大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)技(ji)(ji)術日趨成熟。雙相組織管(guan)(guan)(guan)線鋼(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)成功開(kai)發提(ti)高了(le)(le)(le)(le)高鋼(gang)(gang)(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)線鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)的(de)(de)塑性(xing)變(bian)(bian)(bian)(bian)形(xing)能力，降低了(le)(le)(le)(le)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)時效性(xing)能，X80大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)均已成功開(kai)發，通(tong)過(guo)(guo)了(le)(le)(le)(le)新產(chan)(chan)(chan)品鑒定。我(wo)國(guo)(guo)西氣(qi)東(dong)輸(shu)二線在(zai)特殊地段成功采用了(le)(le)(le)(le)基(ji)于(yu)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)的(de)(de)設計(ji)，并(bing)批量應(ying)(ying)(ying)(ying)(ying)用了(le)(le)(le)(le)X80大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)；在(zai)西氣(qi)東(dong)輸(shu)二線工程(cheng)(cheng)開(kai)始(shi)前中(zhong)石油(you)(you)集團(tuan)公(gong)(gong)司(si)(si)為(wei)滿足工程(cheng)(cheng)需要(yao)，組織國(guo)(guo)內多個鋼(gang)(gang)(gang)(gang)(gang)(gang)廠(chang)和(he)(he)(he)制(zhi)管(guan)(guan)(guan)廠(chang)開(kai)展了(le)(le)(le)(le)《西氣(qi)東(dong)輸(shu)二線工程(cheng)(cheng)關鍵技(ji)(ji)術研(yan)(yan)究(jiu)(jiu)(jiu)(jiu)》重大(da)(da)(da)(da)(da)專(zhuan)項(xiang)一期(qi)研(yan)(yan)究(jiu)(jiu)(jiu)(jiu)，先(xian)后(hou)完成了(le)(le)(le)(le)直縫、螺旋和(he)(he)(he)彎管(guan)(guan)(guan)管(guan)(guan)(guan)件等(deng)產(chan)(chan)(chan)品研(yan)(yan)究(jiu)(jiu)(jiu)(jiu)，并(bing)實(shi)(shi)(shi)現了(le)(le)(le)(le)全(quan)部(bu)國(guo)(guo)產(chan)(chan)(chan)化。但西氣(qi)東(dong)輸(shu)二線基(ji)于(yu)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)設計(ji)的(de)(de)X80大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)沒(mei)有(you)(you)實(shi)(shi)(shi)現國(guo)(guo)產(chan)(chan)(chan)化，全(quan)部(bu)采用的(de)(de)日本進口X80大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)。為(wei)了(le)(le)(le)(le)解決這一難題，在(zai)《西氣(qi)東(dong)輸(shu)二線工程(cheng)(cheng)關鍵技(ji)(ji)術研(yan)(yan)究(jiu)(jiu)(jiu)(jiu)》重大(da)(da)(da)(da)(da)專(zhuan)項(xiang)二期(qi)研(yan)(yan)究(jiu)(jiu)(jiu)(jiu)中(zhong)，把大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)作為(wei)研(yan)(yan)究(jiu)(jiu)(jiu)(jiu)重點進一步(bu)開(kai)展研(yan)(yan)究(jiu)(jiu)(jiu)(jiu)。經(jing)過(guo)(guo)重大(da)(da)(da)(da)(da)專(zhuan)項(xiang)參加的(de)(de)各鋼(gang)(gang)(gang)(gang)(gang)(gang)廠(chang)和(he)(he)(he)制(zhi)管(guan)(guan)(guan)廠(chang)的(de)(de)通(tong)力合作，X70、X80大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)研(yan)(yan)究(jiu)(jiu)(jiu)(jiu)成功。X70大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)于(yu)2011年9月(yue)(yue)通(tong)過(guo)(guo)了(le)(le)(le)(le)中(zhong)國(guo)(guo)石油(you)(you)天然(ran)氣(qi)集團(tuan)公(gong)(gong)司(si)(si)和(he)(he)(he)中(zhong)國(guo)(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)鐵工業協會在(zai)北京組織的(de)(de)鑒定。X70大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)成功應(ying)(ying)(ying)(ying)(ying)用于(yu)中(zhong)緬管(guan)(guan)(guan)道(dao)，由渤海裝備所屬(shu)巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)公(gong)(gong)司(si)(si)、寶(bao)鋼(gang)(gang)(gang)(gang)(gang)(gang)股(gu)份有(you)(you)限(xian)公(gong)(gong)司(si)(si)和(he)(he)(he)寶(bao)雞鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)所屬(shu)中(zhong)油(you)(you)寶(bao)世(shi)順(shun)（秦皇島）鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)有(you)(you)限(xian)公(gong)(gong)司(si)(si)供應(ying)(ying)(ying)(ying)(ying)X70大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)共計(ji)4萬多噸(dun)(dun)，實(shi)(shi)(shi)現了(le)(le)(le)(le)全(quan)面國(guo)(guo)產(chan)(chan)(chan)化，填補(bu)了(le)(le)(le)(le)中(zhong)國(guo)(guo)X70大(da)(da)(da)(da)(da)變(bian)(bian)(bian)(bian)形(xing)焊管(guan)(guan)(guan)制(zhi)造空白。由鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)(gang)供應(ying)(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)公(gong)(gong)司(si)(si)和(he)(he)(he)寶(bao)世(shi)順(shun)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)公(gong)(gong)司(si)(si)研(yan)(yan)制(zhi)的(de)(de)X80完成了(le)(le)(le)(le)千噸(dun)(dun)級試生產(chan)(chan)(chan)，并(bing)于(yu)2012年11月(yue)(yue)通(tong)過(guo)(guo)了(le)(le)(le)(le)中(zhong)國(guo)(guo)石油(you)(you)天然(ran)氣(qi)集團(tuan)公(gong)(gong)司(si)(si)在(zai)北京組織的(de)(de)鑒定。標志(zhi)著中(zhong)國(guo)(guo)X80大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)具備了(le)(le)(le)(le)批量生產(chan)(chan)(chan)能力。2012年，中(zhong)油(you)(you)寶(bao)世(shi)順(shun)（秦皇島）鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)有(you)(you)限(xian)公(gong)(gong)司(si)(si)和(he)(he)(he)巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)公(gong)(gong)司(si)(si)為(wei)西氣(qi)東(dong)輸(shu)三線供應(ying)(ying)(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)焊管(guan)(guan)(guan)，填補(bu)了(le)(le)(le)(le)中(zhong)國(guo)(guo)X80大(da)(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)焊管(guan)(guan)(guan)制(zhi)造空白。

  我國鋼(gang)(gang)(gang)管(guan)廠家也在(zai)開發(fa)高(gao)寒地區K60和K65（X80）用管(guan)線鋼(gang)(gang)(gang)管(guan)，并且取得了重大(da)進展。鋼(gang)(gang)(gang)管(guan)的(de)低溫韌性(xing)和應(ying)變性(xing)能(neng)均比較理想。正(zheng)在(zai)進行進一步(bu)的(de)開發(fa)。2006年原華北石油第一機械(xie)廠巨(ju)(ju)龍(long)(long)鋼(gang)(gang)(gang)管(guan)首次開發(fa)符合俄(e)(e)羅斯(si)標(biao)準(zhun)的(de)輸送(song)鋼(gang)(gang)(gang)管(guan)K60材質直縫埋弧焊(han)鋼(gang)(gang)(gang)管(guan)φ1220mmx19／22／24mm，2011年，渤海(hai)裝備所屬巨(ju)(ju)龍(long)(long)鋼(gang)(gang)(gang)管(guan)公(gong)司研制成功了耐低溫K60直縫焊(han)管(guan)、彎(wan)管(guan)和管(guan)件，并為中俄(e)(e)原油管(guan)道（二期(qi)）供貨彎(wan)管(guan)Φ1220mm×33mm（36根）、φ1220mm×26.4mm（2根）。巨(ju)(ju)龍(long)(long)鋼(gang)(gang)(gang)管(guan)公(gong)司研制生產(chan)(chan)(chan)的(de)站(zhan)場(chang)(chang)低溫環境（-45℃）用φ1422mm×30.8mm X80直縫埋弧焊(han)鋼(gang)(gang)(gang)管(guan)、站(zhan)場(chang)(chang)低溫環境（-45℃）用φ1422mm×33.8mm X80感應(ying)加熱(re)(re)彎(wan)管(guan)、站(zhan)場(chang)(chang)低溫環境（-45℃）用φ1422mm×1219×80三通于2018年11月，在(zai)集(ji)團公(gong)司進行鑒(jian)定，目前(qian)具備批量(liang)生產(chan)(chan)(chan)能(neng)力(li)。該系(xi)(xi)列(lie)產(chan)(chan)(chan)品可實現-45℃環境下的(de)裸露服役，從而(er)節省大(da)量(liang)因保(bao)溫伴(ban)熱(re)(re)措施導致(zhi)的(de)建設與維護(hu)費(fei)用。該系(xi)(xi)列(lie)產(chan)(chan)(chan)品代表著當(dang)前(qian)國內(nei)(nei)油氣輸送(song)鋼(gang)(gang)(gang)管(guan)最高(gao)水平，填(tian)補(bu)了國內(nei)(nei)空白。

  國內酸性服役環境用(yong)高(gao)等(deng)(deng)(deng)(deng)級焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)起步晚，但進步很快。耐腐(fu)蝕管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)是(shi)輸送酸性天然(ran)氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線的(de)(de)(de)(de)重要(yao)(yao)用(yong)鋼(gang)(gang)(gang)，是(shi)目前管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)中(zhong)要(yao)(yao)求最為(wei)嚴格、技術水(shui)平要(yao)(yao)求最高(gao)的(de)(de)(de)(de)鋼(gang)(gang)(gang)種，是(shi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道用(yong)鋼(gang)(gang)(gang)系列(lie)的(de)(de)(de)(de)一個重要(yao)(yao)組成部(bu)分，是(shi)當(dang)代(dai)冶金技術和裝備(bei)水(shui)平完美(mei)結合(he)的(de)(de)(de)(de)典(dian)(dian)型(xing)產(chan)(chan)品(pin)。國內焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)企(qi)業和冶金企(qi)業聯合(he)攻(gong)關，在冶煉純凈化、連鑄低倍控(kong)制(zhi)(zhi)、板材(cai)TMCP控(kong)制(zhi)(zhi)及耐酸焊(han)(han)材(cai)開發(fa)等(deng)(deng)(deng)(deng)方(fang)面(mian)取(qu)得巨(ju)(ju)大成就。從(cong)(cong)(cong)鋼(gang)(gang)(gang)級來看，從(cong)(cong)(cong)主要(yao)(yao)供(gong)(gong)(gong)(gong)應集輸的(de)(de)(de)(de)小直(zhi)徑(jing)X52MS逐漸發(fa)展(zhan)(zhan)到(dao)大直(zhi)徑(jing)長距離(li)外輸用(yong)X65MS，X70MS也有(you)研(yan)發(fa)業績；從(cong)(cong)(cong)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)型(xing)來看，從(cong)(cong)(cong)小口徑(jing)無縫(feng)、HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)發(fa)展(zhan)(zhan)到(dao)大口徑(jing)埋(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)；從(cong)(cong)(cong)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)采(cai)用(yong)的(de)(de)(de)(de)原材(cai)料(liao)看，不(bu)僅(jin)有(you)螺旋管(guan)(guan)(guan)(guan)(guan)(guan)(guan)和HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)需要(yao)(yao)的(de)(de)(de)(de)熱軋卷板，也有(you)滿足(zu)大口徑(jing)直(zhi)縫(feng)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)寬(kuan)厚板；從(cong)(cong)(cong)供(gong)(gong)(gong)(gong)應市場來看，不(bu)僅(jin)滿足(zu)國內中(zhong)石油(you)(you)、中(zhong)石化、中(zhong)海(hai)油(you)(you)等(deng)(deng)(deng)(deng)需求發(fa)展(zhan)(zhan)，高(gao)等(deng)(deng)(deng)(deng)級酸性環境用(yong)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)還批量(liang)出口到(dao)中(zhong)東、中(zhong)亞和北美(mei)等(deng)(deng)(deng)(deng)國家和地區；典(dian)(dian)型(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠有(you)寶鋼(gang)(gang)(gang)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)部(bu)、渤海(hai)裝備(bei)、寶雞鋼(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)(deng)(deng)(deng)企(qi)業，典(dian)(dian)型(xing)工程如2004年(nian)(nian)全(quan)部(bu)采(cai)用(yong)國產(chan)(chan)X65MS直(zhi)縫(feng)埋(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)忠-武輸氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線工程，2015年(nian)(nian)寶鋼(gang)(gang)(gang)獨家供(gong)(gong)(gong)(gong)應2.68萬(wan)(wan)(wan)(wan)噸(dun)(dun)X65MS直(zhi)縫(feng)埋(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de) BP KHAZZAN 1期項(xiang)目等(deng)(deng)(deng)(deng)。寶鋼(gang)(gang)(gang)股份有(you)限(xian)公司(si)截(jie)至目前耐酸焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)共計生產(chan)(chan)55萬(wan)(wan)(wan)(wan)噸(dun)(dun)，其(qi)中(zhong)埋(mai)弧(hu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)約(yue)50萬(wan)(wan)(wan)(wan)噸(dun)(dun)，HFW焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)約(yue)5萬(wan)(wan)(wan)(wan)噸(dun)(dun)；珠江鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)生產(chan)(chan)的(de)(de)(de)(de)耐酸焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)累計超過了(le)10萬(wan)(wan)(wan)(wan)噸(dun)(dun)；巨(ju)(ju)龍鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)為(wei)土庫曼(man)、長慶油(you)(you)田等(deng)(deng)(deng)(deng)供(gong)(gong)(gong)(gong)貨共計3.4萬(wan)(wan)(wan)(wan)噸(dun)(dun)。