隨著陸(lu)地油(you)(you)氣(qi)資(zi)源的(de)不斷枯竭，海(hai)(hai)洋油(you)(you)氣(qi)開發(fa)特別是深海(hai)(hai)油(you)(you)氣(qi)開發(fa)已(yi)成(cheng)為(wei)世(shi)界(jie)能源開發(fa)的(de)主要領域。據(ju)統(tong)計，世(shi)界(jie)海(hai)(hai)洋石(shi)(shi)(shi)油(you)(you)資(zi)源量(liang)(liang)(liang)占全球(qiu)石(shi)(shi)(shi)油(you)(you)資(zi)源總(zong)量(liang)(liang)(liang)的(de)34％，其蘊藏量(liang)(liang)(liang)1000多億(yi)噸(dun)；我國(guo)(guo)海(hai)(hai)洋石(shi)(shi)(shi)油(you)(you)資(zi)源探明儲(chu)量(liang)(liang)(liang)約(yue)300億(yi)噸(dun)，天然氣(qi)約(yue)20萬億(yi)立方米。中國(guo)(guo)南海(hai)(hai)石(shi)(shi)(shi)油(you)(you)地質儲(chu)量(liang)(liang)(liang)約(yue)為(wei)250～300億(yi)噸(dun)，占中國(guo)(guo)油(you)(you)氣(qi)資(zi)源總(zong)量(liang)(liang)(liang)的(de)1/3，屬于世(shi)界(jie)四(si)大海(hai)(hai)洋油(you)(you)氣(qi)聚(ju)集(ji)中心(xin)之一。

  現(xian)在人們常說(shuo)的“海(hai)(hai)洋(yang)工(gong)程(cheng)(cheng)”，主要限于(yu)海(hai)(hai)洋(yang)油(you)氣(qi)鉆(zhan)采(cai)裝置(zhi)（平(ping)臺(tai)）、海(hai)(hai)洋(yang)鉆(zhan)采(cai)裝置(zhi)的配套(tao)設備、海(hai)(hai)洋(yang)工(gong)程(cheng)(cheng)船。其“海(hai)(hai)洋(yang)油(you)氣(qi)鉆(zhan)采(cai)裝置(zhi)（平(ping)臺(tai)）”成為(wei)“海(hai)(hai)洋(yang)工(gong)程(cheng)(cheng)”的重要標志。

  海(hai)(hai)洋工程(cheng)用(yong)鋼(gang)主要分(fen)為海(hai)(hai)洋平臺用(yong)鋼(gang)、海(hai)(hai)洋能(neng)源設(she)備(bei)用(yong)鋼(gang)和海(hai)(hai)底油氣管線(xian)用(yong)鋼(gang)三(san)大(da)類(lei)。目(mu)前我國(guo)海(hai)(hai)洋平臺用(yong)鋼(gang)年需求總量在(zai)350萬噸以上(shang)，其中海(hai)(hai)底管線(xian)用(yong)鋼(gang)超過(guo)30萬噸。我國(guo)海(hai)(hai)上(shang)風電設(she)備(bei)年用(yong)鋼(gang)量也在(zai)100萬噸以上(shang)。

  鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)在海(hai)洋工(gong)程(cheng)中(zhong)(zhong)的應(ying)用(yong)(yong)(yong)十分普遍，大(da)體系(xi)中(zhong)(zhong)，大(da)致分為三(san)種類(lei)型：功能系(xi)統(tong)用(yong)(yong)(yong)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（包括常(chang)規系(xi)統(tong)和(he)專用(yong)(yong)(yong)系(xi)統(tong)中(zhong)(zhong)用(yong)(yong)(yong)的鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)）、結構中(zhong)(zhong)用(yong)(yong)(yong)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)特殊用(yong)(yong)(yong)途的鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。目前鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)行(xing)業常(chang)說的“海(hai)洋工(gong)程(cheng)用(yong)(yong)(yong)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)”，主要是指(zhi)第二類(lei)結構用(yong)(yong)(yong)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)中(zhong)(zhong)的樁腿半(ban)弦管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)及其支撐管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、導管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)架、水下(xia)鋼(gang)樁、隔水套管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)第三(san)類(lei)特殊用(yong)(yong)(yong)途鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)中(zhong)(zhong)的海(hai)底管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)線管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等。

  我國(guo)海(hai)(hai)洋工程用(yong)鋼管(guan)(guan)雖然起步較(jiao)晚，但(dan)在十多(duo)年的(de)發展(zhan)中已經(jing)取(qu)得了很大的(de)進步。天津鋼管(guan)(guan)、寶鋼、衡(heng)陽鋼管(guan)(guan)、珠江鋼管(guan)(guan)、寶雞鋼管(guan)(guan)、渤海(hai)(hai)裝備等企(qi)業，已經(jing)開(kai)發并批量生產出海(hai)(hai)底管(guan)(guan)線管(guan)(guan)、樁腿(tui)半弦管(guan)(guan)及其(qi)支撐管(guan)(guan)、隔水套管(guan)(guan)、水下鋼樁、等產品，部分(fen)品種可以完全滿(man)足國(guo)內的(de)需(xu)求，為我國(guo)海(hai)(hai)洋的(de)開(kai)發做出了重(zhong)要(yao)的(de)貢(gong)獻。