(guan)(guan)K60材(cai)質直(zhi)縫埋(mai)弧焊鋼(gang)(gang)管(guan)(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年(nian)，渤海裝備所(suo)屬巨龍(long)鋼(gang)(gang)管(guan)(guan)(guan)(guan)公司(si)(si)研制成功了(le)耐(nai)低(di)溫(wen)K60直(zhi)縫焊管(guan)(guan)(guan)(guan)、彎管(guan)(guan)(guan)(guan)和(he)(he)管(guan)(guan)(guan)(guan)件，并(bing)(bing)為中俄(e)原油管(guan)(guan)(guan)(guan)道（二(er)期）供貨彎管(guan)(guan)(guan)(guan)Φ1220mm×33mm（36根(gen)）、φ1220mm×26.4mm（2根(gen)）。巨龍(long)鋼(gang)(gang)管(guan)(guan)(guan)(guan)公司(si)(si)研制生(sheng)產的(de)站(zhan)場低(di)溫(wen)環(huan)境(jing)（-45℃）用φ1422mm×30.8mm X80直(zhi)縫埋(mai)弧焊鋼(gang)(gang)管(guan)(guan)(guan)(guan)、站(zhan)場低(di)溫(wen)環(huan)境(jing)（-45℃）用φ1422mm×33.8mm X80感(gan)應加熱(re)彎管(guan)(guan)(guan)(guan)、站(zhan)場低(di)溫(wen)環(huan)境(jing)（-45℃）用φ1422mm×1219×80三(san)通于(yu)2018年(nian)11月，在(zai)(zai)集團公司(si)(si)進(jin)行(xing)鑒定，目(mu)前具備批量生(sheng)產能力。該系列產品(pin)可實(shi)現-45℃環(huan)境(jing)下的(de)裸露服役，從而節省(sheng)大量因保溫(wen)伴熱(re)措施導(dao)致的(de)建(jian)設與維護費用。該系列產品(pin)代表著(zhu)當前國內油氣輸(shu)送鋼(gang)(gang)管(guan)(guan)(guan)(guan)最高水平，填補了(le)國內空白。

  國(guo)(guo)內酸(suan)性(xing)服役環(huan)境用(yong)高等(deng)級(ji)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)起(qi)步(bu)(bu)晚，但(dan)進步(bu)(bu)很(hen)快。耐腐(fu)蝕管(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)是(shi)(shi)輸(shu)送酸(suan)性(xing)天然氣管(guan)(guan)(guan)(guan)(guan)線(xian)的(de)(de)重要(yao)用(yong)鋼(gang)，是(shi)(shi)目(mu)前管(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)中(zhong)要(yao)求(qiu)(qiu)最為嚴格、技術水(shui)平要(yao)求(qiu)(qiu)最高的(de)(de)鋼(gang)種，是(shi)(shi)管(guan)(guan)(guan)(guan)(guan)道用(yong)鋼(gang)系列(lie)的(de)(de)一個(ge)重要(yao)組成部(bu)分(fen)，是(shi)(shi)當代冶(ye)(ye)金(jin)技術和(he)裝備水(shui)平完(wan)美結合的(de)(de)典型產(chan)(chan)品。國(guo)(guo)內焊(han)(han)管(guan)(guan)(guan)(guan)(guan)企(qi)業和(he)冶(ye)(ye)金(jin)企(qi)業聯合攻關，在冶(ye)(ye)煉純(chun)凈化、連鑄低倍控(kong)制(zhi)(zhi)、板材(cai)TMCP控(kong)制(zhi)(zhi)及(ji)耐酸(suan)焊(han)(han)材(cai)開發等(deng)方面取得巨大成就。從(cong)鋼(gang)級(ji)來看(kan)(kan)，從(cong)主要(yao)供應集(ji)輸(shu)的(de)(de)小(xiao)直徑(jing)(jing)X52MS逐漸(jian)發展(zhan)到大直徑(jing)(jing)長(chang)距離(li)外輸(shu)用(yong)X65MS，X70MS也(ye)有(you)研發業績；從(cong)管(guan)(guan)(guan)(guan)(guan)型來看(kan)(kan)，從(cong)小(xiao)口徑(jing)(jing)無縫、HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)發展(zhan)到大口徑(jing)(jing)埋(mai)(mai)(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)；從(cong)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)采(cai)用(yong)的(de)(de)原材(cai)料看(kan)(kan)，不僅(jin)有(you)螺(luo)旋管(guan)(guan)(guan)(guan)(guan)和(he)HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)需要(yao)的(de)(de)熱軋卷板，也(ye)有(you)滿足(zu)大口徑(jing)(jing)直縫焊(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de)寬厚板；從(cong)供應市場來看(kan)(kan)，不僅(jin)滿足(zu)國(guo)(guo)內中(zhong)石油、中(zhong)石化、中(zhong)海(hai)油等(deng)需求(qiu)(qiu)發展(zhan)，高等(deng)級(ji)酸(suan)性(xing)環(huan)境用(yong)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)還批量出(chu)口到中(zhong)東、中(zhong)亞和(he)北(bei)美等(deng)國(guo)(guo)家(jia)和(he)地區(qu)；典型管(guan)(guan)(guan)(guan)(guan)廠(chang)有(you)寶(bao)鋼(gang)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)部(bu)、渤海(hai)裝備、寶(bao)雞鋼(gang)管(guan)(guan)(guan)(guan)(guan)、珠江(jiang)鋼(gang)管(guan)(guan)(guan)(guan)(guan)等(deng)企(qi)業，典型工程如2004年(nian)(nian)全部(bu)采(cai)用(yong)國(guo)(guo)產(chan)(chan)X65MS直縫埋(mai)(mai)(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de)忠-武輸(shu)氣管(guan)(guan)(guan)(guan)(guan)線(xian)工程，2015年(nian)(nian)寶(bao)鋼(gang)獨家(jia)供應2.68萬噸(dun)X65MS直縫埋(mai)(mai)(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de) BP KHAZZAN 1期(qi)項目(mu)等(deng)。寶(bao)鋼(gang)股份有(you)限公(gong)司(si)截至(zhi)目(mu)前耐酸(suan)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)共計(ji)生產(chan)(chan)55萬噸(dun)，其中(zhong)埋(mai)(mai)(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)約(yue)50萬噸(dun)，HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)約(yue)5萬噸(dun)；珠江(jiang)鋼(gang)管(guan)(guan)(guan)(guan)(guan)生產(chan)(chan)的(de)(de)耐酸(suan)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)累計(ji)超過(guo)了10萬噸(dun)；巨龍(long)鋼(gang)管(guan)(guan)(guan)(guan)(guan)公(gong)司(si)為土庫曼(man)、長(chang)慶(qing)油田等(deng)供貨共計(ji)3.4萬噸(dun)。