大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)技(ji)(ji)術(shu)日(ri)(ri)趨成(cheng)(cheng)熟(shu)。雙相(xiang)組(zu)(zu)(zu)織管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)的(de)成(cheng)(cheng)功(gong)(gong)開(kai)(kai)發(fa)提高了高鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)塑性變(bian)(bian)(bian)形(xing)能力(li)，降(jiang)低了應(ying)(ying)(ying)變(bian)(bian)(bian)時效性能，X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)均已成(cheng)(cheng)功(gong)(gong)開(kai)(kai)發(fa)，通過(guo)了新(xin)產(chan)(chan)品(pin)鑒(jian)定(ding)。我國(guo)(guo)西(xi)(xi)氣(qi)(qi)(qi)東輸(shu)二(er)(er)(er)線(xian)(xian)在(zai)(zai)特殊地段成(cheng)(cheng)功(gong)(gong)采用了基于(yu)(yu)應(ying)(ying)(ying)變(bian)(bian)(bian)的(de)設計(ji)，并(bing)批量(liang)應(ying)(ying)(ying)用了X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；在(zai)(zai)西(xi)(xi)氣(qi)(qi)(qi)東輸(shu)二(er)(er)(er)線(xian)(xian)工(gong)(gong)程(cheng)開(kai)(kai)始前中(zhong)(zhong)(zhong)石(shi)油(you)集(ji)團公司(si)(si)(si)為滿足工(gong)(gong)程(cheng)需要，組(zu)(zu)(zu)織國(guo)(guo)內多(duo)(duo)個鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠(chang)和(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)開(kai)(kai)展了《西(xi)(xi)氣(qi)(qi)(qi)東輸(shu)二(er)(er)(er)線(xian)(xian)工(gong)(gong)程(cheng)關(guan)鍵(jian)技(ji)(ji)術(shu)研(yan)(yan)(yan)究(jiu)》重大(da)(da)(da)(da)(da)(da)專(zhuan)項一期研(yan)(yan)(yan)究(jiu)，先(xian)后(hou)完(wan)成(cheng)(cheng)了直(zhi)縫、螺旋(xuan)和(he)彎(wan)管(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)件等產(chan)(chan)品(pin)研(yan)(yan)(yan)究(jiu)，并(bing)實現(xian)(xian)了全部國(guo)(guo)產(chan)(chan)化(hua)。但西(xi)(xi)氣(qi)(qi)(qi)東輸(shu)二(er)(er)(er)線(xian)(xian)基于(yu)(yu)應(ying)(ying)(ying)變(bian)(bian)(bian)設計(ji)的(de)X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)沒有(you)實現(xian)(xian)國(guo)(guo)產(chan)(chan)化(hua)，全部采用的(de)日(ri)(ri)本進口X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)。為了解(jie)決這一難題(ti)，在(zai)(zai)《西(xi)(xi)氣(qi)(qi)(qi)東輸(shu)二(er)(er)(er)線(xian)(xian)工(gong)(gong)程(cheng)關(guan)鍵(jian)技(ji)(ji)術(shu)研(yan)(yan)(yan)究(jiu)》重大(da)(da)(da)(da)(da)(da)專(zhuan)項二(er)(er)(er)期研(yan)(yan)(yan)究(jiu)中(zhong)(zhong)(zhong)，把大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)作為研(yan)(yan)(yan)究(jiu)重點進一步開(kai)(kai)展研(yan)(yan)(yan)究(jiu)。經過(guo)重大(da)(da)(da)(da)(da)(da)專(zhuan)項參加的(de)各鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠(chang)和(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)的(de)通力(li)合作，X70、X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)研(yan)(yan)(yan)究(jiu)成(cheng)(cheng)功(gong)(gong)。X70大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)于(yu)(yu)2011年9月通過(guo)了中(zhong)(zhong)(zhong)國(guo)(guo)石(shi)油(you)天(tian)然氣(qi)(qi)(qi)集(ji)團公司(si)(si)(si)和(he)中(zhong)(zhong)(zhong)國(guo)(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)鐵(tie)工(gong)(gong)業協會在(zai)(zai)北京組(zu)(zu)(zu)織的(de)鑒(jian)定(ding)。X70大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)成(cheng)(cheng)功(gong)(gong)應(ying)(ying)(ying)用于(yu)(yu)中(zhong)(zhong)(zhong)緬(mian)管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)，由渤海裝(zhuang)備所屬巨(ju)(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公司(si)(si)(si)、寶鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)股(gu)份有(you)限(xian)公司(si)(si)(si)和(he)寶雞鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)所屬中(zhong)(zhong)(zhong)油(you)寶世(shi)順(shun)（秦皇(huang)島）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)有(you)限(xian)公司(si)(si)(si)供(gong)應(ying)(ying)(ying)X70大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)共計(ji)4萬多(duo)(duo)噸，實現(xian)(xian)了全面(mian)國(guo)(guo)產(chan)(chan)化(hua)，填(tian)補(bu)了中(zhong)(zhong)(zhong)國(guo)(guo)X70大(da)(da)(da)(da)(da)(da)變(bian)(bian)(bian)形(xing)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造(zao)空(kong)白(bai)。由鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)供(gong)應(ying)(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)板，巨(ju)(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公司(si)(si)(si)和(he)寶世(shi)順(shun)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公司(si)(si)(si)研(yan)(yan)(yan)制(zhi)(zhi)的(de)X80完(wan)成(cheng)(cheng)了千噸級試生產(chan)(chan)，并(bing)于(yu)(yu)2012年11月通過(guo)了中(zhong)(zhong)(zhong)國(guo)(guo)石(shi)油(you)天(tian)然氣(qi)(qi)(qi)集(ji)團公司(si)(si)(si)在(zai)(zai)北京組(zu)(zu)(zu)織的(de)鑒(jian)定(ding)。標(biao)志著中(zhong)(zhong)(zhong)國(guo)(guo)X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)具備了批量(liang)生產(chan)(chan)能力(li)。2012年，中(zhong)(zhong)(zhong)油(you)寶世(shi)順(shun)（秦皇(huang)島）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)有(you)限(xian)公司(si)(si)(si)和(he)巨(ju)(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公司(si)(si)(si)為西(xi)(xi)氣(qi)(qi)(qi)東輸(shu)三(san)線(xian)(xian)供(gong)應(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)，填(tian)補(bu)了中(zhong)(zhong)(zhong)國(guo)(guo)X80大(da)(da)(da)(da)(da)(da)應(ying)(ying)(ying)變(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造(zao)空(kong)白(bai)。

  我國(guo)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)家也(ye)在(zai)開發高寒地區K60和K65（X80）用(yong)(yong)(yong)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)，并(bing)且(qie)取得了(le)重大(da)進(jin)展。鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)低(di)溫(wen)韌性(xing)和應(ying)變性(xing)能均(jun)比(bi)較理想(xiang)。正在(zai)進(jin)行進(jin)一(yi)步的(de)開發。2006年(nian)原華北石油(you)第一(yi)機械廠(chang)巨龍鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)首(shou)次開發符合(he)俄羅斯(si)標準的(de)輸送(song)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)K60材(cai)質直(zhi)(zhi)縫埋(mai)弧焊鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年(nian)，渤海裝備所屬巨龍鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)研制成功了(le)耐(nai)低(di)溫(wen)K60直(zhi)(zhi)縫焊管(guan)(guan)(guan)(guan)(guan)(guan)、彎(wan)管(guan)(guan)(guan)(guan)(guan)(guan)和管(guan)(guan)(guan)(guan)(guan)(guan)件，并(bing)為中俄原油(you)管(guan)(guan)(guan)(guan)(guan)(guan)道（二期）供(gong)貨彎(wan)管(guan)(guan)(guan)(guan)(guan)(guan)Φ1220mm×33mm（36根）、φ1220mm×26.4mm（2根）。巨龍鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)研制生(sheng)產(chan)的(de)站(zhan)場低(di)溫(wen)環(huan)境(jing)(jing)（-45℃）用(yong)(yong)(yong)φ1422mm×30.8mm X80直(zhi)(zhi)縫埋(mai)弧焊鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、站(zhan)場低(di)溫(wen)環(huan)境(jing)(jing)（-45℃）用(yong)(yong)(yong)φ1422mm×33.8mm X80感應(ying)加熱彎(wan)管(guan)(guan)(guan)(guan)(guan)(guan)、站(zhan)場低(di)溫(wen)環(huan)境(jing)(jing)（-45℃）用(yong)(yong)(yong)φ1422mm×1219×80三通于2018年(nian)11月，在(zai)集(ji)團(tuan)公(gong)司(si)進(jin)行鑒定，目前具備批量生(sheng)產(chan)能力。該系(xi)列產(chan)品(pin)可實現(xian)-45℃環(huan)境(jing)(jing)下(xia)的(de)裸露(lu)服(fu)役，從而節省(sheng)大(da)量因保溫(wen)伴熱措施(shi)導致的(de)建設(she)與維護費用(yong)(yong)(yong)。該系(xi)列產(chan)品(pin)代表(biao)著當前國(guo)內(nei)油(you)氣輸送(song)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)最高水平(ping)，填(tian)補(bu)了(le)國(guo)內(nei)空白(bai)。

  國(guo)內酸(suan)(suan)性服役(yi)環境用高等級(ji)(ji)焊管(guan)(guan)(guan)(guan)(guan)(guan)起步(bu)晚(wan)，但進步(bu)很快。耐腐(fu)蝕管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)是輸(shu)送(song)酸(suan)(suan)性天然氣管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)的(de)(de)(de)(de)重要(yao)用鋼(gang)(gang)(gang)，是目前管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)中(zhong)(zhong)要(yao)求最為嚴格(ge)、技(ji)術水(shui)平要(yao)求最高的(de)(de)(de)(de)鋼(gang)(gang)(gang)種，是管(guan)(guan)(guan)(guan)(guan)(guan)道用鋼(gang)(gang)(gang)系列的(de)(de)(de)(de)一個重要(yao)組成部分，是當代冶金技(ji)術和(he)裝備(bei)(bei)水(shui)平完美(mei)結合的(de)(de)(de)(de)典(dian)型(xing)產(chan)(chan)品(pin)。國(guo)內焊管(guan)(guan)(guan)(guan)(guan)(guan)企(qi)業(ye)和(he)冶金企(qi)業(ye)聯(lian)合攻關，在冶煉純凈化(hua)、連鑄(zhu)低(di)倍控制、板材(cai)TMCP控制及耐酸(suan)(suan)焊材(cai)開發等方(fang)面(mian)取得巨大(da)成就。從(cong)鋼(gang)(gang)(gang)級(ji)(ji)來看，從(cong)主要(yao)供(gong)應(ying)集輸(shu)的(de)(de)(de)(de)小直徑X52MS逐漸(jian)發展到大(da)直徑長距離外(wai)輸(shu)用X65MS，X70MS也有研發業(ye)績；從(cong)管(guan)(guan)(guan)(guan)(guan)(guan)型(xing)來看，從(cong)小口徑無(wu)縫、HFW焊管(guan)(guan)(guan)(guan)(guan)(guan)發展到大(da)口徑埋(mai)弧焊管(guan)(guan)(guan)(guan)(guan)(guan)；從(cong)制管(guan)(guan)(guan)(guan)(guan)(guan)采用的(de)(de)(de)(de)原材(cai)料看，不僅(jin)(jin)有螺旋管(guan)(guan)(guan)(guan)(guan)(guan)和(he)HFW焊管(guan)(guan)(guan)(guan)(guan)(guan)需要(yao)的(de)(de)(de)(de)熱軋卷(juan)板，也有滿足大(da)口徑直縫焊管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)寬厚(hou)板；從(cong)供(gong)應(ying)市場來看，不僅(jin)(jin)滿足國(guo)內中(zhong)(zhong)石油(you)(you)、中(zhong)(zhong)石化(hua)、中(zhong)(zhong)海(hai)油(you)(you)等需求發展，高等級(ji)(ji)酸(suan)(suan)性環境用焊管(guan)(guan)(guan)(guan)(guan)(guan)還批量出口到中(zhong)(zhong)東、中(zhong)(zhong)亞和(he)北(bei)美(mei)等國(guo)家和(he)地區；典(dian)型(xing)管(guan)(guan)(guan)(guan)(guan)(guan)廠有寶鋼(gang)(gang)(gang)焊管(guan)(guan)(guan)(guan)(guan)(guan)部、渤海(hai)裝備(bei)(bei)、寶雞鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、珠江(jiang)(jiang)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)等企(qi)業(ye)，典(dian)型(xing)工(gong)程如2004年(nian)(nian)全(quan)部采用國(guo)產(chan)(chan)X65MS直縫埋(mai)弧焊管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)忠(zhong)-武輸(shu)氣管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)工(gong)程，2015年(nian)(nian)寶鋼(gang)(gang)(gang)獨家供(gong)應(ying)2.68萬(wan)噸(dun)X65MS直縫埋(mai)弧焊管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de) BP KHAZZAN 1期項目等。寶鋼(gang)(gang)(gang)股份有限(xian)公(gong)司截至目前耐酸(suan)(suan)焊管(guan)(guan)(guan)(guan)(guan)(guan)共計生產(chan)(chan)55萬(wan)噸(dun)，其中(zhong)(zhong)埋(mai)弧焊管(guan)(guan)(guan)(guan)(guan)(guan)約(yue)50萬(wan)噸(dun)，HFW焊管(guan)(guan)(guan)(guan)(guan)(guan)約(yue)5萬(wan)噸(dun)；珠江(jiang)(jiang)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)生產(chan)(chan)的(de)(de)(de)(de)耐酸(suan)(suan)焊管(guan)(guan)(guan)(guan)(guan)(guan)累(lei)計超過了(le)10萬(wan)噸(dun)；巨龍鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司為土庫曼、長慶油(you)(you)田等供(gong)貨共計3.4萬(wan)噸(dun)。