大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)技術日趨(qu)成(cheng)熟。雙相組織(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)的成(cheng)功(gong)開(kai)(kai)發提高(gao)了(le)(le)(le)(le)高(gao)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)級(ji)管(guan)(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)的塑性變(bian)(bian)(bian)形能(neng)力(li)，降低了(le)(le)(le)(le)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)時效性能(neng)，X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)均(jun)已成(cheng)功(gong)開(kai)(kai)發，通過了(le)(le)(le)(le)新產(chan)(chan)品鑒定(ding)。我國(guo)(guo)西(xi)氣(qi)東(dong)(dong)(dong)(dong)輸(shu)(shu)二(er)線在(zai)特殊(shu)地段(duan)成(cheng)功(gong)采(cai)用了(le)(le)(le)(le)基于應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)的設(she)計，并(bing)批(pi)量應(ying)(ying)(ying)(ying)(ying)用了(le)(le)(le)(le)X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；在(zai)西(xi)氣(qi)東(dong)(dong)(dong)(dong)輸(shu)(shu)二(er)線工程開(kai)(kai)始前中(zhong)(zhong)石(shi)油集團(tuan)公(gong)(gong)司(si)(si)為滿足(zu)工程需(xu)要，組織(zhi)國(guo)(guo)內多(duo)個鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠和(he)(he)(he)制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)廠開(kai)(kai)展(zhan)了(le)(le)(le)(le)《西(xi)氣(qi)東(dong)(dong)(dong)(dong)輸(shu)(shu)二(er)線工程關鍵(jian)技術研(yan)究(jiu)(jiu)(jiu)》重大(da)(da)專(zhuan)(zhuan)項(xiang)一期(qi)研(yan)究(jiu)(jiu)(jiu)，先后完成(cheng)了(le)(le)(le)(le)直縫、螺旋(xuan)和(he)(he)(he)彎管(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)件等產(chan)(chan)品研(yan)究(jiu)(jiu)(jiu)，并(bing)實現了(le)(le)(le)(le)全(quan)部國(guo)(guo)產(chan)(chan)化(hua)。但(dan)西(xi)氣(qi)東(dong)(dong)(dong)(dong)輸(shu)(shu)二(er)線基于應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)設(she)計的X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)沒(mei)有(you)(you)實現國(guo)(guo)產(chan)(chan)化(hua)，全(quan)部采(cai)用的日本進口(kou)X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)。為了(le)(le)(le)(le)解決這一難題(ti)，在(zai)《西(xi)氣(qi)東(dong)(dong)(dong)(dong)輸(shu)(shu)二(er)線工程關鍵(jian)技術研(yan)究(jiu)(jiu)(jiu)》重大(da)(da)專(zhuan)(zhuan)項(xiang)二(er)期(qi)研(yan)究(jiu)(jiu)(jiu)中(zhong)(zhong)，把大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)作為研(yan)究(jiu)(jiu)(jiu)重點進一步開(kai)(kai)展(zhan)研(yan)究(jiu)(jiu)(jiu)。經過重大(da)(da)專(zhuan)(zhuan)項(xiang)參加的各鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠和(he)(he)(he)制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)廠的通力(li)合作，X70、X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)研(yan)究(jiu)(jiu)(jiu)成(cheng)功(gong)。X70大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)于2011年9月通過了(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)石(shi)油天然(ran)氣(qi)集團(tuan)公(gong)(gong)司(si)(si)和(he)(he)(he)中(zhong)(zhong)國(guo)(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)鐵工業協(xie)會(hui)在(zai)北(bei)京(jing)組織(zhi)的鑒定(ding)。X70大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)成(cheng)功(gong)應(ying)(ying)(ying)(ying)(ying)用于中(zhong)(zhong)緬管(guan)(guan)(guan)(guan)(guan)(guan)道，由(you)渤(bo)海裝備所(suo)屬(shu)巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)、寶(bao)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)股份有(you)(you)限(xian)公(gong)(gong)司(si)(si)和(he)(he)(he)寶(bao)雞鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)所(suo)屬(shu)中(zhong)(zhong)油寶(bao)世(shi)順（秦(qin)皇島）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)有(you)(you)限(xian)公(gong)(gong)司(si)(si)供(gong)應(ying)(ying)(ying)(ying)(ying)X70大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)共計4萬多(duo)噸，實現了(le)(le)(le)(le)全(quan)面國(guo)(guo)產(chan)(chan)化(hua)，填(tian)補(bu)了(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)X70大(da)(da)變(bian)(bian)(bian)形焊管(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)造空白(bai)。由(you)鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)供(gong)應(ying)(ying)(ying)(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)板，巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)和(he)(he)(he)寶(bao)世(shi)順鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)研(yan)制(zhi)的X80完成(cheng)了(le)(le)(le)(le)千(qian)噸級(ji)試(shi)生(sheng)產(chan)(chan)，并(bing)于2012年11月通過了(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)石(shi)油天然(ran)氣(qi)集團(tuan)公(gong)(gong)司(si)(si)在(zai)北(bei)京(jing)組織(zhi)的鑒定(ding)。標志著中(zhong)(zhong)國(guo)(guo)X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)具備了(le)(le)(le)(le)批(pi)量生(sheng)產(chan)(chan)能(neng)力(li)。2012年，中(zhong)(zhong)油寶(bao)世(shi)順（秦(qin)皇島）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)有(you)(you)限(xian)公(gong)(gong)司(si)(si)和(he)(he)(he)巨(ju)龍(long)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)為西(xi)氣(qi)東(dong)(dong)(dong)(dong)輸(shu)(shu)三線供(gong)應(ying)(ying)(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(gang)級(ji)ф1219mm×26.4mm大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)(guan)，填(tian)補(bu)了(le)(le)(le)(le)中(zhong)(zhong)國(guo)(guo)X80大(da)(da)應(ying)(ying)(ying)(ying)(ying)變(bian)(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)造空白(bai)。

  我(wo)國(guo)鋼(gang)(gang)管(guan)(guan)廠家(jia)也在開發(fa)高(gao)寒地區(qu)K60和(he)K65（X80）用(yong)管(guan)(guan)線鋼(gang)(gang)管(guan)(guan)，并且取(qu)得(de)了重大進展。鋼(gang)(gang)管(guan)(guan)的低(di)(di)溫(wen)韌性(xing)和(he)應變性(xing)能均比(bi)較理想。正在進行進一步的開發(fa)。2006年原華北(bei)石油(you)第(di)一機械廠巨龍鋼(gang)(gang)管(guan)(guan)首次開發(fa)符合俄羅斯標準的輸送鋼(gang)(gang)管(guan)(guan)K60材質直(zhi)縫(feng)埋(mai)弧(hu)焊鋼(gang)(gang)管(guan)(guan)φ1220mmx19／22／24mm，2011年，渤海裝備所屬巨龍鋼(gang)(gang)管(guan)(guan)公司研(yan)制(zhi)成功(gong)了耐(nai)低(di)(di)溫(wen)K60直(zhi)縫(feng)焊管(guan)(guan)、彎管(guan)(guan)和(he)管(guan)(guan)件，并為中俄原油(you)管(guan)(guan)道（二(er)期(qi)）供貨彎管(guan)(guan)Φ1220mm×33mm（36根(gen)）、φ1220mm×26.4mm（2根(gen)）。巨龍鋼(gang)(gang)管(guan)(guan)公司研(yan)制(zhi)生產(chan)的站場低(di)(di)溫(wen)環(huan)境(jing)(jing)（-45℃）用(yong)φ1422mm×30.8mm X80直(zhi)縫(feng)埋(mai)弧(hu)焊鋼(gang)(gang)管(guan)(guan)、站場低(di)(di)溫(wen)環(huan)境(jing)(jing)（-45℃）用(yong)φ1422mm×33.8mm X80感應加熱彎管(guan)(guan)、站場低(di)(di)溫(wen)環(huan)境(jing)(jing)（-45℃）用(yong)φ1422mm×1219×80三通于2018年11月，在集團(tuan)公司進行鑒定，目前(qian)具(ju)備批量生產(chan)能力。該(gai)系列產(chan)品可實現-45℃環(huan)境(jing)(jing)下的裸露服(fu)役，從(cong)而節省大量因保溫(wen)伴熱措施導致的建設與維護費用(yong)。該(gai)系列產(chan)品代表著當前(qian)國(guo)內油(you)氣輸送鋼(gang)(gang)管(guan)(guan)最高(gao)水平，填(tian)補了國(guo)內空(kong)白。

  國(guo)內(nei)酸(suan)(suan)(suan)性(xing)服(fu)役環境用(yong)高(gao)等(deng)(deng)級(ji)焊(han)管(guan)(guan)(guan)(guan)(guan)起步(bu)晚，但(dan)進步(bu)很快。耐腐蝕管(guan)(guan)(guan)(guan)(guan)線鋼(gang)是(shi)(shi)輸(shu)送(song)酸(suan)(suan)(suan)性(xing)天(tian)然(ran)氣(qi)管(guan)(guan)(guan)(guan)(guan)線的(de)重(zhong)要(yao)(yao)用(yong)鋼(gang)，是(shi)(shi)目前管(guan)(guan)(guan)(guan)(guan)線鋼(gang)中(zhong)(zhong)要(yao)(yao)求(qiu)最(zui)為(wei)嚴(yan)格、技術水(shui)平要(yao)(yao)求(qiu)最(zui)高(gao)的(de)鋼(gang)種，是(shi)(shi)管(guan)(guan)(guan)(guan)(guan)道(dao)用(yong)鋼(gang)系列(lie)的(de)一個重(zhong)要(yao)(yao)組(zu)成(cheng)部分，是(shi)(shi)當代冶金技術和(he)(he)裝備水(shui)平完美結合的(de)典型產(chan)(chan)品。國(guo)內(nei)焊(han)管(guan)(guan)(guan)(guan)(guan)企業(ye)和(he)(he)冶金企業(ye)聯合攻關，在(zai)冶煉純凈化、連鑄低倍(bei)控制、板(ban)材(cai)TMCP控制及耐酸(suan)(suan)(suan)焊(han)材(cai)開發(fa)等(deng)(deng)方面(mian)取(qu)得巨大(da)成(cheng)就。從(cong)(cong)(cong)鋼(gang)級(ji)來看(kan)(kan)，從(cong)(cong)(cong)主(zhu)要(yao)(yao)供(gong)(gong)應(ying)集輸(shu)的(de)小(xiao)直(zhi)(zhi)徑X52MS逐漸發(fa)展到大(da)直(zhi)(zhi)徑長(chang)距離外輸(shu)用(yong)X65MS，X70MS也(ye)有研(yan)發(fa)業(ye)績(ji)；從(cong)(cong)(cong)管(guan)(guan)(guan)(guan)(guan)型來看(kan)(kan)，從(cong)(cong)(cong)小(xiao)口(kou)徑無縫(feng)、HFW焊(han)管(guan)(guan)(guan)(guan)(guan)發(fa)展到大(da)口(kou)徑埋弧(hu)焊(han)管(guan)(guan)(guan)(guan)(guan)；從(cong)(cong)(cong)制管(guan)(guan)(guan)(guan)(guan)采(cai)用(yong)的(de)原(yuan)材(cai)料(liao)看(kan)(kan)，不僅有螺旋管(guan)(guan)(guan)(guan)(guan)和(he)(he)HFW焊(han)管(guan)(guan)(guan)(guan)(guan)需(xu)(xu)要(yao)(yao)的(de)熱(re)軋卷(juan)板(ban)，也(ye)有滿足(zu)大(da)口(kou)徑直(zhi)(zhi)縫(feng)焊(han)管(guan)(guan)(guan)(guan)(guan)的(de)寬厚(hou)板(ban)；從(cong)(cong)(cong)供(gong)(gong)應(ying)市場來看(kan)(kan)，不僅滿足(zu)國(guo)內(nei)中(zhong)(zhong)石油、中(zhong)(zhong)石化、中(zhong)(zhong)海油等(deng)(deng)需(xu)(xu)求(qiu)發(fa)展，高(gao)等(deng)(deng)級(ji)酸(suan)(suan)(suan)性(xing)環境用(yong)焊(han)管(guan)(guan)(guan)(guan)(guan)還批量出口(kou)到中(zhong)(zhong)東、中(zhong)(zhong)亞(ya)和(he)(he)北美等(deng)(deng)國(guo)家(jia)和(he)(he)地區(qu)；典型管(guan)(guan)(guan)(guan)(guan)廠有寶(bao)(bao)(bao)鋼(gang)焊(han)管(guan)(guan)(guan)(guan)(guan)部、渤海裝備、寶(bao)(bao)(bao)雞鋼(gang)管(guan)(guan)(guan)(guan)(guan)、珠江鋼(gang)管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)企業(ye)，典型工(gong)(gong)程如2004年(nian)全部采(cai)用(yong)國(guo)產(chan)(chan)X65MS直(zhi)(zhi)縫(feng)埋弧(hu)焊(han)管(guan)(guan)(guan)(guan)(guan)的(de)忠-武輸(shu)氣(qi)管(guan)(guan)(guan)(guan)(guan)線工(gong)(gong)程，2015年(nian)寶(bao)(bao)(bao)鋼(gang)獨家(jia)供(gong)(gong)應(ying)2.68萬噸(dun)X65MS直(zhi)(zhi)縫(feng)埋弧(hu)焊(han)管(guan)(guan)(guan)(guan)(guan)的(de) BP KHAZZAN 1期項目等(deng)(deng)。寶(bao)(bao)(bao)鋼(gang)股份有限(xian)公司截至目前耐酸(suan)(suan)(suan)焊(han)管(guan)(guan)(guan)(guan)(guan)共(gong)計(ji)生(sheng)產(chan)(chan)55萬噸(dun)，其中(zhong)(zhong)埋弧(hu)焊(han)管(guan)(guan)(guan)(guan)(guan)約50萬噸(dun)，HFW焊(han)管(guan)(guan)(guan)(guan)(guan)約5萬噸(dun)；珠江鋼(gang)管(guan)(guan)(guan)(guan)(guan)生(sheng)產(chan)(chan)的(de)耐酸(suan)(suan)(suan)焊(han)管(guan)(guan)(guan)(guan)(guan)累計(ji)超(chao)過了(le)10萬噸(dun)；巨龍(long)鋼(gang)管(guan)(guan)(guan)(guan)(guan)公司為(wei)土庫曼、長(chang)慶油田等(deng)(deng)供(gong)(gong)貨(huo)共(gong)計(ji)3.4萬噸(dun)。