隨(sui)著(zhu)陸地油(you)(you)氣資(zi)源的(de)不(bu)斷枯竭，海(hai)(hai)洋(yang)油(you)(you)氣開(kai)(kai)發特別(bie)是深海(hai)(hai)油(you)(you)氣開(kai)(kai)發已成為(wei)世(shi)界能源開(kai)(kai)發的(de)主(zhu)要領域。據統計，世(shi)界海(hai)(hai)洋(yang)石(shi)(shi)油(you)(you)資(zi)源量(liang)(liang)占(zhan)全球石(shi)(shi)油(you)(you)資(zi)源總(zong)量(liang)(liang)的(de)34％，其蘊藏量(liang)(liang)1000多億(yi)噸(dun)；我國海(hai)(hai)洋(yang)石(shi)(shi)油(you)(you)資(zi)源探明(ming)儲(chu)量(liang)(liang)約300億(yi)噸(dun)，天然(ran)氣約20萬億(yi)立方米。中(zhong)國南海(hai)(hai)石(shi)(shi)油(you)(you)地質儲(chu)量(liang)(liang)約為(wei)250～300億(yi)噸(dun)，占(zhan)中(zhong)國油(you)(you)氣資(zi)源總(zong)量(liang)(liang)的(de)1/3，屬于世(shi)界四大海(hai)(hai)洋(yang)油(you)(you)氣聚集中(zhong)心之(zhi)一。

  現在人(ren)們常說的“海(hai)(hai)(hai)洋(yang)工(gong)程(cheng)”，主要限于海(hai)(hai)(hai)洋(yang)油(you)氣鉆采裝(zhuang)(zhuang)置(zhi)(zhi)（平(ping)臺(tai)(tai)）、海(hai)(hai)(hai)洋(yang)鉆采裝(zhuang)(zhuang)置(zhi)(zhi)的配套設(she)備、海(hai)(hai)(hai)洋(yang)工(gong)程(cheng)船。其“海(hai)(hai)(hai)洋(yang)油(you)氣鉆采裝(zhuang)(zhuang)置(zhi)(zhi)（平(ping)臺(tai)(tai)）”成(cheng)為“海(hai)(hai)(hai)洋(yang)工(gong)程(cheng)”的重要標志(zhi)。

  海(hai)(hai)(hai)洋(yang)(yang)工(gong)程用(yong)鋼主(zhu)要分為海(hai)(hai)(hai)洋(yang)(yang)平(ping)臺(tai)用(yong)鋼、海(hai)(hai)(hai)洋(yang)(yang)能源(yuan)設(she)(she)備用(yong)鋼和海(hai)(hai)(hai)底油氣管(guan)線用(yong)鋼三大類。目前我國海(hai)(hai)(hai)洋(yang)(yang)平(ping)臺(tai)用(yong)鋼年(nian)需求總量在(zai)350萬噸(dun)以上(shang)，其(qi)中海(hai)(hai)(hai)底管(guan)線用(yong)鋼超(chao)過30萬噸(dun)。我國海(hai)(hai)(hai)上(shang)風電(dian)設(she)(she)備年(nian)用(yong)鋼量也在(zai)100萬噸(dun)以上(shang)。

  鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)在海(hai)洋工程中的(de)(de)(de)應(ying)用(yong)(yong)(yong)十分(fen)普遍，大體系(xi)(xi)中，大致分(fen)為三種類(lei)型：功能(neng)系(xi)(xi)統(tong)(tong)用(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)（包括(kuo)常規系(xi)(xi)統(tong)(tong)和專用(yong)(yong)(yong)系(xi)(xi)統(tong)(tong)中用(yong)(yong)(yong)的(de)(de)(de)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)）、結構(gou)中用(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)和特殊(shu)用(yong)(yong)(yong)途的(de)(de)(de)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)。目前鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)行(xing)業常說的(de)(de)(de)“海(hai)洋工程用(yong)(yong)(yong)管(guan)(guan)(guan)(guan)”，主要是指第二類(lei)結構(gou)用(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)中的(de)(de)(de)樁腿半弦管(guan)(guan)(guan)(guan)及(ji)其支撐管(guan)(guan)(guan)(guan)、導管(guan)(guan)(guan)(guan)架(jia)、水下鋼(gang)(gang)(gang)(gang)樁、隔水套管(guan)(guan)(guan)(guan)和第三類(lei)特殊(shu)用(yong)(yong)(yong)途鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)中的(de)(de)(de)海(hai)底管(guan)(guan)(guan)(guan)線(xian)管(guan)(guan)(guan)(guan)等。

  我國海(hai)(hai)洋工程用鋼(gang)管(guan)(guan)(guan)雖然起步較(jiao)晚(wan)，但在十多(duo)年的(de)(de)發(fa)展(zhan)中(zhong)已經取(qu)得(de)了(le)很(hen)大的(de)(de)進步。天津鋼(gang)管(guan)(guan)(guan)、寶鋼(gang)、衡陽鋼(gang)管(guan)(guan)(guan)、珠江鋼(gang)管(guan)(guan)(guan)、寶雞鋼(gang)管(guan)(guan)(guan)、渤(bo)海(hai)(hai)裝備等企(qi)業，已經開(kai)(kai)發(fa)并(bing)批量生產(chan)出海(hai)(hai)底管(guan)(guan)(guan)線(xian)管(guan)(guan)(guan)、樁(zhuang)腿半弦管(guan)(guan)(guan)及(ji)其(qi)支撐管(guan)(guan)(guan)、隔水(shui)套(tao)管(guan)(guan)(guan)、水(shui)下(xia)鋼(gang)樁(zhuang)、等產(chan)品，部分品種可(ke)以完全滿足國內的(de)(de)需(xu)求，為我國海(hai)(hai)洋的(de)(de)開(kai)(kai)發(fa)做出了(le)重(zhong)要的(de)(de)貢獻。