大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)技(ji)(ji)術(shu)日趨成(cheng)熟。雙相組(zu)織(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)成(cheng)功開發(fa)提(ti)高了(le)(le)(le)(le)(le)高鋼(gang)(gang)(gang)(gang)(gang)(gang)級(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)塑性(xing)變(bian)(bian)形(xing)能(neng)力，降低了(le)(le)(le)(le)(le)應(ying)(ying)(ying)變(bian)(bian)時效性(xing)能(neng)，X80大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)均已(yi)成(cheng)功開發(fa)，通過(guo)(guo)(guo)了(le)(le)(le)(le)(le)新產(chan)品鑒定。我國(guo)(guo)西(xi)(xi)氣(qi)(qi)東(dong)輸二線(xian)(xian)在(zai)(zai)特殊地段成(cheng)功采(cai)用(yong)了(le)(le)(le)(le)(le)基于(yu)應(ying)(ying)(ying)變(bian)(bian)的(de)(de)設計，并(bing)批(pi)量應(ying)(ying)(ying)用(yong)了(le)(le)(le)(le)(le)X80大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)；在(zai)(zai)西(xi)(xi)氣(qi)(qi)東(dong)輸二線(xian)(xian)工(gong)(gong)程(cheng)開始前中(zhong)(zhong)(zhong)石(shi)油(you)集(ji)團公(gong)(gong)司(si)(si)為(wei)(wei)(wei)滿足工(gong)(gong)程(cheng)需要，組(zu)織(zhi)國(guo)(guo)內多(duo)個鋼(gang)(gang)(gang)(gang)(gang)(gang)廠和(he)(he)制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠開展了(le)(le)(le)(le)(le)《西(xi)(xi)氣(qi)(qi)東(dong)輸二線(xian)(xian)工(gong)(gong)程(cheng)關(guan)鍵技(ji)(ji)術(shu)研究(jiu)》重(zhong)大專項(xiang)一期研究(jiu)，先(xian)后完(wan)(wan)成(cheng)了(le)(le)(le)(le)(le)直(zhi)縫、螺旋和(he)(he)彎管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件(jian)等產(chan)品研究(jiu)，并(bing)實(shi)現了(le)(le)(le)(le)(le)全(quan)部國(guo)(guo)產(chan)化。但西(xi)(xi)氣(qi)(qi)東(dong)輸二線(xian)(xian)基于(yu)應(ying)(ying)(ying)變(bian)(bian)設計的(de)(de)X80大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)沒有實(shi)現國(guo)(guo)產(chan)化，全(quan)部采(cai)用(yong)的(de)(de)日本(ben)進(jin)口X80大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。為(wei)(wei)(wei)了(le)(le)(le)(le)(le)解決這(zhe)一難題，在(zai)(zai)《西(xi)(xi)氣(qi)(qi)東(dong)輸二線(xian)(xian)工(gong)(gong)程(cheng)關(guan)鍵技(ji)(ji)術(shu)研究(jiu)》重(zhong)大專項(xiang)二期研究(jiu)中(zhong)(zhong)(zhong)，把大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)作(zuo)為(wei)(wei)(wei)研究(jiu)重(zhong)點(dian)進(jin)一步開展研究(jiu)。經(jing)過(guo)(guo)(guo)重(zhong)大專項(xiang)參加的(de)(de)各(ge)鋼(gang)(gang)(gang)(gang)(gang)(gang)廠和(he)(he)制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠的(de)(de)通力合作(zuo)，X70、X80大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)研究(jiu)成(cheng)功。X70大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)于(yu)2011年9月(yue)通過(guo)(guo)(guo)了(le)(le)(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)石(shi)油(you)天(tian)然氣(qi)(qi)集(ji)團公(gong)(gong)司(si)(si)和(he)(he)中(zhong)(zhong)(zhong)國(guo)(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)鐵工(gong)(gong)業協會在(zai)(zai)北京組(zu)織(zhi)的(de)(de)鑒定。X70大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)成(cheng)功應(ying)(ying)(ying)用(yong)于(yu)中(zhong)(zhong)(zhong)緬(mian)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)，由渤海(hai)裝(zhuang)備所屬巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)、寶(bao)鋼(gang)(gang)(gang)(gang)(gang)(gang)股份有限(xian)(xian)公(gong)(gong)司(si)(si)和(he)(he)寶(bao)雞(ji)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)所屬中(zhong)(zhong)(zhong)油(you)寶(bao)世(shi)順（秦皇(huang)島）鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有限(xian)(xian)公(gong)(gong)司(si)(si)供應(ying)(ying)(ying)X70大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)共(gong)計4萬多(duo)噸，實(shi)現了(le)(le)(le)(le)(le)全(quan)面國(guo)(guo)產(chan)化，填(tian)補了(le)(le)(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)X70大變(bian)(bian)形(xing)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)造空(kong)白(bai)。由鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)、沙(sha)鋼(gang)(gang)(gang)(gang)(gang)(gang)供應(ying)(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)(gang)板，巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)和(he)(he)寶(bao)世(shi)順鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)研制(zhi)的(de)(de)X80完(wan)(wan)成(cheng)了(le)(le)(le)(le)(le)千噸級(ji)試生產(chan)，并(bing)于(yu)2012年11月(yue)通過(guo)(guo)(guo)了(le)(le)(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)石(shi)油(you)天(tian)然氣(qi)(qi)集(ji)團公(gong)(gong)司(si)(si)在(zai)(zai)北京組(zu)織(zhi)的(de)(de)鑒定。標志著(zhu)中(zhong)(zhong)(zhong)國(guo)(guo)X80大應(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)具備了(le)(le)(le)(le)(le)批(pi)量生產(chan)能(neng)力。2012年，中(zhong)(zhong)(zhong)油(you)寶(bao)世(shi)順（秦皇(huang)島）鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有限(xian)(xian)公(gong)(gong)司(si)(si)和(he)(he)巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)司(si)(si)為(wei)(wei)(wei)西(xi)(xi)氣(qi)(qi)東(dong)輸三線(xian)(xian)供應(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)級(ji)ф1219mm×26.4mm大應(ying)(ying)(ying)變(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，填(tian)補了(le)(le)(le)(le)(le)中(zhong)(zhong)(zhong)國(guo)(guo)X80大應(ying)(ying)(ying)變(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)造空(kong)白(bai)。

  我國鋼(gang)(gang)管(guan)(guan)(guan)(guan)廠家也在開發(fa)高寒地區K60和K65（X80）用管(guan)(guan)(guan)(guan)線鋼(gang)(gang)管(guan)(guan)(guan)(guan)，并(bing)且取得了(le)重大(da)進(jin)(jin)展。鋼(gang)(gang)管(guan)(guan)(guan)(guan)的(de)低(di)溫(wen)韌性(xing)和應變(bian)性(xing)能均比(bi)較理想。正在進(jin)(jin)行進(jin)(jin)一步的(de)開發(fa)。2006年(nian)原(yuan)華(hua)北(bei)石(shi)油第一機械廠巨龍(long)(long)鋼(gang)(gang)管(guan)(guan)(guan)(guan)首次開發(fa)符合俄羅斯(si)標(biao)準的(de)輸送鋼(gang)(gang)管(guan)(guan)(guan)(guan)K60材(cai)質直縫(feng)埋弧焊(han)鋼(gang)(gang)管(guan)(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年(nian)，渤海裝備(bei)所屬(shu)巨龍(long)(long)鋼(gang)(gang)管(guan)(guan)(guan)(guan)公司研(yan)制成(cheng)功了(le)耐(nai)低(di)溫(wen)K60直縫(feng)焊(han)管(guan)(guan)(guan)(guan)、彎(wan)管(guan)(guan)(guan)(guan)和管(guan)(guan)(guan)(guan)件，并(bing)為中俄原(yuan)油管(guan)(guan)(guan)(guan)道(dao)（二期）供貨彎(wan)管(guan)(guan)(guan)(guan)Φ1220mm×33mm（36根）、φ1220mm×26.4mm（2根）。巨龍(long)(long)鋼(gang)(gang)管(guan)(guan)(guan)(guan)公司研(yan)制生(sheng)產(chan)(chan)的(de)站場低(di)溫(wen)環境(jing)(jing)（-45℃）用φ1422mm×30.8mm X80直縫(feng)埋弧焊(han)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、站場低(di)溫(wen)環境(jing)(jing)（-45℃）用φ1422mm×33.8mm X80感應加(jia)熱彎(wan)管(guan)(guan)(guan)(guan)、站場低(di)溫(wen)環境(jing)(jing)（-45℃）用φ1422mm×1219×80三通于2018年(nian)11月(yue)，在集團公司進(jin)(jin)行鑒定，目前具備(bei)批(pi)量(liang)生(sheng)產(chan)(chan)能力。該系列產(chan)(chan)品可實現-45℃環境(jing)(jing)下的(de)裸露服役，從(cong)而節省大(da)量(liang)因保溫(wen)伴(ban)熱措施(shi)導致的(de)建(jian)設與(yu)維護費用。該系列產(chan)(chan)品代(dai)表著當前國內(nei)油氣輸送鋼(gang)(gang)管(guan)(guan)(guan)(guan)最高水平(ping)，填補了(le)國內(nei)空白(bai)。

  國(guo)內酸性服(fu)役環境用(yong)高(gao)(gao)等(deng)級(ji)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)起(qi)步晚，但進步很快。耐腐蝕管(guan)(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)是(shi)(shi)輸(shu)送(song)酸性天然氣管(guan)(guan)(guan)(guan)(guan)(guan)線的(de)(de)(de)(de)重要(yao)用(yong)鋼(gang)(gang)，是(shi)(shi)目前(qian)管(guan)(guan)(guan)(guan)(guan)(guan)線鋼(gang)(gang)中(zhong)要(yao)求最(zui)為(wei)嚴格、技術水(shui)平(ping)(ping)要(yao)求最(zui)高(gao)(gao)的(de)(de)(de)(de)鋼(gang)(gang)種，是(shi)(shi)管(guan)(guan)(guan)(guan)(guan)(guan)道用(yong)鋼(gang)(gang)系(xi)列的(de)(de)(de)(de)一個(ge)重要(yao)組成(cheng)部(bu)分，是(shi)(shi)當代冶金技術和(he)裝(zhuang)備水(shui)平(ping)(ping)完美(mei)結合的(de)(de)(de)(de)典型(xing)產(chan)(chan)品(pin)。國(guo)內焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)企業(ye)和(he)冶金企業(ye)聯合攻關，在冶煉(lian)純凈化、連鑄低(di)倍控制、板材TMCP控制及耐酸焊(han)(han)(han)(han)材開發(fa)等(deng)方面(mian)取得(de)巨大(da)成(cheng)就(jiu)。從鋼(gang)(gang)級(ji)來(lai)看(kan)，從主要(yao)供應(ying)集(ji)輸(shu)的(de)(de)(de)(de)小(xiao)直(zhi)(zhi)(zhi)徑(jing)X52MS逐(zhu)漸發(fa)展到(dao)(dao)大(da)直(zhi)(zhi)(zhi)徑(jing)長距離外輸(shu)用(yong)X65MS，X70MS也有(you)研發(fa)業(ye)績；從管(guan)(guan)(guan)(guan)(guan)(guan)型(xing)來(lai)看(kan)，從小(xiao)口(kou)徑(jing)無縫(feng)、HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)發(fa)展到(dao)(dao)大(da)口(kou)徑(jing)埋(mai)弧(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)；從制管(guan)(guan)(guan)(guan)(guan)(guan)采用(yong)的(de)(de)(de)(de)原材料(liao)看(kan)，不僅有(you)螺旋(xuan)管(guan)(guan)(guan)(guan)(guan)(guan)和(he)HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)需要(yao)的(de)(de)(de)(de)熱(re)軋卷板，也有(you)滿足大(da)口(kou)徑(jing)直(zhi)(zhi)(zhi)縫(feng)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)寬(kuan)厚板；從供應(ying)市場(chang)來(lai)看(kan)，不僅滿足國(guo)內中(zhong)石油、中(zhong)石化、中(zhong)海油等(deng)需求發(fa)展，高(gao)(gao)等(deng)級(ji)酸性環境用(yong)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)還(huan)批量出口(kou)到(dao)(dao)中(zhong)東、中(zhong)亞和(he)北(bei)美(mei)等(deng)國(guo)家和(he)地區；典型(xing)管(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)有(you)寶(bao)鋼(gang)(gang)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)部(bu)、渤海裝(zhuang)備、寶(bao)雞鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、珠江(jiang)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)等(deng)企業(ye)，典型(xing)工(gong)程(cheng)如2004年(nian)全(quan)部(bu)采用(yong)國(guo)產(chan)(chan)X65MS直(zhi)(zhi)(zhi)縫(feng)埋(mai)弧(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)忠-武輸(shu)氣管(guan)(guan)(guan)(guan)(guan)(guan)線工(gong)程(cheng)，2015年(nian)寶(bao)鋼(gang)(gang)獨家供應(ying)2.68萬(wan)噸X65MS直(zhi)(zhi)(zhi)縫(feng)埋(mai)弧(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de) BP KHAZZAN 1期項目等(deng)。寶(bao)鋼(gang)(gang)股份有(you)限公(gong)司截(jie)至目前(qian)耐酸焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)共(gong)(gong)計生產(chan)(chan)55萬(wan)噸，其中(zhong)埋(mai)弧(hu)焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)約50萬(wan)噸，HFW焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)約5萬(wan)噸；珠江(jiang)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)生產(chan)(chan)的(de)(de)(de)(de)耐酸焊(han)(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)累計超過了(le)10萬(wan)噸；巨龍(long)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司為(wei)土庫(ku)曼(man)、長慶油田(tian)等(deng)供貨共(gong)(gong)計3.4萬(wan)噸。