大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)技(ji)術日趨成(cheng)熟。雙相(xiang)組織(zhi)(zhi)管(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)(gang)的(de)成(cheng)功(gong)開(kai)(kai)(kai)發提高(gao)了(le)高(gao)鋼(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)的(de)塑性變(bian)(bian)(bian)(bian)(bian)形(xing)能力，降低了(le)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)時效性能，X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)均已成(cheng)功(gong)開(kai)(kai)(kai)發，通過(guo)了(le)新產(chan)(chan)(chan)(chan)品(pin)(pin)鑒定。我國(guo)(guo)西(xi)(xi)(xi)氣(qi)東(dong)輸二線在(zai)特殊地段成(cheng)功(gong)采用了(le)基(ji)(ji)于(yu)(yu)(yu)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)的(de)設計，并(bing)(bing)批量(liang)應(ying)(ying)(ying)(ying)(ying)用了(le)X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)；在(zai)西(xi)(xi)(xi)氣(qi)東(dong)輸二線工(gong)(gong)程(cheng)開(kai)(kai)(kai)始前中(zhong)(zhong)(zhong)(zhong)石油集團公(gong)(gong)司(si)為滿足工(gong)(gong)程(cheng)需要，組織(zhi)(zhi)國(guo)(guo)內多個鋼(gang)(gang)(gang)(gang)廠和(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)廠開(kai)(kai)(kai)展(zhan)了(le)《西(xi)(xi)(xi)氣(qi)東(dong)輸二線工(gong)(gong)程(cheng)關鍵(jian)技(ji)術研(yan)(yan)究(jiu)(jiu)》重(zhong)(zhong)大(da)(da)專(zhuan)項一(yi)期研(yan)(yan)究(jiu)(jiu)，先后(hou)完(wan)成(cheng)了(le)直縫(feng)、螺旋(xuan)和(he)彎(wan)管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)件(jian)等產(chan)(chan)(chan)(chan)品(pin)(pin)研(yan)(yan)究(jiu)(jiu)，并(bing)(bing)實(shi)(shi)現(xian)了(le)全部國(guo)(guo)產(chan)(chan)(chan)(chan)化。但西(xi)(xi)(xi)氣(qi)東(dong)輸二線基(ji)(ji)于(yu)(yu)(yu)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)設計的(de)X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)沒(mei)有(you)實(shi)(shi)現(xian)國(guo)(guo)產(chan)(chan)(chan)(chan)化，全部采用的(de)日本進(jin)口X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)。為了(le)解決這一(yi)難題(ti)，在(zai)《西(xi)(xi)(xi)氣(qi)東(dong)輸二線工(gong)(gong)程(cheng)關鍵(jian)技(ji)術研(yan)(yan)究(jiu)(jiu)》重(zhong)(zhong)大(da)(da)專(zhuan)項二期研(yan)(yan)究(jiu)(jiu)中(zhong)(zhong)(zhong)(zhong)，把(ba)大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(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)(kai)(kai)展(zhan)研(yan)(yan)究(jiu)(jiu)。經過(guo)重(zhong)(zhong)大(da)(da)專(zhuan)項參加的(de)各(ge)鋼(gang)(gang)(gang)(gang)廠和(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)廠的(de)通力合作，X70、X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)研(yan)(yan)究(jiu)(jiu)成(cheng)功(gong)。X70大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)于(yu)(yu)(yu)2011年9月通過(guo)了(le)中(zhong)(zhong)(zhong)(zhong)國(guo)(guo)石油天然氣(qi)集團公(gong)(gong)司(si)和(he)中(zhong)(zhong)(zhong)(zhong)國(guo)(guo)鋼(gang)(gang)(gang)(gang)鐵(tie)工(gong)(gong)業(ye)協會在(zai)北(bei)京組織(zhi)(zhi)的(de)鑒定。X70大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)成(cheng)功(gong)應(ying)(ying)(ying)(ying)(ying)用于(yu)(yu)(yu)中(zhong)(zhong)(zhong)(zhong)緬管(guan)(guan)(guan)(guan)道，由(you)渤海裝備(bei)所屬巨龍(long)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)、寶鋼(gang)(gang)(gang)(gang)股(gu)份有(you)限(xian)公(gong)(gong)司(si)和(he)寶雞(ji)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)所屬中(zhong)(zhong)(zhong)(zhong)油寶世順(shun)（秦皇島）鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)有(you)限(xian)公(gong)(gong)司(si)供(gong)(gong)(gong)應(ying)(ying)(ying)(ying)(ying)X70大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)共計4萬多噸，實(shi)(shi)現(xian)了(le)全面(mian)國(guo)(guo)產(chan)(chan)(chan)(chan)化，填補(bu)了(le)中(zhong)(zhong)(zhong)(zhong)國(guo)(guo)X70大(da)(da)變(bian)(bian)(bian)(bian)(bian)形(xing)焊管(guan)(guan)(guan)(guan)制(zhi)(zhi)造空白(bai)。由(you)鞍鋼(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)供(gong)(gong)(gong)應(ying)(ying)(ying)(ying)(ying)鋼(gang)(gang)(gang)(gang)板，巨龍(long)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)和(he)寶世順(shun)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)研(yan)(yan)制(zhi)(zhi)的(de)X80完(wan)成(cheng)了(le)千(qian)噸級試生(sheng)產(chan)(chan)(chan)(chan)，并(bing)(bing)于(yu)(yu)(yu)2012年11月通過(guo)了(le)中(zhong)(zhong)(zhong)(zhong)國(guo)(guo)石油天然氣(qi)集團公(gong)(gong)司(si)在(zai)北(bei)京組織(zhi)(zhi)的(de)鑒定。標志著中(zhong)(zhong)(zhong)(zhong)國(guo)(guo)X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)具備(bei)了(le)批量(liang)生(sheng)產(chan)(chan)(chan)(chan)能力。2012年，中(zhong)(zhong)(zhong)(zhong)油寶世順(shun)（秦皇島）鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)有(you)限(xian)公(gong)(gong)司(si)和(he)巨龍(long)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)(gong)司(si)為西(xi)(xi)(xi)氣(qi)東(dong)輸三線供(gong)(gong)(gong)應(ying)(ying)(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)焊管(guan)(guan)(guan)(guan)，填補(bu)了(le)中(zhong)(zhong)(zhong)(zhong)國(guo)(guo)X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)焊管(guan)(guan)(guan)(guan)制(zhi)(zhi)造空白(bai)。

  我國鋼管(guan)(guan)(guan)(guan)(guan)廠家也在(zai)開發高(gao)寒地區K60和K65（X80）用(yong)管(guan)(guan)(guan)(guan)(guan)線鋼管(guan)(guan)(guan)(guan)(guan)，并且取得了重大進(jin)展(zhan)。鋼管(guan)(guan)(guan)(guan)(guan)的(de)(de)低溫(wen)韌(ren)性和應變性能(neng)均比(bi)較理(li)想。正在(zai)進(jin)行進(jin)一(yi)步的(de)(de)開發。2006年(nian)原華北石油(you)第一(yi)機械廠巨龍(long)鋼管(guan)(guan)(guan)(guan)(guan)首次開發符合俄羅斯標準的(de)(de)輸送鋼管(guan)(guan)(guan)(guan)(guan)K60材質(zhi)直縫(feng)埋(mai)弧焊(han)(han)鋼管(guan)(guan)(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年(nian)，渤(bo)海裝備所屬巨龍(long)鋼管(guan)(guan)(guan)(guan)(guan)公司(si)研制成功了耐低溫(wen)K60直縫(feng)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)、彎管(guan)(guan)(guan)(guan)(guan)和管(guan)(guan)(guan)(guan)(guan)件，并為中(zhong)俄原油(you)管(guan)(guan)(guan)(guan)(guan)道(dao)（二期）供貨彎管(guan)(guan)(guan)(guan)(guan)Φ1220mm×33mm（36根(gen)）、φ1220mm×26.4mm（2根(gen)）。巨龍(long)鋼管(guan)(guan)(guan)(guan)(guan)公司(si)研制生產的(de)(de)站場低溫(wen)環境(jing)（-45℃）用(yong)φ1422mm×30.8mm X80直縫(feng)埋(mai)弧焊(han)(han)鋼管(guan)(guan)(guan)(guan)(guan)、站場低溫(wen)環境(jing)（-45℃）用(yong)φ1422mm×33.8mm X80感應加熱彎管(guan)(guan)(guan)(guan)(guan)、站場低溫(wen)環境(jing)（-45℃）用(yong)φ1422mm×1219×80三通于2018年(nian)11月，在(zai)集(ji)團公司(si)進(jin)行鑒定，目(mu)前(qian)具備批量生產能(neng)力。該(gai)系(xi)列產品可(ke)實現-45℃環境(jing)下的(de)(de)裸(luo)露服役，從而(er)節省大量因保(bao)溫(wen)伴熱措施導致的(de)(de)建(jian)設與(yu)維護費用(yong)。該(gai)系(xi)列產品代表著當(dang)前(qian)國內油(you)氣(qi)輸送鋼管(guan)(guan)(guan)(guan)(guan)最高(gao)水平，填(tian)補了國內空(kong)白。

  國內(nei)酸(suan)(suan)性(xing)服役(yi)環境(jing)用(yong)(yong)(yong)高(gao)等(deng)(deng)(deng)級焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)起步晚，但(dan)進步很快。耐腐蝕管(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)是輸(shu)送酸(suan)(suan)性(xing)天然氣管(guan)(guan)(guan)(guan)線(xian)(xian)的(de)(de)重要(yao)(yao)(yao)用(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)，是目前管(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)中(zhong)(zhong)(zhong)要(yao)(yao)(yao)求(qiu)最為(wei)嚴格(ge)、技術水(shui)平要(yao)(yao)(yao)求(qiu)最高(gao)的(de)(de)鋼(gang)(gang)(gang)(gang)種(zhong)，是管(guan)(guan)(guan)(guan)道用(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)系列的(de)(de)一個重要(yao)(yao)(yao)組成(cheng)部分，是當代冶金(jin)技術和(he)(he)(he)裝(zhuang)備水(shui)平完美(mei)結合的(de)(de)典型產(chan)(chan)(chan)品。國內(nei)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)企業和(he)(he)(he)冶金(jin)企業聯合攻關(guan)，在冶煉純凈化、連鑄低倍(bei)控制、板(ban)材(cai)TMCP控制及耐酸(suan)(suan)焊(han)(han)(han)(han)(han)(han)(han)材(cai)開(kai)發(fa)(fa)(fa)等(deng)(deng)(deng)方(fang)面取得(de)巨大(da)(da)(da)成(cheng)就。從鋼(gang)(gang)(gang)(gang)級來(lai)看，從主要(yao)(yao)(yao)供(gong)應集(ji)輸(shu)的(de)(de)小直(zhi)徑(jing)X52MS逐漸發(fa)(fa)(fa)展到(dao)大(da)(da)(da)直(zhi)徑(jing)長距離外輸(shu)用(yong)(yong)(yong)X65MS，X70MS也(ye)有(you)研(yan)發(fa)(fa)(fa)業績；從管(guan)(guan)(guan)(guan)型來(lai)看，從小口徑(jing)無縫、HFW焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)發(fa)(fa)(fa)展到(dao)大(da)(da)(da)口徑(jing)埋弧(hu)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)；從制管(guan)(guan)(guan)(guan)采(cai)(cai)用(yong)(yong)(yong)的(de)(de)原(yuan)材(cai)料看，不僅有(you)螺(luo)旋管(guan)(guan)(guan)(guan)和(he)(he)(he)HFW焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)需要(yao)(yao)(yao)的(de)(de)熱(re)軋卷板(ban)，也(ye)有(you)滿足(zu)大(da)(da)(da)口徑(jing)直(zhi)縫焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)的(de)(de)寬厚板(ban)；從供(gong)應市(shi)場來(lai)看，不僅滿足(zu)國內(nei)中(zhong)(zhong)(zhong)石油(you)(you)、中(zhong)(zhong)(zhong)石化、中(zhong)(zhong)(zhong)海油(you)(you)等(deng)(deng)(deng)需求(qiu)發(fa)(fa)(fa)展，高(gao)等(deng)(deng)(deng)級酸(suan)(suan)性(xing)環境(jing)用(yong)(yong)(yong)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)還批量(liang)出口到(dao)中(zhong)(zhong)(zhong)東、中(zhong)(zhong)(zhong)亞(ya)和(he)(he)(he)北美(mei)等(deng)(deng)(deng)國家和(he)(he)(he)地區；典型管(guan)(guan)(guan)(guan)廠有(you)寶鋼(gang)(gang)(gang)(gang)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)部、渤海裝(zhuang)備、寶雞鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、珠江鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)等(deng)(deng)(deng)企業，典型工(gong)程如(ru)2004年(nian)全部采(cai)(cai)用(yong)(yong)(yong)國產(chan)(chan)(chan)X65MS直(zhi)縫埋弧(hu)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)的(de)(de)忠-武輸(shu)氣管(guan)(guan)(guan)(guan)線(xian)(xian)工(gong)程，2015年(nian)寶鋼(gang)(gang)(gang)(gang)獨家供(gong)應2.68萬(wan)噸(dun)(dun)(dun)X65MS直(zhi)縫埋弧(hu)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)的(de)(de) BP KHAZZAN 1期項目等(deng)(deng)(deng)。寶鋼(gang)(gang)(gang)(gang)股份有(you)限(xian)公(gong)司截至目前耐酸(suan)(suan)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)共(gong)計生(sheng)產(chan)(chan)(chan)55萬(wan)噸(dun)(dun)(dun)，其中(zhong)(zhong)(zhong)埋弧(hu)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)約50萬(wan)噸(dun)(dun)(dun)，HFW焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)約5萬(wan)噸(dun)(dun)(dun)；珠江鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)生(sheng)產(chan)(chan)(chan)的(de)(de)耐酸(suan)(suan)焊(han)(han)(han)(han)(han)(han)(han)管(guan)(guan)(guan)(guan)累(lei)計超過了10萬(wan)噸(dun)(dun)(dun)；巨龍鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公(gong)司為(wei)土庫曼、長慶油(you)(you)田等(deng)(deng)(deng)供(gong)貨(huo)共(gong)計3.4萬(wan)噸(dun)(dun)(dun)。