大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)技術日趨成(cheng)(cheng)熟。雙相(xiang)組(zu)織(zhi)管(guan)(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)(gong)開(kai)發(fa)(fa)提高了(le)(le)(le)(le)高鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)塑性變(bian)(bian)(bian)形能力，降低了(le)(le)(le)(le)應(ying)(ying)變(bian)(bian)(bian)時(shi)效性能，X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)均已成(cheng)(cheng)功(gong)(gong)(gong)開(kai)發(fa)(fa)，通(tong)過了(le)(le)(le)(le)新產(chan)(chan)(chan)品(pin)(pin)鑒定。我國(guo)西(xi)(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)(xian)在特殊(shu)地段成(cheng)(cheng)功(gong)(gong)(gong)采用(yong)了(le)(le)(le)(le)基于(yu)應(ying)(ying)變(bian)(bian)(bian)的(de)設計，并(bing)批量(liang)應(ying)(ying)用(yong)了(le)(le)(le)(le)X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)；在西(xi)(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)(xian)工(gong)程(cheng)開(kai)始前中(zhong)(zhong)(zhong)(zhong)石(shi)油(you)集團(tuan)公司(si)為(wei)滿足工(gong)程(cheng)需(xu)要，組(zu)織(zhi)國(guo)內(nei)多個鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠(chang)和(he)制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)開(kai)展了(le)(le)(le)(le)《西(xi)(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)(xian)工(gong)程(cheng)關(guan)鍵技術研(yan)究(jiu)(jiu)(jiu)(jiu)》重大(da)(da)(da)(da)專(zhuan)項(xiang)一(yi)期研(yan)究(jiu)(jiu)(jiu)(jiu)，先后完(wan)成(cheng)(cheng)了(le)(le)(le)(le)直縫(feng)、螺旋和(he)彎管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件等產(chan)(chan)(chan)品(pin)(pin)研(yan)究(jiu)(jiu)(jiu)(jiu)，并(bing)實現(xian)了(le)(le)(le)(le)全(quan)部國(guo)產(chan)(chan)(chan)化(hua)。但西(xi)(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)(xian)基于(yu)應(ying)(ying)變(bian)(bian)(bian)設計的(de)X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)沒有實現(xian)國(guo)產(chan)(chan)(chan)化(hua)，全(quan)部采用(yong)的(de)日本進口X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。為(wei)了(le)(le)(le)(le)解決(jue)這一(yi)難題(ti)，在《西(xi)(xi)氣(qi)(qi)(qi)東(dong)(dong)輸二(er)線(xian)(xian)工(gong)程(cheng)關(guan)鍵技術研(yan)究(jiu)(jiu)(jiu)(jiu)》重大(da)(da)(da)(da)專(zhuan)項(xiang)二(er)期研(yan)究(jiu)(jiu)(jiu)(jiu)中(zhong)(zhong)(zhong)(zhong)，把大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)作(zuo)為(wei)研(yan)究(jiu)(jiu)(jiu)(jiu)重點進一(yi)步開(kai)展研(yan)究(jiu)(jiu)(jiu)(jiu)。經過重大(da)(da)(da)(da)專(zhuan)項(xiang)參加的(de)各鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠(chang)和(he)制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)的(de)通(tong)力合作(zuo)，X70、X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)研(yan)究(jiu)(jiu)(jiu)(jiu)成(cheng)(cheng)功(gong)(gong)(gong)。X70大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)于(yu)2011年(nian)9月(yue)通(tong)過了(le)(le)(le)(le)中(zhong)(zhong)(zhong)(zhong)國(guo)石(shi)油(you)天然氣(qi)(qi)(qi)集團(tuan)公司(si)和(he)中(zhong)(zhong)(zhong)(zhong)國(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)鐵(tie)工(gong)業(ye)協會在北(bei)京組(zu)織(zhi)的(de)鑒定。X70大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)成(cheng)(cheng)功(gong)(gong)(gong)應(ying)(ying)用(yong)于(yu)中(zhong)(zhong)(zhong)(zhong)緬管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)，由渤海裝備(bei)所(suo)屬巨(ju)龍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)、寶(bao)(bao)(bao)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)股份(fen)有限(xian)公司(si)和(he)寶(bao)(bao)(bao)雞鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)所(suo)屬中(zhong)(zhong)(zhong)(zhong)油(you)寶(bao)(bao)(bao)世順(shun)（秦(qin)皇(huang)島）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有限(xian)公司(si)供(gong)(gong)應(ying)(ying)X70大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)共計4萬多噸，實現(xian)了(le)(le)(le)(le)全(quan)面(mian)國(guo)產(chan)(chan)(chan)化(hua)，填(tian)補(bu)(bu)了(le)(le)(le)(le)中(zhong)(zhong)(zhong)(zhong)國(guo)X70大(da)(da)(da)(da)變(bian)(bian)(bian)形焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)造空白(bai)。由鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)供(gong)(gong)應(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)板(ban)，巨(ju)龍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)和(he)寶(bao)(bao)(bao)世順(shun)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)研(yan)制(zhi)的(de)X80完(wan)成(cheng)(cheng)了(le)(le)(le)(le)千噸級試生產(chan)(chan)(chan)，并(bing)于(yu)2012年(nian)11月(yue)通(tong)過了(le)(le)(le)(le)中(zhong)(zhong)(zhong)(zhong)國(guo)石(shi)油(you)天然氣(qi)(qi)(qi)集團(tuan)公司(si)在北(bei)京組(zu)織(zhi)的(de)鑒定。標志著(zhu)中(zhong)(zhong)(zhong)(zhong)國(guo)X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)具備(bei)了(le)(le)(le)(le)批量(liang)生產(chan)(chan)(chan)能力。2012年(nian)，中(zhong)(zhong)(zhong)(zhong)油(you)寶(bao)(bao)(bao)世順(shun)（秦(qin)皇(huang)島）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有限(xian)公司(si)和(he)巨(ju)龍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)為(wei)西(xi)(xi)氣(qi)(qi)(qi)東(dong)(dong)輸三線(xian)(xian)供(gong)(gong)應(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，填(tian)補(bu)(bu)了(le)(le)(le)(le)中(zhong)(zhong)(zhong)(zhong)國(guo)X80大(da)(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)造空白(bai)。

  我國鋼(gang)(gang)管(guan)(guan)(guan)廠家也在(zai)(zai)(zai)開(kai)發(fa)高寒地(di)區K60和(he)K65（X80）用(yong)(yong)管(guan)(guan)(guan)線鋼(gang)(gang)管(guan)(guan)(guan)，并(bing)且取(qu)得了重大進(jin)展。鋼(gang)(gang)管(guan)(guan)(guan)的(de)低溫(wen)韌性和(he)應變性能均比較理想。正在(zai)(zai)(zai)進(jin)行(xing)進(jin)一步的(de)開(kai)發(fa)。2006年(nian)原(yuan)(yuan)華北石油第一機(ji)械廠巨(ju)(ju)龍(long)鋼(gang)(gang)管(guan)(guan)(guan)首次開(kai)發(fa)符合(he)俄羅斯標準(zhun)的(de)輸(shu)送(song)鋼(gang)(gang)管(guan)(guan)(guan)K60材質直縫埋弧焊(han)(han)(han)鋼(gang)(gang)管(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年(nian)，渤海(hai)裝備(bei)所屬巨(ju)(ju)龍(long)鋼(gang)(gang)管(guan)(guan)(guan)公司(si)研制成功了耐低溫(wen)K60直縫焊(han)(han)(han)管(guan)(guan)(guan)、彎(wan)管(guan)(guan)(guan)和(he)管(guan)(guan)(guan)件(jian)，并(bing)為中(zhong)俄原(yuan)(yuan)油管(guan)(guan)(guan)道（二期）供貨彎(wan)管(guan)(guan)(guan)Φ1220mm×33mm（36根(gen)）、φ1220mm×26.4mm（2根(gen)）。巨(ju)(ju)龍(long)鋼(gang)(gang)管(guan)(guan)(guan)公司(si)研制生(sheng)產(chan)的(de)站(zhan)(zhan)場低溫(wen)環(huan)境(jing)（-45℃）用(yong)(yong)φ1422mm×30.8mm X80直縫埋弧焊(han)(han)(han)鋼(gang)(gang)管(guan)(guan)(guan)、站(zhan)(zhan)場低溫(wen)環(huan)境(jing)（-45℃）用(yong)(yong)φ1422mm×33.8mm X80感應加熱彎(wan)管(guan)(guan)(guan)、站(zhan)(zhan)場低溫(wen)環(huan)境(jing)（-45℃）用(yong)(yong)φ1422mm×1219×80三通于2018年(nian)11月，在(zai)(zai)(zai)集團公司(si)進(jin)行(xing)鑒定，目(mu)前(qian)具(ju)備(bei)批量生(sheng)產(chan)能力。該系列產(chan)品可實現-45℃環(huan)境(jing)下的(de)裸露服(fu)役，從而節省大量因保(bao)溫(wen)伴(ban)熱措施導致的(de)建設與維護費(fei)用(yong)(yong)。該系列產(chan)品代表著當前(qian)國內(nei)油氣輸(shu)送(song)鋼(gang)(gang)管(guan)(guan)(guan)最高水平(ping)，填補(bu)了國內(nei)空白。

  國內(nei)酸(suan)(suan)(suan)性(xing)(xing)服役環(huan)境用(yong)(yong)高(gao)等(deng)(deng)級焊(han)(han)(han)管(guan)(guan)(guan)(guan)起步晚，但進步很快。耐腐蝕管(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)是輸(shu)送(song)酸(suan)(suan)(suan)性(xing)(xing)天然氣(qi)管(guan)(guan)(guan)(guan)線(xian)的(de)(de)(de)(de)(de)(de)重(zhong)要(yao)用(yong)(yong)鋼(gang)(gang)(gang)(gang)，是目(mu)前管(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)中(zhong)要(yao)求最(zui)為(wei)嚴格、技術(shu)(shu)水平(ping)要(yao)求最(zui)高(gao)的(de)(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)種，是管(guan)(guan)(guan)(guan)道用(yong)(yong)鋼(gang)(gang)(gang)(gang)系列的(de)(de)(de)(de)(de)(de)一個重(zhong)要(yao)組成部分，是當代冶(ye)金技術(shu)(shu)和(he)裝備(bei)水平(ping)完美(mei)結合(he)的(de)(de)(de)(de)(de)(de)典(dian)型(xing)產(chan)品。國內(nei)焊(han)(han)(han)管(guan)(guan)(guan)(guan)企業(ye)和(he)冶(ye)金企業(ye)聯合(he)攻關，在冶(ye)煉(lian)純(chun)凈(jing)化、連鑄低倍控制、板(ban)材TMCP控制及耐酸(suan)(suan)(suan)焊(han)(han)(han)材開發等(deng)(deng)方面(mian)取得(de)巨大成就。從(cong)(cong)(cong)鋼(gang)(gang)(gang)(gang)級來看，從(cong)(cong)(cong)主要(yao)供應(ying)集輸(shu)的(de)(de)(de)(de)(de)(de)小(xiao)直(zhi)徑(jing)(jing)X52MS逐(zhu)漸發展(zhan)到大直(zhi)徑(jing)(jing)長距離外輸(shu)用(yong)(yong)X65MS，X70MS也(ye)有(you)(you)研發業(ye)績；從(cong)(cong)(cong)管(guan)(guan)(guan)(guan)型(xing)來看，從(cong)(cong)(cong)小(xiao)口(kou)徑(jing)(jing)無縫(feng)、HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)發展(zhan)到大口(kou)徑(jing)(jing)埋(mai)(mai)弧焊(han)(han)(han)管(guan)(guan)(guan)(guan)；從(cong)(cong)(cong)制管(guan)(guan)(guan)(guan)采(cai)用(yong)(yong)的(de)(de)(de)(de)(de)(de)原材料看，不僅有(you)(you)螺旋(xuan)管(guan)(guan)(guan)(guan)和(he)HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)需要(yao)的(de)(de)(de)(de)(de)(de)熱軋(ya)卷板(ban)，也(ye)有(you)(you)滿足(zu)大口(kou)徑(jing)(jing)直(zhi)縫(feng)焊(han)(han)(han)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)寬厚板(ban)；從(cong)(cong)(cong)供應(ying)市(shi)場來看，不僅滿足(zu)國內(nei)中(zhong)石油(you)(you)、中(zhong)石化、中(zhong)海油(you)(you)等(deng)(deng)需求發展(zhan)，高(gao)等(deng)(deng)級酸(suan)(suan)(suan)性(xing)(xing)環(huan)境用(yong)(yong)焊(han)(han)(han)管(guan)(guan)(guan)(guan)還批量出口(kou)到中(zhong)東、中(zhong)亞和(he)北美(mei)等(deng)(deng)國家和(he)地區(qu)；典(dian)型(xing)管(guan)(guan)(guan)(guan)廠有(you)(you)寶(bao)(bao)鋼(gang)(gang)(gang)(gang)焊(han)(han)(han)管(guan)(guan)(guan)(guan)部、渤海裝備(bei)、寶(bao)(bao)雞鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、珠(zhu)江(jiang)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)等(deng)(deng)企業(ye)，典(dian)型(xing)工程(cheng)如2004年全部采(cai)用(yong)(yong)國產(chan)X65MS直(zhi)縫(feng)埋(mai)(mai)弧焊(han)(han)(han)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)忠-武輸(shu)氣(qi)管(guan)(guan)(guan)(guan)線(xian)工程(cheng)，2015年寶(bao)(bao)鋼(gang)(gang)(gang)(gang)獨家供應(ying)2.68萬噸(dun)(dun)X65MS直(zhi)縫(feng)埋(mai)(mai)弧焊(han)(han)(han)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de) BP KHAZZAN 1期項目(mu)等(deng)(deng)。寶(bao)(bao)鋼(gang)(gang)(gang)(gang)股份有(you)(you)限公司(si)截至目(mu)前耐酸(suan)(suan)(suan)焊(han)(han)(han)管(guan)(guan)(guan)(guan)共計(ji)(ji)生(sheng)產(chan)55萬噸(dun)(dun)，其中(zhong)埋(mai)(mai)弧焊(han)(han)(han)管(guan)(guan)(guan)(guan)約(yue)50萬噸(dun)(dun)，HFW焊(han)(han)(han)管(guan)(guan)(guan)(guan)約(yue)5萬噸(dun)(dun)；珠(zhu)江(jiang)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)生(sheng)產(chan)的(de)(de)(de)(de)(de)(de)耐酸(suan)(suan)(suan)焊(han)(han)(han)管(guan)(guan)(guan)(guan)累計(ji)(ji)超(chao)過了(le)10萬噸(dun)(dun)；巨龍鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)公司(si)為(wei)土庫曼、長慶(qing)油(you)(you)田等(deng)(deng)供貨(huo)共計(ji)(ji)3.4萬噸(dun)(dun)。