大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)技(ji)術(shu)(shu)日(ri)(ri)趨成(cheng)(cheng)熟。雙相(xiang)組織(zhi)(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)的成(cheng)(cheng)功(gong)(gong)開(kai)發(fa)提高(gao)了(le)(le)(le)(le)(le)(le)(le)高(gao)鋼(gang)(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的塑性變(bian)(bian)(bian)(bian)(bian)形能力，降低了(le)(le)(le)(le)(le)(le)(le)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)時效性能，X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)均(jun)已成(cheng)(cheng)功(gong)(gong)開(kai)發(fa)，通過(guo)了(le)(le)(le)(le)(le)(le)(le)新產(chan)(chan)品鑒(jian)(jian)定。我國(guo)(guo)西(xi)(xi)氣(qi)東(dong)輸(shu)(shu)二線(xian)在特(te)殊地段成(cheng)(cheng)功(gong)(gong)采用(yong)(yong)了(le)(le)(le)(le)(le)(le)(le)基于應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)的設計，并(bing)批量(liang)應(ying)(ying)用(yong)(yong)了(le)(le)(le)(le)(le)(le)(le)X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)；在西(xi)(xi)氣(qi)東(dong)輸(shu)(shu)二線(xian)工(gong)程(cheng)(cheng)開(kai)始前(qian)中(zhong)(zhong)石油集(ji)(ji)團公(gong)司(si)(si)(si)(si)(si)為(wei)(wei)滿足工(gong)程(cheng)(cheng)需要，組織(zhi)(zhi)(zhi)國(guo)(guo)內多(duo)個鋼(gang)(gang)(gang)(gang)(gang)廠和(he)制(zhi)管(guan)(guan)(guan)(guan)(guan)廠開(kai)展了(le)(le)(le)(le)(le)(le)(le)《西(xi)(xi)氣(qi)東(dong)輸(shu)(shu)二線(xian)工(gong)程(cheng)(cheng)關鍵技(ji)術(shu)(shu)研(yan)(yan)(yan)究》重大(da)(da)(da)(da)專(zhuan)(zhuan)項(xiang)一(yi)(yi)期研(yan)(yan)(yan)究，先后完(wan)成(cheng)(cheng)了(le)(le)(le)(le)(le)(le)(le)直縫、螺旋和(he)彎管(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)件等產(chan)(chan)品研(yan)(yan)(yan)究，并(bing)實(shi)(shi)現了(le)(le)(le)(le)(le)(le)(le)全部國(guo)(guo)產(chan)(chan)化(hua)。但(dan)西(xi)(xi)氣(qi)東(dong)輸(shu)(shu)二線(xian)基于應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)設計的X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)沒(mei)有(you)(you)實(shi)(shi)現國(guo)(guo)產(chan)(chan)化(hua)，全部采用(yong)(yong)的日(ri)(ri)本進口(kou)X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。為(wei)(wei)了(le)(le)(le)(le)(le)(le)(le)解決這一(yi)(yi)難題，在《西(xi)(xi)氣(qi)東(dong)輸(shu)(shu)二線(xian)工(gong)程(cheng)(cheng)關鍵技(ji)術(shu)(shu)研(yan)(yan)(yan)究》重大(da)(da)(da)(da)專(zhuan)(zhuan)項(xiang)二期研(yan)(yan)(yan)究中(zhong)(zhong)，把大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)作為(wei)(wei)研(yan)(yan)(yan)究重點進一(yi)(yi)步開(kai)展研(yan)(yan)(yan)究。經過(guo)重大(da)(da)(da)(da)專(zhuan)(zhuan)項(xiang)參加的各鋼(gang)(gang)(gang)(gang)(gang)廠和(he)制(zhi)管(guan)(guan)(guan)(guan)(guan)廠的通力合作，X70、X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)研(yan)(yan)(yan)究成(cheng)(cheng)功(gong)(gong)。X70大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)于2011年(nian)9月通過(guo)了(le)(le)(le)(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)石油天然(ran)氣(qi)集(ji)(ji)團公(gong)司(si)(si)(si)(si)(si)和(he)中(zhong)(zhong)國(guo)(guo)鋼(gang)(gang)(gang)(gang)(gang)鐵工(gong)業(ye)協(xie)會在北京組織(zhi)(zhi)(zhi)的鑒(jian)(jian)定。X70大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)成(cheng)(cheng)功(gong)(gong)應(ying)(ying)用(yong)(yong)于中(zhong)(zhong)緬管(guan)(guan)(guan)(guan)(guan)道，由渤海裝(zhuang)備所屬(shu)巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)(si)(si)(si)、寶(bao)鋼(gang)(gang)(gang)(gang)(gang)股份有(you)(you)限公(gong)司(si)(si)(si)(si)(si)和(he)寶(bao)雞鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)所屬(shu)中(zhong)(zhong)油寶(bao)世順（秦皇(huang)(huang)島(dao)）鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)有(you)(you)限公(gong)司(si)(si)(si)(si)(si)供(gong)(gong)應(ying)(ying)X70大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)共計4萬(wan)多(duo)噸，實(shi)(shi)現了(le)(le)(le)(le)(le)(le)(le)全面國(guo)(guo)產(chan)(chan)化(hua)，填補了(le)(le)(le)(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)X70大(da)(da)(da)(da)變(bian)(bian)(bian)(bian)(bian)形焊管(guan)(guan)(guan)(guan)(guan)制(zhi)造空白。由鞍鋼(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)供(gong)(gong)應(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)板(ban)，巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)(si)(si)(si)和(he)寶(bao)世順鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)(si)(si)(si)研(yan)(yan)(yan)制(zhi)的X80完(wan)成(cheng)(cheng)了(le)(le)(le)(le)(le)(le)(le)千(qian)噸級試生(sheng)產(chan)(chan)，并(bing)于2012年(nian)11月通過(guo)了(le)(le)(le)(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)石油天然(ran)氣(qi)集(ji)(ji)團公(gong)司(si)(si)(si)(si)(si)在北京組織(zhi)(zhi)(zhi)的鑒(jian)(jian)定。標志著中(zhong)(zhong)國(guo)(guo)X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)具備了(le)(le)(le)(le)(le)(le)(le)批量(liang)生(sheng)產(chan)(chan)能力。2012年(nian)，中(zhong)(zhong)油寶(bao)世順（秦皇(huang)(huang)島(dao)）鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)有(you)(you)限公(gong)司(si)(si)(si)(si)(si)和(he)巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)公(gong)司(si)(si)(si)(si)(si)為(wei)(wei)西(xi)(xi)氣(qi)東(dong)輸(shu)(shu)三(san)線(xian)供(gong)(gong)應(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)，填補了(le)(le)(le)(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)制(zhi)造空白。

  我(wo)國(guo)鋼(gang)管(guan)(guan)(guan)(guan)廠家也在開發高寒地區K60和K65（X80）用(yong)管(guan)(guan)(guan)(guan)線鋼(gang)管(guan)(guan)(guan)(guan)，并且取得了重大(da)進(jin)展。鋼(gang)管(guan)(guan)(guan)(guan)的低(di)溫韌性和應(ying)變性能(neng)均比(bi)較理想。正在進(jin)行(xing)進(jin)一步的開發。2006年(nian)原華(hua)北石油第一機械廠巨龍鋼(gang)管(guan)(guan)(guan)(guan)首次(ci)開發符合俄(e)羅斯標準的輸送鋼(gang)管(guan)(guan)(guan)(guan)K60材質直(zhi)縫(feng)埋弧焊(han)鋼(gang)管(guan)(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年(nian)，渤海裝備(bei)所屬巨龍鋼(gang)管(guan)(guan)(guan)(guan)公司(si)(si)研制成(cheng)功了耐(nai)低(di)溫K60直(zhi)縫(feng)焊(han)管(guan)(guan)(guan)(guan)、彎管(guan)(guan)(guan)(guan)和管(guan)(guan)(guan)(guan)件，并為(wei)中俄(e)原油管(guan)(guan)(guan)(guan)道（二期(qi)）供貨彎管(guan)(guan)(guan)(guan)Φ1220mm×33mm（36根）、φ1220mm×26.4mm（2根）。巨龍鋼(gang)管(guan)(guan)(guan)(guan)公司(si)(si)研制生產(chan)的站(zhan)場(chang)(chang)低(di)溫環(huan)境(jing)(jing)（-45℃）用(yong)φ1422mm×30.8mm X80直(zhi)縫(feng)埋弧焊(han)鋼(gang)管(guan)(guan)(guan)(guan)、站(zhan)場(chang)(chang)低(di)溫環(huan)境(jing)(jing)（-45℃）用(yong)φ1422mm×33.8mm X80感(gan)應(ying)加(jia)熱彎管(guan)(guan)(guan)(guan)、站(zhan)場(chang)(chang)低(di)溫環(huan)境(jing)(jing)（-45℃）用(yong)φ1422mm×1219×80三通于2018年(nian)11月，在集(ji)團公司(si)(si)進(jin)行(xing)鑒(jian)定，目前(qian)具備(bei)批量生產(chan)能(neng)力。該系列(lie)產(chan)品可實現-45℃環(huan)境(jing)(jing)下的裸露(lu)服役，從而節省大(da)量因保(bao)溫伴熱措施(shi)導致的建設與維(wei)護費(fei)用(yong)。該系列(lie)產(chan)品代表著當前(qian)國(guo)內(nei)油氣輸送鋼(gang)管(guan)(guan)(guan)(guan)最高水(shui)平，填補了國(guo)內(nei)空白。

  國(guo)內酸(suan)(suan)性服役環(huan)境(jing)(jing)用(yong)(yong)高(gao)等(deng)(deng)級(ji)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)起步晚，但進步很(hen)快。耐(nai)腐蝕管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)是輸(shu)送酸(suan)(suan)性天(tian)然氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)的(de)重(zhong)要用(yong)(yong)鋼(gang)(gang)，是目(mu)前(qian)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)中(zhong)(zhong)要求(qiu)最(zui)為嚴格、技(ji)術水平要求(qiu)最(zui)高(gao)的(de)鋼(gang)(gang)種，是管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道用(yong)(yong)鋼(gang)(gang)系列的(de)一個重(zhong)要組成部(bu)分，是當代(dai)冶金技(ji)術和(he)(he)(he)裝(zhuang)備(bei)水平完美(mei)(mei)結合的(de)典型產(chan)品。國(guo)內焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)企(qi)業(ye)(ye)和(he)(he)(he)冶金企(qi)業(ye)(ye)聯合攻關(guan)，在冶煉純(chun)凈化、連鑄低(di)倍控(kong)制、板材TMCP控(kong)制及耐(nai)酸(suan)(suan)焊(han)(han)(han)材開發(fa)(fa)等(deng)(deng)方面取得(de)巨大成就。從(cong)鋼(gang)(gang)級(ji)來看，從(cong)主要供(gong)應(ying)集(ji)輸(shu)的(de)小(xiao)直徑X52MS逐漸發(fa)(fa)展到大直徑長距離外輸(shu)用(yong)(yong)X65MS，X70MS也(ye)有(you)研發(fa)(fa)業(ye)(ye)績(ji)；從(cong)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)型來看，從(cong)小(xiao)口(kou)徑無(wu)縫(feng)、HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)發(fa)(fa)展到大口(kou)徑埋(mai)弧(hu)(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)；從(cong)制管(guan)(guan)(guan)(guan)(guan)(guan)(guan)采用(yong)(yong)的(de)原材料看，不(bu)(bu)僅(jin)有(you)螺旋(xuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)(he)(he)HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)需(xu)要的(de)熱軋卷板，也(ye)有(you)滿足大口(kou)徑直縫(feng)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)寬厚(hou)板；從(cong)供(gong)應(ying)市場(chang)來看，不(bu)(bu)僅(jin)滿足國(guo)內中(zhong)(zhong)石油、中(zhong)(zhong)石化、中(zhong)(zhong)海(hai)油等(deng)(deng)需(xu)求(qiu)發(fa)(fa)展，高(gao)等(deng)(deng)級(ji)酸(suan)(suan)性環(huan)境(jing)(jing)用(yong)(yong)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)還批量出口(kou)到中(zhong)(zhong)東、中(zhong)(zhong)亞和(he)(he)(he)北美(mei)(mei)等(deng)(deng)國(guo)家(jia)和(he)(he)(he)地區；典型管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠有(you)寶(bao)(bao)鋼(gang)(gang)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)部(bu)、渤海(hai)裝(zhuang)備(bei)、寶(bao)(bao)雞(ji)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、珠江鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)(deng)企(qi)業(ye)(ye)，典型工程(cheng)如2004年全部(bu)采用(yong)(yong)國(guo)產(chan)X65MS直縫(feng)埋(mai)弧(hu)(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)忠(zhong)-武輸(shu)氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)工程(cheng)，2015年寶(bao)(bao)鋼(gang)(gang)獨家(jia)供(gong)應(ying)2.68萬噸(dun)(dun)X65MS直縫(feng)埋(mai)弧(hu)(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de) BP KHAZZAN 1期(qi)項目(mu)等(deng)(deng)。寶(bao)(bao)鋼(gang)(gang)股份有(you)限公司截至目(mu)前(qian)耐(nai)酸(suan)(suan)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)共計(ji)(ji)生產(chan)55萬噸(dun)(dun)，其(qi)中(zhong)(zhong)埋(mai)弧(hu)(hu)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)約50萬噸(dun)(dun)，HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)約5萬噸(dun)(dun)；珠江鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)生產(chan)的(de)耐(nai)酸(suan)(suan)焊(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)累(lei)計(ji)(ji)超過了(le)10萬噸(dun)(dun)；巨龍鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司為土庫曼(man)、長慶油田等(deng)(deng)供(gong)貨(huo)共計(ji)(ji)3.4萬噸(dun)(dun)。