大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)技術(shu)日趨成(cheng)(cheng)熟。雙(shuang)相組(zu)織(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)的(de)成(cheng)(cheng)功(gong)開(kai)(kai)發提(ti)高了(le)(le)(le)(le)(le)(le)高鋼(gang)(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)塑性變(bian)(bian)(bian)形(xing)能力，降低了(le)(le)(le)(le)(le)(le)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)時效性能，X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)均已成(cheng)(cheng)功(gong)開(kai)(kai)發，通過了(le)(le)(le)(le)(le)(le)新產(chan)(chan)(chan)(chan)品鑒定。我(wo)國(guo)(guo)(guo)(guo)西(xi)氣(qi)東(dong)(dong)輸二(er)(er)線(xian)在(zai)特殊(shu)地段成(cheng)(cheng)功(gong)采(cai)用了(le)(le)(le)(le)(le)(le)基于(yu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)的(de)設計(ji)，并批量應(ying)(ying)(ying)(ying)用了(le)(le)(le)(le)(le)(le)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；在(zai)西(xi)氣(qi)東(dong)(dong)輸二(er)(er)線(xian)工程開(kai)(kai)始(shi)前中(zhong)(zhong)石油(you)(you)集(ji)團(tuan)公(gong)司(si)(si)為滿足工程需要，組(zu)織(zhi)(zhi)國(guo)(guo)(guo)(guo)內多個(ge)鋼(gang)(gang)(gang)(gang)(gang)廠和制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)廠開(kai)(kai)展了(le)(le)(le)(le)(le)(le)《西(xi)氣(qi)東(dong)(dong)輸二(er)(er)線(xian)工程關(guan)鍵技術(shu)研(yan)究(jiu)》重(zhong)(zhong)(zhong)(zhong)大(da)(da)(da)(da)專(zhuan)(zhuan)項一(yi)期(qi)研(yan)究(jiu)，先后(hou)完(wan)成(cheng)(cheng)了(le)(le)(le)(le)(le)(le)直縫(feng)、螺(luo)旋和彎(wan)管(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)件等產(chan)(chan)(chan)(chan)品研(yan)究(jiu)，并實現了(le)(le)(le)(le)(le)(le)全部國(guo)(guo)(guo)(guo)產(chan)(chan)(chan)(chan)化(hua)。但西(xi)氣(qi)東(dong)(dong)輸二(er)(er)線(xian)基于(yu)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)設計(ji)的(de)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)沒有(you)實現國(guo)(guo)(guo)(guo)產(chan)(chan)(chan)(chan)化(hua)，全部采(cai)用的(de)日本(ben)進口X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)。為了(le)(le)(le)(le)(le)(le)解決這一(yi)難題，在(zai)《西(xi)氣(qi)東(dong)(dong)輸二(er)(er)線(xian)工程關(guan)鍵技術(shu)研(yan)究(jiu)》重(zhong)(zhong)(zhong)(zhong)大(da)(da)(da)(da)專(zhuan)(zhuan)項二(er)(er)期(qi)研(yan)究(jiu)中(zhong)(zhong)，把大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)作為研(yan)究(jiu)重(zhong)(zhong)(zhong)(zhong)點進一(yi)步(bu)開(kai)(kai)展研(yan)究(jiu)。經(jing)過重(zhong)(zhong)(zhong)(zhong)大(da)(da)(da)(da)專(zhuan)(zhuan)項參加的(de)各鋼(gang)(gang)(gang)(gang)(gang)廠和制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)廠的(de)通力合作，X70、X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)研(yan)究(jiu)成(cheng)(cheng)功(gong)。X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)于(yu)2011年(nian)9月通過了(le)(le)(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)(guo)石油(you)(you)天然(ran)氣(qi)集(ji)團(tuan)公(gong)司(si)(si)和中(zhong)(zhong)國(guo)(guo)(guo)(guo)鋼(gang)(gang)(gang)(gang)(gang)鐵工業(ye)協會在(zai)北(bei)京組(zu)織(zhi)(zhi)的(de)鑒定。X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)成(cheng)(cheng)功(gong)應(ying)(ying)(ying)(ying)用于(yu)中(zhong)(zhong)緬管(guan)(guan)(guan)(guan)(guan)(guan)道，由渤海裝備(bei)所屬巨(ju)(ju)龍鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)、寶(bao)鋼(gang)(gang)(gang)(gang)(gang)股(gu)份(fen)有(you)限公(gong)司(si)(si)和寶(bao)雞鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)所屬中(zhong)(zhong)油(you)(you)寶(bao)世(shi)順（秦皇島）鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)有(you)限公(gong)司(si)(si)供應(ying)(ying)(ying)(ying)X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)共計(ji)4萬多噸，實現了(le)(le)(le)(le)(le)(le)全面(mian)國(guo)(guo)(guo)(guo)產(chan)(chan)(chan)(chan)化(hua)，填補(bu)了(le)(le)(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)(guo)X70大(da)(da)(da)(da)變(bian)(bian)(bian)形(xing)焊管(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造空(kong)白。由鞍鋼(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)供應(ying)(ying)(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)板，巨(ju)(ju)龍鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)和寶(bao)世(shi)順鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)研(yan)制(zhi)(zhi)的(de)X80完(wan)成(cheng)(cheng)了(le)(le)(le)(le)(le)(le)千(qian)噸級試(shi)生產(chan)(chan)(chan)(chan)，并于(yu)2012年(nian)11月通過了(le)(le)(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)(guo)石油(you)(you)天然(ran)氣(qi)集(ji)團(tuan)公(gong)司(si)(si)在(zai)北(bei)京組(zu)織(zhi)(zhi)的(de)鑒定。標(biao)志著中(zhong)(zhong)國(guo)(guo)(guo)(guo)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)具備(bei)了(le)(le)(le)(le)(le)(le)批量生產(chan)(chan)(chan)(chan)能力。2012年(nian)，中(zhong)(zhong)油(you)(you)寶(bao)世(shi)順（秦皇島）鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)有(you)限公(gong)司(si)(si)和巨(ju)(ju)龍鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)為西(xi)氣(qi)東(dong)(dong)輸三線(xian)供應(ying)(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)(guan)，填補(bu)了(le)(le)(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)(guo)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)變(bian)(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造空(kong)白。

  我國鋼(gang)管(guan)(guan)(guan)廠(chang)家也(ye)在開發高寒地區K60和(he)K65（X80）用(yong)管(guan)(guan)(guan)線鋼(gang)管(guan)(guan)(guan)，并且(qie)取(qu)得了重大進(jin)(jin)展。鋼(gang)管(guan)(guan)(guan)的低(di)溫韌性(xing)和(he)應變性(xing)能(neng)均比較理想。正在進(jin)(jin)行(xing)進(jin)(jin)一步(bu)的開發。2006年原華(hua)北石油第一機(ji)械(xie)廠(chang)巨(ju)龍鋼(gang)管(guan)(guan)(guan)首(shou)次開發符合俄(e)羅斯標準(zhun)的輸送鋼(gang)管(guan)(guan)(guan)K60材質直縫埋弧焊鋼(gang)管(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年，渤海裝備所屬(shu)巨(ju)龍鋼(gang)管(guan)(guan)(guan)公(gong)司研制成功了耐(nai)低(di)溫K60直縫焊管(guan)(guan)(guan)、彎管(guan)(guan)(guan)和(he)管(guan)(guan)(guan)件(jian)，并為中俄(e)原油管(guan)(guan)(guan)道(dao)（二期(qi)）供貨彎管(guan)(guan)(guan)Φ1220mm×33mm（36根(gen)）、φ1220mm×26.4mm（2根(gen)）。巨(ju)龍鋼(gang)管(guan)(guan)(guan)公(gong)司研制生產(chan)的站(zhan)(zhan)場低(di)溫環境（-45℃）用(yong)φ1422mm×30.8mm X80直縫埋弧焊鋼(gang)管(guan)(guan)(guan)、站(zhan)(zhan)場低(di)溫環境（-45℃）用(yong)φ1422mm×33.8mm X80感(gan)應加熱彎管(guan)(guan)(guan)、站(zhan)(zhan)場低(di)溫環境（-45℃）用(yong)φ1422mm×1219×80三(san)通于2018年11月(yue)，在集團公(gong)司進(jin)(jin)行(xing)鑒(jian)定，目前具備批量(liang)生產(chan)能(neng)力。該(gai)系列產(chan)品(pin)可實現-45℃環境下(xia)的裸露服役，從而(er)節省大量(liang)因保溫伴熱措(cuo)施(shi)導致(zhi)的建設與維護費(fei)用(yong)。該(gai)系列產(chan)品(pin)代表(biao)著當前國內油氣(qi)輸送鋼(gang)管(guan)(guan)(guan)最高水平，填補了國內空白。

  國(guo)(guo)內酸性(xing)服(fu)役環境(jing)用(yong)(yong)高等級(ji)焊(han)(han)(han)管(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)線鋼(gang)(gang)(gang)是輸(shu)送酸性(xing)天然氣(qi)管(guan)(guan)(guan)(guan)(guan)(guan)線的(de)重(zhong)要(yao)用(yong)(yong)鋼(gang)(gang)(gang)，是目前管(guan)(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)中(zhong)要(yao)求(qiu)最為嚴格、技術水(shui)平要(yao)求(qiu)最高的(de)鋼(gang)(gang)(gang)種，是管(guan)(guan)(guan)(guan)(guan)(guan)道用(yong)(yong)鋼(gang)(gang)(gang)系(xi)列的(de)一個重(zhong)要(yao)組成部分，是當(dang)代冶(ye)金技術和(he)裝備(bei)水(shui)平完美結合(he)(he)的(de)典型(xing)產品(pin)。國(guo)(guo)內焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)企(qi)(qi)業(ye)和(he)冶(ye)金企(qi)(qi)業(ye)聯(lian)合(he)(he)攻關(guan)，在冶(ye)煉(lian)純凈化(hua)、連鑄低(di)倍控(kong)制(zhi)、板材TMCP控(kong)制(zhi)及耐(nai)酸焊(han)(han)(han)材開發等方面取得(de)巨大成就。從(cong)(cong)鋼(gang)(gang)(gang)級(ji)來看(kan)，從(cong)(cong)主要(yao)供應集輸(shu)的(de)小(xiao)直(zhi)徑X52MS逐漸發展到大直(zhi)徑長距離(li)外輸(shu)用(yong)(yong)X65MS，X70MS也(ye)有(you)(you)研發業(ye)績；從(cong)(cong)管(guan)(guan)(guan)(guan)(guan)(guan)型(xing)來看(kan)，從(cong)(cong)小(xiao)口(kou)(kou)徑無縫、HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)發展到大口(kou)(kou)徑埋(mai)弧(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)；從(cong)(cong)制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)采用(yong)(yong)的(de)原材料(liao)看(kan)，不僅有(you)(you)螺(luo)旋管(guan)(guan)(guan)(guan)(guan)(guan)和(he)HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)需要(yao)的(de)熱軋卷板，也(ye)有(you)(you)滿(man)(man)足(zu)(zu)大口(kou)(kou)徑直(zhi)縫焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)寬厚板；從(cong)(cong)供應市場來看(kan)，不僅滿(man)(man)足(zu)(zu)國(guo)(guo)內中(zhong)石(shi)油(you)、中(zhong)石(shi)化(hua)、中(zhong)海油(you)等需求(qiu)發展，高等級(ji)酸性(xing)環境(jing)用(yong)(yong)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)還批量(liang)出口(kou)(kou)到中(zhong)東、中(zhong)亞和(he)北美等國(guo)(guo)家(jia)和(he)地區；典型(xing)管(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)有(you)(you)寶(bao)鋼(gang)(gang)(gang)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)部、渤(bo)海裝備(bei)、寶(bao)雞鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、珠江(jiang)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)等企(qi)(qi)業(ye)，典型(xing)工程如2004年全部采用(yong)(yong)國(guo)(guo)產X65MS直(zhi)縫埋(mai)弧(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)忠-武(wu)輸(shu)氣(qi)管(guan)(guan)(guan)(guan)(guan)(guan)線工程，2015年寶(bao)鋼(gang)(gang)(gang)獨家(jia)供應2.68萬(wan)噸(dun)X65MS直(zhi)縫埋(mai)弧(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de) BP KHAZZAN 1期項目等。寶(bao)鋼(gang)(gang)(gang)股(gu)份有(you)(you)限(xian)公司截至目前耐(nai)酸焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)共計生產55萬(wan)噸(dun)，其中(zhong)埋(mai)弧(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)約50萬(wan)噸(dun)，HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)約5萬(wan)噸(dun)；珠江(jiang)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)生產的(de)耐(nai)酸焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)累(lei)計超過(guo)了10萬(wan)噸(dun)；巨龍(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公司為土(tu)庫曼(man)、長慶油(you)田等供貨共計3.4萬(wan)噸(dun)。