大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)技術日趨成(cheng)熟。雙相組(zu)織(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)的(de)(de)成(cheng)功開(kai)(kai)發(fa)(fa)提高了(le)(le)(le)(le)(le)(le)高鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)級管(guan)(guan)(guan)(guan)(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)塑性變(bian)(bian)形能(neng)力(li)，降低了(le)(le)(le)(le)(le)(le)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)時效性能(neng)，X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)均(jun)已成(cheng)功開(kai)(kai)發(fa)(fa)，通(tong)(tong)(tong)過(guo)了(le)(le)(le)(le)(le)(le)新產品鑒定(ding)。我(wo)國(guo)西氣東(dong)(dong)輸(shu)(shu)二(er)線(xian)在(zai)特(te)殊地段成(cheng)功采(cai)(cai)用(yong)了(le)(le)(le)(le)(le)(le)基于(yu)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)的(de)(de)設計(ji)，并(bing)(bing)(bing)批(pi)量應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)用(yong)了(le)(le)(le)(le)(le)(le)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)；在(zai)西氣東(dong)(dong)輸(shu)(shu)二(er)線(xian)工(gong)程(cheng)開(kai)(kai)始前中石(shi)(shi)油(you)(you)集團公(gong)司(si)為(wei)滿足工(gong)程(cheng)需(xu)要，組(zu)織(zhi)國(guo)內多個(ge)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠和制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠開(kai)(kai)展了(le)(le)(le)(le)(le)(le)《西氣東(dong)(dong)輸(shu)(shu)二(er)線(xian)工(gong)程(cheng)關鍵(jian)(jian)技術研(yan)(yan)究(jiu)(jiu)》重(zhong)大(da)(da)(da)(da)專項(xiang)一(yi)期(qi)(qi)研(yan)(yan)究(jiu)(jiu)，先后完成(cheng)了(le)(le)(le)(le)(le)(le)直縫、螺旋和彎管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)件等產品研(yan)(yan)究(jiu)(jiu)，并(bing)(bing)(bing)實(shi)現了(le)(le)(le)(le)(le)(le)全部(bu)國(guo)產化。但西氣東(dong)(dong)輸(shu)(shu)二(er)線(xian)基于(yu)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)設計(ji)的(de)(de)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)沒(mei)有(you)實(shi)現國(guo)產化，全部(bu)采(cai)(cai)用(yong)的(de)(de)日本進(jin)口X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(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)(le)(le)解決這一(yi)難(nan)題，在(zai)《西氣東(dong)(dong)輸(shu)(shu)二(er)線(xian)工(gong)程(cheng)關鍵(jian)(jian)技術研(yan)(yan)究(jiu)(jiu)》重(zhong)大(da)(da)(da)(da)專項(xiang)二(er)期(qi)(qi)研(yan)(yan)究(jiu)(jiu)中，把(ba)大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)作為(wei)研(yan)(yan)究(jiu)(jiu)重(zhong)點進(jin)一(yi)步(bu)開(kai)(kai)展研(yan)(yan)究(jiu)(jiu)。經(jing)過(guo)重(zhong)大(da)(da)(da)(da)專項(xiang)參(can)加的(de)(de)各鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)廠和制(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)廠的(de)(de)通(tong)(tong)(tong)力(li)合作，X70、X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)研(yan)(yan)究(jiu)(jiu)成(cheng)功。X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)于(yu)2011年9月通(tong)(tong)(tong)過(guo)了(le)(le)(le)(le)(le)(le)中國(guo)石(shi)(shi)油(you)(you)天然(ran)(ran)氣集團公(gong)司(si)和中國(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)鐵工(gong)業協會在(zai)北(bei)(bei)京組(zu)織(zhi)的(de)(de)鑒定(ding)。X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)成(cheng)功應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)用(yong)于(yu)中緬(mian)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)道，由渤(bo)海裝備所屬巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)、寶(bao)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)股(gu)份有(you)限公(gong)司(si)和寶(bao)雞(ji)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)所屬中油(you)(you)寶(bao)世(shi)順（秦(qin)皇島）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有(you)限公(gong)司(si)供應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)X70大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)共計(ji)4萬多噸，實(shi)現了(le)(le)(le)(le)(le)(le)全面(mian)國(guo)產化，填補了(le)(le)(le)(le)(le)(le)中國(guo)X70大(da)(da)(da)(da)變(bian)(bian)形焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)造(zao)空白。由鞍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)、沙鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)供應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)板，巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)和寶(bao)世(shi)順鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)研(yan)(yan)制(zhi)的(de)(de)X80完成(cheng)了(le)(le)(le)(le)(le)(le)千噸級試生產，并(bing)(bing)(bing)于(yu)2012年11月通(tong)(tong)(tong)過(guo)了(le)(le)(le)(le)(le)(le)中國(guo)石(shi)(shi)油(you)(you)天然(ran)(ran)氣集團公(gong)司(si)在(zai)北(bei)(bei)京組(zu)織(zhi)的(de)(de)鑒定(ding)。標志(zhi)著中國(guo)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)具備了(le)(le)(le)(le)(le)(le)批(pi)量生產能(neng)力(li)。2012年，中油(you)(you)寶(bao)世(shi)順（秦(qin)皇島）鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)有(you)限公(gong)司(si)和巨龍鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司(si)為(wei)西氣東(dong)(dong)輸(shu)(shu)三(san)線(xian)供應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)X80鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)級ф1219mm×26.4mm大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，填補了(le)(le)(le)(le)(le)(le)中國(guo)X80大(da)(da)(da)(da)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)變(bian)(bian)焊管(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)造(zao)空白。

  我國(guo)(guo)鋼(gang)(gang)(gang)管(guan)(guan)(guan)廠家(jia)也在開(kai)發(fa)高寒(han)地區(qu)K60和(he)K65（X80）用(yong)(yong)(yong)管(guan)(guan)(guan)線(xian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)，并(bing)且取得了(le)重大進展。鋼(gang)(gang)(gang)管(guan)(guan)(guan)的低(di)溫(wen)(wen)(wen)韌(ren)性(xing)和(he)應(ying)變(bian)性(xing)能(neng)均比較理(li)想。正在進行(xing)進一步的開(kai)發(fa)。2006年(nian)原華北(bei)石(shi)油第一機械廠巨龍(long)(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)首次(ci)開(kai)發(fa)符合俄羅斯標準的輸(shu)(shu)送鋼(gang)(gang)(gang)管(guan)(guan)(guan)K60材質直(zhi)縫(feng)埋(mai)弧焊(han)(han)鋼(gang)(gang)(gang)管(guan)(guan)(guan)φ1220mmx19／22／24mm，2011年(nian)，渤海裝備所屬巨龍(long)(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)公司研制成功(gong)了(le)耐低(di)溫(wen)(wen)(wen)K60直(zhi)縫(feng)焊(han)(han)管(guan)(guan)(guan)、彎(wan)(wan)管(guan)(guan)(guan)和(he)管(guan)(guan)(guan)件，并(bing)為(wei)中俄原油管(guan)(guan)(guan)道(dao)（二期）供(gong)貨彎(wan)(wan)管(guan)(guan)(guan)Φ1220mm×33mm（36根）、φ1220mm×26.4mm（2根）。巨龍(long)(long)鋼(gang)(gang)(gang)管(guan)(guan)(guan)公司研制生產的站(zhan)場(chang)低(di)溫(wen)(wen)(wen)環(huan)境(jing)(jing)（-45℃）用(yong)(yong)(yong)φ1422mm×30.8mm X80直(zhi)縫(feng)埋(mai)弧焊(han)(han)鋼(gang)(gang)(gang)管(guan)(guan)(guan)、站(zhan)場(chang)低(di)溫(wen)(wen)(wen)環(huan)境(jing)(jing)（-45℃）用(yong)(yong)(yong)φ1422mm×33.8mm X80感應(ying)加熱(re)彎(wan)(wan)管(guan)(guan)(guan)、站(zhan)場(chang)低(di)溫(wen)(wen)(wen)環(huan)境(jing)(jing)（-45℃）用(yong)(yong)(yong)φ1422mm×1219×80三(san)通于(yu)2018年(nian)11月，在集(ji)團公司進行(xing)鑒(jian)定，目前具備批量(liang)生產能(neng)力。該(gai)系列產品(pin)可實現-45℃環(huan)境(jing)(jing)下的裸(luo)露服役，從(cong)而節(jie)省大量(liang)因保溫(wen)(wen)(wen)伴熱(re)措施導致的建設與(yu)維(wei)護(hu)費用(yong)(yong)(yong)。該(gai)系列產品(pin)代表著當前國(guo)(guo)內(nei)油氣(qi)輸(shu)(shu)送鋼(gang)(gang)(gang)管(guan)(guan)(guan)最高水(shui)平，填補了(le)國(guo)(guo)內(nei)空白。

  國(guo)(guo)內(nei)酸(suan)(suan)性(xing)服役環境(jing)(jing)用高等(deng)(deng)級(ji)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)起(qi)步晚(wan)，但進步很快(kuai)。耐腐蝕管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)是(shi)(shi)輸送酸(suan)(suan)性(xing)天然氣(qi)(qi)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)的(de)(de)重要(yao)用鋼(gang)(gang)(gang)(gang)(gang)，是(shi)(shi)目(mu)(mu)前管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)鋼(gang)(gang)(gang)(gang)(gang)中(zhong)要(yao)求最為嚴格、技(ji)術水平要(yao)求最高的(de)(de)鋼(gang)(gang)(gang)(gang)(gang)種，是(shi)(shi)管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)用鋼(gang)(gang)(gang)(gang)(gang)系列的(de)(de)一個(ge)重要(yao)組(zu)成部分(fen)，是(shi)(shi)當代冶(ye)金(jin)技(ji)術和(he)(he)裝備水平完美結合的(de)(de)典型產(chan)品(pin)。國(guo)(guo)內(nei)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)企業和(he)(he)冶(ye)金(jin)企業聯合攻關，在(zai)冶(ye)煉純(chun)凈化、連鑄低倍(bei)控制、板(ban)(ban)材TMCP控制及耐酸(suan)(suan)焊(han)材開發等(deng)(deng)方(fang)面取得巨(ju)(ju)大成就。從(cong)(cong)鋼(gang)(gang)(gang)(gang)(gang)級(ji)來看，從(cong)(cong)主要(yao)供(gong)(gong)應集(ji)輸的(de)(de)小直(zhi)徑(jing)X52MS逐漸發展(zhan)到大直(zhi)徑(jing)長(chang)距離(li)外輸用X65MS，X70MS也有研發業績(ji)；從(cong)(cong)管(guan)(guan)(guan)(guan)(guan)(guan)型來看，從(cong)(cong)小口(kou)(kou)徑(jing)無縫(feng)(feng)(feng)、HFW焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)發展(zhan)到大口(kou)(kou)徑(jing)埋(mai)弧焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)；從(cong)(cong)制管(guan)(guan)(guan)(guan)(guan)(guan)采(cai)(cai)用的(de)(de)原材料看，不(bu)僅有螺旋(xuan)管(guan)(guan)(guan)(guan)(guan)(guan)和(he)(he)HFW焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)需要(yao)的(de)(de)熱軋卷板(ban)(ban)，也有滿(man)足大口(kou)(kou)徑(jing)直(zhi)縫(feng)(feng)(feng)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)寬厚板(ban)(ban)；從(cong)(cong)供(gong)(gong)應市場(chang)來看，不(bu)僅滿(man)足國(guo)(guo)內(nei)中(zhong)石油(you)、中(zhong)石化、中(zhong)海油(you)等(deng)(deng)需求發展(zhan)，高等(deng)(deng)級(ji)酸(suan)(suan)性(xing)環境(jing)(jing)用焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)還批量出口(kou)(kou)到中(zhong)東、中(zhong)亞(ya)和(he)(he)北美等(deng)(deng)國(guo)(guo)家(jia)和(he)(he)地區；典型管(guan)(guan)(guan)(guan)(guan)(guan)廠有寶(bao)鋼(gang)(gang)(gang)(gang)(gang)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)部、渤海裝備、寶(bao)雞鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、珠(zhu)江鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)等(deng)(deng)企業，典型工(gong)程(cheng)(cheng)如2004年(nian)全部采(cai)(cai)用國(guo)(guo)產(chan)X65MS直(zhi)縫(feng)(feng)(feng)埋(mai)弧焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)忠-武(wu)輸氣(qi)(qi)管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)(xian)(xian)工(gong)程(cheng)(cheng)，2015年(nian)寶(bao)鋼(gang)(gang)(gang)(gang)(gang)獨(du)家(jia)供(gong)(gong)應2.68萬(wan)(wan)噸(dun)(dun)(dun)X65MS直(zhi)縫(feng)(feng)(feng)埋(mai)弧焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de) BP KHAZZAN 1期(qi)項目(mu)(mu)等(deng)(deng)。寶(bao)鋼(gang)(gang)(gang)(gang)(gang)股(gu)份有限公司截至目(mu)(mu)前耐酸(suan)(suan)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)共計(ji)生產(chan)55萬(wan)(wan)噸(dun)(dun)(dun)，其中(zhong)埋(mai)弧焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)約(yue)50萬(wan)(wan)噸(dun)(dun)(dun)，HFW焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)約(yue)5萬(wan)(wan)噸(dun)(dun)(dun)；珠(zhu)江鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)生產(chan)的(de)(de)耐酸(suan)(suan)焊(han)管(guan)(guan)(guan)(guan)(guan)(guan)累計(ji)超過(guo)了10萬(wan)(wan)噸(dun)(dun)(dun)；巨(ju)(ju)龍鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)公司為土庫(ku)曼、長(chang)慶油(you)田等(deng)(deng)供(gong)(gong)貨共計(ji)3.4萬(wan)(wan)噸(dun)(dun)(dun)。