大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)技術(shu)(shu)日趨成(cheng)熟。雙相組(zu)織管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)的(de)成(cheng)功(gong)(gong)(gong)開(kai)(kai)發提高了(le)(le)高鋼(gang)(gang)(gang)(gang)級(ji)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)塑性(xing)變(bian)(bian)(bian)(bian)(bian)形能力(li)(li)，降低了(le)(le)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)時效性(xing)能，X80大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)均已成(cheng)功(gong)(gong)(gong)開(kai)(kai)發，通(tong)過(guo)了(le)(le)新產(chan)品(pin)鑒定。我國(guo)(guo)(guo)西氣(qi)東(dong)輸二(er)(er)(er)線(xian)(xian)在(zai)特殊地(di)段成(cheng)功(gong)(gong)(gong)采用了(le)(le)基于應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)的(de)設計，并批量(liang)應(ying)(ying)用了(le)(le)X80大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)；在(zai)西氣(qi)東(dong)輸二(er)(er)(er)線(xian)(xian)工(gong)程開(kai)(kai)始前中(zhong)(zhong)石(shi)油(you)集團公(gong)(gong)(gong)司(si)為(wei)滿足工(gong)程需要，組(zu)織國(guo)(guo)(guo)內多個(ge)鋼(gang)(gang)(gang)(gang)廠(chang)和(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)開(kai)(kai)展了(le)(le)《西氣(qi)東(dong)輸二(er)(er)(er)線(xian)(xian)工(gong)程關鍵技術(shu)(shu)研(yan)(yan)究》重(zhong)大(da)(da)(da)專(zhuan)項一期研(yan)(yan)究，先后完成(cheng)了(le)(le)直縫、螺旋和(he)彎管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)件等產(chan)品(pin)研(yan)(yan)究，并實(shi)現了(le)(le)全部國(guo)(guo)(guo)產(chan)化。但(dan)西氣(qi)東(dong)輸二(er)(er)(er)線(xian)(xian)基于應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)設計的(de)X80大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)沒有實(shi)現國(guo)(guo)(guo)產(chan)化，全部采用的(de)日本進(jin)口X80大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。為(wei)了(le)(le)解決這一難題，在(zai)《西氣(qi)東(dong)輸二(er)(er)(er)線(xian)(xian)工(gong)程關鍵技術(shu)(shu)研(yan)(yan)究》重(zhong)大(da)(da)(da)專(zhuan)項二(er)(er)(er)期研(yan)(yan)究中(zhong)(zhong)，把大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)作為(wei)研(yan)(yan)究重(zhong)點進(jin)一步(bu)開(kai)(kai)展研(yan)(yan)究。經過(guo)重(zhong)大(da)(da)(da)專(zhuan)項參加的(de)各鋼(gang)(gang)(gang)(gang)廠(chang)和(he)制(zhi)(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)的(de)通(tong)力(li)(li)合作，X70、X80大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)研(yan)(yan)究成(cheng)功(gong)(gong)(gong)。X70大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)于2011年(nian)9月通(tong)過(guo)了(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)石(shi)油(you)天然(ran)氣(qi)集團公(gong)(gong)(gong)司(si)和(he)中(zhong)(zhong)國(guo)(guo)(guo)鋼(gang)(gang)(gang)(gang)鐵(tie)工(gong)業協會在(zai)北京組(zu)織的(de)鑒定。X70大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)成(cheng)功(gong)(gong)(gong)應(ying)(ying)用于中(zhong)(zhong)緬管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)，由渤海裝備所(suo)屬巨龍(long)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)(gong)司(si)、寶(bao)(bao)鋼(gang)(gang)(gang)(gang)股份有限(xian)公(gong)(gong)(gong)司(si)和(he)寶(bao)(bao)雞鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)所(suo)屬中(zhong)(zhong)油(you)寶(bao)(bao)世(shi)(shi)順(shun)（秦(qin)皇(huang)島）鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)有限(xian)公(gong)(gong)(gong)司(si)供應(ying)(ying)X70大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)共計4萬多噸(dun)，實(shi)現了(le)(le)全面國(guo)(guo)(guo)產(chan)化，填補了(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)X70大(da)(da)(da)變(bian)(bian)(bian)(bian)(bian)形焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造空白(bai)。由鞍鋼(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)供應(ying)(ying)鋼(gang)(gang)(gang)(gang)板，巨龍(long)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)(gong)司(si)和(he)寶(bao)(bao)世(shi)(shi)順(shun)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)(gong)司(si)研(yan)(yan)制(zhi)(zhi)的(de)X80完成(cheng)了(le)(le)千噸(dun)級(ji)試生(sheng)(sheng)產(chan)，并于2012年(nian)11月通(tong)過(guo)了(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)石(shi)油(you)天然(ran)氣(qi)集團公(gong)(gong)(gong)司(si)在(zai)北京組(zu)織的(de)鑒定。標志著中(zhong)(zhong)國(guo)(guo)(guo)X80大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)具備了(le)(le)批量(liang)生(sheng)(sheng)產(chan)能力(li)(li)。2012年(nian)，中(zhong)(zhong)油(you)寶(bao)(bao)世(shi)(shi)順(shun)（秦(qin)皇(huang)島）鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)有限(xian)公(gong)(gong)(gong)司(si)和(he)巨龍(long)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)(gong)(gong)司(si)為(wei)西氣(qi)東(dong)輸三線(xian)(xian)供應(ying)(ying)X80鋼(gang)(gang)(gang)(gang)級(ji)ф1219mm×26.4mm大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，填補了(le)(le)中(zhong)(zhong)國(guo)(guo)(guo)X80大(da)(da)(da)應(ying)(ying)變(bian)(bian)(bian)(bian)(bian)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造空白(bai)。

  我國鋼(gang)管(guan)(guan)(guan)(guan)廠家(jia)也在(zai)開發(fa)高(gao)寒地區K60和K65（X80）用(yong)管(guan)(guan)(guan)(guan)線鋼(gang)管(guan)(guan)(guan)(guan)，并(bing)且取(qu)得了重大進(jin)展。鋼(gang)管(guan)(guan)(guan)(guan)的(de)低溫(wen)韌性和應變性能(neng)均比(bi)較理想。正在(zai)進(jin)行(xing)進(jin)一步的(de)開發(fa)。2006年原華北石(shi)油第一機械廠巨(ju)(ju)龍鋼(gang)管(guan)(guan)(guan)(guan)首(shou)次開發(fa)符合俄(e)羅(luo)斯標準的(de)輸送鋼(gang)管(guan)(guan)(guan)(guan)K60材質直(zhi)縫埋(mai)弧焊鋼(gang)管(guan)(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年，渤海(hai)裝備所屬(shu)巨(ju)(ju)龍鋼(gang)管(guan)(guan)(guan)(guan)公司研制(zhi)成功了耐低溫(wen)K60直(zhi)縫焊管(guan)(guan)(guan)(guan)、彎(wan)管(guan)(guan)(guan)(guan)和管(guan)(guan)(guan)(guan)件，并(bing)為(wei)中(zhong)俄(e)原油管(guan)(guan)(guan)(guan)道(dao)（二期(qi)）供貨彎(wan)管(guan)(guan)(guan)(guan)Φ1220mm×33mm（36根(gen)）、φ1220mm×26.4mm（2根(gen)）。巨(ju)(ju)龍鋼(gang)管(guan)(guan)(guan)(guan)公司研制(zhi)生產的(de)站(zhan)場(chang)低溫(wen)環境（-45℃）用(yong)φ1422mm×30.8mm X80直(zhi)縫埋(mai)弧焊鋼(gang)管(guan)(guan)(guan)(guan)、站(zhan)場(chang)低溫(wen)環境（-45℃）用(yong)φ1422mm×33.8mm X80感應加熱彎(wan)管(guan)(guan)(guan)(guan)、站(zhan)場(chang)低溫(wen)環境（-45℃）用(yong)φ1422mm×1219×80三通(tong)于2018年11月，在(zai)集團(tuan)公司進(jin)行(xing)鑒定，目前具(ju)備批量(liang)生產能(neng)力。該系(xi)列產品可實現-45℃環境下(xia)的(de)裸(luo)露服役，從而(er)節省(sheng)大量(liang)因保溫(wen)伴熱措施導(dao)致的(de)建設與維護費用(yong)。該系(xi)列產品代表著當前國內油氣輸送鋼(gang)管(guan)(guan)(guan)(guan)最(zui)高(gao)水平(ping)，填(tian)補(bu)了國內空白。

  國(guo)(guo)(guo)(guo)內酸(suan)性(xing)服役環(huan)境用高等(deng)級焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)起步(bu)晚，但進步(bu)很快。耐(nai)腐蝕管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線鋼是(shi)輸(shu)送酸(suan)性(xing)天(tian)然氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線的(de)(de)(de)重(zhong)要用鋼，是(shi)目前(qian)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線鋼中(zhong)要求(qiu)最為嚴格、技術水(shui)平要求(qiu)最高的(de)(de)(de)鋼種，是(shi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道用鋼系(xi)列的(de)(de)(de)一(yi)個重(zhong)要組(zu)成部(bu)分，是(shi)當(dang)代冶金(jin)技術和裝(zhuang)備(bei)水(shui)平完美結合的(de)(de)(de)典型(xing)(xing)(xing)產(chan)品(pin)。國(guo)(guo)(guo)(guo)內焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)企業和冶金(jin)企業聯合攻關，在冶煉純凈(jing)化(hua)、連鑄低(di)倍控制(zhi)、板材TMCP控制(zhi)及耐(nai)酸(suan)焊材開發等(deng)方面取得巨(ju)大成就。從鋼級來(lai)看，從主要供(gong)應(ying)集輸(shu)的(de)(de)(de)小(xiao)直(zhi)徑X52MS逐漸發展到大直(zhi)徑長距離外輸(shu)用X65MS，X70MS也(ye)有研發業績；從管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)型(xing)(xing)(xing)來(lai)看，從小(xiao)口(kou)徑無縫(feng)、HFW焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)發展到大口(kou)徑埋(mai)弧(hu)(hu)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)；從制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)采(cai)用的(de)(de)(de)原材料看，不僅(jin)(jin)有螺旋(xuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和HFW焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)需(xu)(xu)要的(de)(de)(de)熱軋卷板，也(ye)有滿(man)足大口(kou)徑直(zhi)縫(feng)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)寬厚(hou)板；從供(gong)應(ying)市場來(lai)看，不僅(jin)(jin)滿(man)足國(guo)(guo)(guo)(guo)內中(zhong)石(shi)油(you)、中(zhong)石(shi)化(hua)、中(zhong)海(hai)油(you)等(deng)需(xu)(xu)求(qiu)發展，高等(deng)級酸(suan)性(xing)環(huan)境用焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)還批量出口(kou)到中(zhong)東、中(zhong)亞和北美等(deng)國(guo)(guo)(guo)(guo)家和地區；典型(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠(chang)有寶鋼焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)部(bu)、渤海(hai)裝(zhuang)備(bei)、寶雞鋼管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、珠江鋼管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)企業，典型(xing)(xing)(xing)工程如2004年全部(bu)采(cai)用國(guo)(guo)(guo)(guo)產(chan)X65MS直(zhi)縫(feng)埋(mai)弧(hu)(hu)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)忠-武(wu)輸(shu)氣管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線工程，2015年寶鋼獨家供(gong)應(ying)2.68萬(wan)噸X65MS直(zhi)縫(feng)埋(mai)弧(hu)(hu)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de) BP KHAZZAN 1期項目等(deng)。寶鋼股份有限公司(si)截(jie)至目前(qian)耐(nai)酸(suan)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)共(gong)計(ji)生產(chan)55萬(wan)噸，其中(zhong)埋(mai)弧(hu)(hu)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)約(yue)50萬(wan)噸，HFW焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)約(yue)5萬(wan)噸；珠江鋼管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)生產(chan)的(de)(de)(de)耐(nai)酸(suan)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)累計(ji)超(chao)過了10萬(wan)噸；巨(ju)龍(long)鋼管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)公司(si)為土(tu)庫曼、長慶油(you)田等(deng)供(gong)貨共(gong)計(ji)3.4萬(wan)噸。