大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)技術日趨成(cheng)(cheng)(cheng)熟(shu)。雙相組(zu)織管(guan)(guan)(guan)線(xian)(xian)(xian)鋼(gang)(gang)(gang)的(de)(de)(de)成(cheng)(cheng)(cheng)功(gong)開發(fa)提高(gao)了(le)高(gao)鋼(gang)(gang)(gang)級管(guan)(guan)(guan)線(xian)(xian)(xian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)的(de)(de)(de)塑性變(bian)(bian)(bian)(bian)(bian)(bian)形能(neng)力，降低了(le)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)時(shi)效(xiao)性能(neng)，X80大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)均已(yi)成(cheng)(cheng)(cheng)功(gong)開發(fa)，通(tong)過了(le)新產(chan)品鑒定(ding)。我國(guo)西(xi)(xi)氣(qi)(qi)(qi)東(dong)輸(shu)(shu)二(er)(er)線(xian)(xian)(xian)在(zai)特殊地段成(cheng)(cheng)(cheng)功(gong)采用(yong)了(le)基(ji)于應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)的(de)(de)(de)設(she)計，并批量(liang)應(ying)(ying)(ying)用(yong)了(le)X80大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)；在(zai)西(xi)(xi)氣(qi)(qi)(qi)東(dong)輸(shu)(shu)二(er)(er)線(xian)(xian)(xian)工程開始前中(zhong)石(shi)油(you)(you)(you)集(ji)團(tuan)公(gong)(gong)(gong)(gong)司(si)(si)為滿足工程需(xu)要，組(zu)織國(guo)內多個鋼(gang)(gang)(gang)廠和制管(guan)(guan)(guan)廠開展了(le)《西(xi)(xi)氣(qi)(qi)(qi)東(dong)輸(shu)(shu)二(er)(er)線(xian)(xian)(xian)工程關鍵(jian)技術研(yan)(yan)究(jiu)(jiu)》重(zhong)大(da)(da)專(zhuan)項一期研(yan)(yan)究(jiu)(jiu)，先后完成(cheng)(cheng)(cheng)了(le)直縫、螺旋和彎管(guan)(guan)(guan)管(guan)(guan)(guan)件等產(chan)品研(yan)(yan)究(jiu)(jiu)，并實現(xian)了(le)全部(bu)國(guo)產(chan)化(hua)。但西(xi)(xi)氣(qi)(qi)(qi)東(dong)輸(shu)(shu)二(er)(er)線(xian)(xian)(xian)基(ji)于應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)設(she)計的(de)(de)(de)X80大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)沒有實現(xian)國(guo)產(chan)化(hua)，全部(bu)采用(yong)的(de)(de)(de)日本進口(kou)X80大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)。為了(le)解決(jue)這一難題，在(zai)《西(xi)(xi)氣(qi)(qi)(qi)東(dong)輸(shu)(shu)二(er)(er)線(xian)(xian)(xian)工程關鍵(jian)技術研(yan)(yan)究(jiu)(jiu)》重(zhong)大(da)(da)專(zhuan)項二(er)(er)期研(yan)(yan)究(jiu)(jiu)中(zhong)，把(ba)大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)作為研(yan)(yan)究(jiu)(jiu)重(zhong)點進一步(bu)開展研(yan)(yan)究(jiu)(jiu)。經過重(zhong)大(da)(da)專(zhuan)項參加的(de)(de)(de)各鋼(gang)(gang)(gang)廠和制管(guan)(guan)(guan)廠的(de)(de)(de)通(tong)力合作，X70、X80大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)研(yan)(yan)究(jiu)(jiu)成(cheng)(cheng)(cheng)功(gong)。X70大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)于2011年9月通(tong)過了(le)中(zhong)國(guo)石(shi)油(you)(you)(you)天(tian)然(ran)(ran)氣(qi)(qi)(qi)集(ji)團(tuan)公(gong)(gong)(gong)(gong)司(si)(si)和中(zhong)國(guo)鋼(gang)(gang)(gang)鐵工業協(xie)會在(zai)北京(jing)組(zu)織的(de)(de)(de)鑒定(ding)。X70大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)成(cheng)(cheng)(cheng)功(gong)應(ying)(ying)(ying)用(yong)于中(zhong)緬(mian)管(guan)(guan)(guan)道，由(you)渤(bo)海裝(zhuang)備所屬巨龍(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)公(gong)(gong)(gong)(gong)司(si)(si)、寶(bao)鋼(gang)(gang)(gang)股(gu)份有限公(gong)(gong)(gong)(gong)司(si)(si)和寶(bao)雞(ji)鋼(gang)(gang)(gang)管(guan)(guan)(guan)所屬中(zhong)油(you)(you)(you)寶(bao)世(shi)(shi)順(shun)（秦皇島(dao)）鋼(gang)(gang)(gang)管(guan)(guan)(guan)有限公(gong)(gong)(gong)(gong)司(si)(si)供(gong)應(ying)(ying)(ying)X70大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)共(gong)計4萬(wan)多噸，實現(xian)了(le)全面國(guo)產(chan)化(hua)，填(tian)補(bu)了(le)中(zhong)國(guo)X70大(da)(da)變(bian)(bian)(bian)(bian)(bian)(bian)形焊管(guan)(guan)(guan)制造(zao)空白(bai)。由(you)鞍鋼(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)供(gong)應(ying)(ying)(ying)鋼(gang)(gang)(gang)板，巨龍(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)公(gong)(gong)(gong)(gong)司(si)(si)和寶(bao)世(shi)(shi)順(shun)鋼(gang)(gang)(gang)管(guan)(guan)(guan)公(gong)(gong)(gong)(gong)司(si)(si)研(yan)(yan)制的(de)(de)(de)X80完成(cheng)(cheng)(cheng)了(le)千噸級試生產(chan)，并于2012年11月通(tong)過了(le)中(zhong)國(guo)石(shi)油(you)(you)(you)天(tian)然(ran)(ran)氣(qi)(qi)(qi)集(ji)團(tuan)公(gong)(gong)(gong)(gong)司(si)(si)在(zai)北京(jing)組(zu)織的(de)(de)(de)鑒定(ding)。標志(zhi)著(zhu)中(zhong)國(guo)X80大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)具(ju)備了(le)批量(liang)生產(chan)能(neng)力。2012年，中(zhong)油(you)(you)(you)寶(bao)世(shi)(shi)順(shun)（秦皇島(dao)）鋼(gang)(gang)(gang)管(guan)(guan)(guan)有限公(gong)(gong)(gong)(gong)司(si)(si)和巨龍(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)公(gong)(gong)(gong)(gong)司(si)(si)為西(xi)(xi)氣(qi)(qi)(qi)東(dong)輸(shu)(shu)三線(xian)(xian)(xian)供(gong)應(ying)(ying)(ying)X80鋼(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)焊管(guan)(guan)(guan)，填(tian)補(bu)了(le)中(zhong)國(guo)X80大(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)(bian)(bian)(bian)焊管(guan)(guan)(guan)制造(zao)空白(bai)。

  我國(guo)(guo)鋼(gang)(gang)管(guan)廠家也在(zai)開發高寒地區K60和K65（X80）用(yong)管(guan)線鋼(gang)(gang)管(guan)，并且取得了重(zhong)大(da)進展。鋼(gang)(gang)管(guan)的低溫(wen)(wen)韌性和應(ying)變性能均(jun)比較理(li)想(xiang)。正在(zai)進行進一步(bu)的開發。2006年原(yuan)華北(bei)石油(you)第一機械廠巨(ju)龍(long)鋼(gang)(gang)管(guan)首次開發符合俄(e)羅斯標(biao)準的輸送(song)鋼(gang)(gang)管(guan)K60材質直縫埋(mai)弧焊(han)鋼(gang)(gang)管(guan)φ1220mmx19／22／24mm，2011年，渤海裝備所屬(shu)巨(ju)龍(long)鋼(gang)(gang)管(guan)公司研制成功了耐(nai)低溫(wen)(wen)K60直縫焊(han)管(guan)、彎管(guan)和管(guan)件，并為中俄(e)原(yuan)油(you)管(guan)道（二期）供貨彎管(guan)Φ1220mm×33mm（36根）、φ1220mm×26.4mm（2根）。巨(ju)龍(long)鋼(gang)(gang)管(guan)公司研制生產的站(zhan)場低溫(wen)(wen)環(huan)境（-45℃）用(yong)φ1422mm×30.8mm X80直縫埋(mai)弧焊(han)鋼(gang)(gang)管(guan)、站(zhan)場低溫(wen)(wen)環(huan)境（-45℃）用(yong)φ1422mm×33.8mm X80感應(ying)加熱彎管(guan)、站(zhan)場低溫(wen)(wen)環(huan)境（-45℃）用(yong)φ1422mm×1219×80三通于2018年11月，在(zai)集團(tuan)公司進行鑒定，目前(qian)具(ju)備批量生產能力。該(gai)系列(lie)產品(pin)可實現-45℃環(huan)境下(xia)的裸露服役，從而節省大(da)量因保溫(wen)(wen)伴熱措施導致的建設與維護費(fei)用(yong)。該(gai)系列(lie)產品(pin)代(dai)表著當前(qian)國(guo)(guo)內油(you)氣輸送(song)鋼(gang)(gang)管(guan)最高水平，填補了國(guo)(guo)內空白(bai)。

  國(guo)(guo)內(nei)酸(suan)(suan)性服役環(huan)境用(yong)(yong)(yong)高等級(ji)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)起(qi)步晚，但進步很快(kuai)。耐腐蝕管(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)是輸(shu)(shu)送酸(suan)(suan)性天然氣管(guan)(guan)(guan)(guan)(guan)線的(de)(de)重要(yao)(yao)用(yong)(yong)(yong)鋼(gang)(gang)(gang)，是目(mu)前管(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)中(zhong)(zhong)(zhong)要(yao)(yao)求最(zui)為(wei)嚴(yan)格、技術水(shui)平要(yao)(yao)求最(zui)高的(de)(de)鋼(gang)(gang)(gang)種，是管(guan)(guan)(guan)(guan)(guan)道用(yong)(yong)(yong)鋼(gang)(gang)(gang)系列的(de)(de)一個重要(yao)(yao)組成部分，是當代(dai)冶金技術和裝備水(shui)平完美(mei)(mei)結(jie)合的(de)(de)典(dian)(dian)型(xing)(xing)產品。國(guo)(guo)內(nei)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)企業(ye)和冶金企業(ye)聯合攻關，在冶煉(lian)純(chun)凈化、連鑄低倍控制、板(ban)材TMCP控制及耐酸(suan)(suan)焊(han)(han)(han)(han)材開發等方(fang)面取得巨(ju)(ju)大(da)(da)(da)成就。從(cong)鋼(gang)(gang)(gang)級(ji)來(lai)(lai)看，從(cong)主要(yao)(yao)供應集輸(shu)(shu)的(de)(de)小直(zhi)(zhi)徑(jing)(jing)X52MS逐(zhu)漸發展(zhan)到大(da)(da)(da)直(zhi)(zhi)徑(jing)(jing)長(chang)距離(li)外(wai)輸(shu)(shu)用(yong)(yong)(yong)X65MS，X70MS也有(you)(you)研發業(ye)績；從(cong)管(guan)(guan)(guan)(guan)(guan)型(xing)(xing)來(lai)(lai)看，從(cong)小口徑(jing)(jing)無縫(feng)(feng)、HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)發展(zhan)到大(da)(da)(da)口徑(jing)(jing)埋弧(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)；從(cong)制管(guan)(guan)(guan)(guan)(guan)采(cai)用(yong)(yong)(yong)的(de)(de)原材料看，不(bu)僅有(you)(you)螺旋管(guan)(guan)(guan)(guan)(guan)和HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)需(xu)要(yao)(yao)的(de)(de)熱軋(ya)卷板(ban)，也有(you)(you)滿(man)(man)足(zu)大(da)(da)(da)口徑(jing)(jing)直(zhi)(zhi)縫(feng)(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de)寬(kuan)厚板(ban)；從(cong)供應市場來(lai)(lai)看，不(bu)僅滿(man)(man)足(zu)國(guo)(guo)內(nei)中(zhong)(zhong)(zhong)石油、中(zhong)(zhong)(zhong)石化、中(zhong)(zhong)(zhong)海油等需(xu)求發展(zhan)，高等級(ji)酸(suan)(suan)性環(huan)境用(yong)(yong)(yong)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)還批量出口到中(zhong)(zhong)(zhong)東、中(zhong)(zhong)(zhong)亞(ya)和北美(mei)(mei)等國(guo)(guo)家(jia)和地區；典(dian)(dian)型(xing)(xing)管(guan)(guan)(guan)(guan)(guan)廠有(you)(you)寶鋼(gang)(gang)(gang)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)部、渤(bo)海裝備、寶雞鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、珠江鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)等企業(ye)，典(dian)(dian)型(xing)(xing)工(gong)程如2004年(nian)全部采(cai)用(yong)(yong)(yong)國(guo)(guo)產X65MS直(zhi)(zhi)縫(feng)(feng)埋弧(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de)忠-武(wu)輸(shu)(shu)氣管(guan)(guan)(guan)(guan)(guan)線工(gong)程，2015年(nian)寶鋼(gang)(gang)(gang)獨(du)家(jia)供應2.68萬(wan)(wan)(wan)噸(dun)(dun)X65MS直(zhi)(zhi)縫(feng)(feng)埋弧(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)(de) BP KHAZZAN 1期項目(mu)等。寶鋼(gang)(gang)(gang)股(gu)份有(you)(you)限(xian)公(gong)司(si)(si)截至目(mu)前耐酸(suan)(suan)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)共計(ji)生產55萬(wan)(wan)(wan)噸(dun)(dun)，其中(zhong)(zhong)(zhong)埋弧(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)約50萬(wan)(wan)(wan)噸(dun)(dun)，HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)約5萬(wan)(wan)(wan)噸(dun)(dun)；珠江鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)生產的(de)(de)耐酸(suan)(suan)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)累計(ji)超過了(le)10萬(wan)(wan)(wan)噸(dun)(dun)；巨(ju)(ju)龍(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)為(wei)土庫(ku)曼、長(chang)慶油田等供貨共計(ji)3.4萬(wan)(wan)(wan)噸(dun)(dun)。