隨(sui)著(zhu)陸地油(you)氣(qi)資(zi)(zi)源的(de)(de)不斷枯竭，海(hai)洋油(you)氣(qi)開(kai)發(fa)特別是深海(hai)油(you)氣(qi)開(kai)發(fa)已成為世(shi)界能源開(kai)發(fa)的(de)(de)主(zhu)要領域。據(ju)統計，世(shi)界海(hai)洋石(shi)油(you)資(zi)(zi)源量(liang)占(zhan)全(quan)球石(shi)油(you)資(zi)(zi)源總(zong)量(liang)的(de)(de)34％，其蘊藏(zang)量(liang)1000多億噸(dun)(dun)；我國(guo)海(hai)洋石(shi)油(you)資(zi)(zi)源探明儲量(liang)約(yue)300億噸(dun)(dun)，天然氣(qi)約(yue)20萬億立方米。中(zhong)(zhong)國(guo)南海(hai)石(shi)油(you)地質儲量(liang)約(yue)為250～300億噸(dun)(dun)，占(zhan)中(zhong)(zhong)國(guo)油(you)氣(qi)資(zi)(zi)源總(zong)量(liang)的(de)(de)1/3，屬于世(shi)界四大海(hai)洋油(you)氣(qi)聚集中(zhong)(zhong)心之一。

  現在人們常(chang)說的(de)“海(hai)(hai)洋(yang)工程”，主要(yao)(yao)限于海(hai)(hai)洋(yang)油氣鉆采(cai)裝置（平(ping)臺）、海(hai)(hai)洋(yang)鉆采(cai)裝置的(de)配套(tao)設備、海(hai)(hai)洋(yang)工程船。其“海(hai)(hai)洋(yang)油氣鉆采(cai)裝置（平(ping)臺）”成(cheng)為(wei)“海(hai)(hai)洋(yang)工程”的(de)重要(yao)(yao)標志。

  海(hai)洋工程用鋼(gang)主要分為海(hai)洋平臺用鋼(gang)、海(hai)洋能源設備用鋼(gang)和海(hai)底油氣管線用鋼(gang)三大類。目(mu)前我國海(hai)洋平臺用鋼(gang)年需求總量在350萬(wan)噸(dun)以上，其中海(hai)底管線用鋼(gang)超過30萬(wan)噸(dun)。我國海(hai)上風電設備年用鋼(gang)量也在100萬(wan)噸(dun)以上。

  鋼(gang)(gang)(gang)管(guan)(guan)(guan)在(zai)海洋(yang)工程中(zhong)(zhong)(zhong)的(de)應用(yong)(yong)(yong)(yong)十(shi)分普遍，大(da)體系(xi)中(zhong)(zhong)(zhong)，大(da)致分為三(san)(san)種類(lei)(lei)型：功(gong)能系(xi)統(tong)用(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)（包括(kuo)常(chang)規系(xi)統(tong)和專用(yong)(yong)(yong)(yong)系(xi)統(tong)中(zhong)(zhong)(zhong)用(yong)(yong)(yong)(yong)的(de)鋼(gang)(gang)(gang)管(guan)(guan)(guan)）、結構(gou)(gou)中(zhong)(zhong)(zhong)用(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)和特殊(shu)用(yong)(yong)(yong)(yong)途的(de)鋼(gang)(gang)(gang)管(guan)(guan)(guan)。目前(qian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)行(xing)業常(chang)說的(de)“海洋(yang)工程用(yong)(yong)(yong)(yong)管(guan)(guan)(guan)”，主要是指第(di)二類(lei)(lei)結構(gou)(gou)用(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)管(guan)(guan)(guan)中(zhong)(zhong)(zhong)的(de)樁腿半弦管(guan)(guan)(guan)及其支撐管(guan)(guan)(guan)、導管(guan)(guan)(guan)架、水(shui)下(xia)鋼(gang)(gang)(gang)樁、隔水(shui)套管(guan)(guan)(guan)和第(di)三(san)(san)類(lei)(lei)特殊(shu)用(yong)(yong)(yong)(yong)途鋼(gang)(gang)(gang)管(guan)(guan)(guan)中(zhong)(zhong)(zhong)的(de)海底管(guan)(guan)(guan)線管(guan)(guan)(guan)等。

  我國海(hai)(hai)洋(yang)工(gong)程用鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)雖然起(qi)步較晚，但在(zai)十多年的(de)(de)發(fa)展(zhan)中(zhong)已(yi)經取得了(le)很大的(de)(de)進步。天津鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、寶鋼(gang)(gang)、衡陽鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、珠江鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、寶雞鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、渤(bo)海(hai)(hai)裝備等企業，已(yi)經開發(fa)并批量生(sheng)產出(chu)海(hai)(hai)底管(guan)(guan)(guan)(guan)(guan)線(xian)管(guan)(guan)(guan)(guan)(guan)、樁腿(tui)半弦管(guan)(guan)(guan)(guan)(guan)及(ji)其支撐管(guan)(guan)(guan)(guan)(guan)、隔水(shui)套管(guan)(guan)(guan)(guan)(guan)、水(shui)下鋼(gang)(gang)樁、等產品(pin)，部分品(pin)種可以完全滿足國內的(de)(de)需求，為我國海(hai)(hai)洋(yang)的(de)(de)開發(fa)做出(chu)了(le)重要的(de)(de)貢獻。