隨著陸地(di)油氣資源(yuan)(yuan)的(de)(de)不(bu)斷枯竭，海(hai)洋(yang)油氣開(kai)發(fa)特別是深海(hai)油氣開(kai)發(fa)已成(cheng)為世(shi)界能源(yuan)(yuan)開(kai)發(fa)的(de)(de)主要領域。據統計，世(shi)界海(hai)洋(yang)石(shi)油資源(yuan)(yuan)量占全球(qiu)石(shi)油資源(yuan)(yuan)總量的(de)(de)34％，其蘊(yun)藏量1000多(duo)億噸；我國(guo)海(hai)洋(yang)石(shi)油資源(yuan)(yuan)探明(ming)儲量約300億噸，天然氣約20萬億立方米。中(zhong)國(guo)南海(hai)石(shi)油地(di)質(zhi)儲量約為250～300億噸，占中(zhong)國(guo)油氣資源(yuan)(yuan)總量的(de)(de)1/3，屬于世(shi)界四大海(hai)洋(yang)油氣聚集(ji)中(zhong)心之一。

  現(xian)在人們常說的“海(hai)洋(yang)工程”，主(zhu)要限于海(hai)洋(yang)油氣鉆(zhan)采(cai)裝(zhuang)置（平(ping)臺(tai)）、海(hai)洋(yang)鉆(zhan)采(cai)裝(zhuang)置的配(pei)套設備、海(hai)洋(yang)工程船。其(qi)“海(hai)洋(yang)油氣鉆(zhan)采(cai)裝(zhuang)置（平(ping)臺(tai)）”成為“海(hai)洋(yang)工程”的重要標志。

  海洋(yang)工(gong)程(cheng)用(yong)(yong)鋼(gang)主要(yao)分為海洋(yang)平臺用(yong)(yong)鋼(gang)、海洋(yang)能(neng)源設(she)備用(yong)(yong)鋼(gang)和海底(di)油(you)氣管(guan)(guan)線用(yong)(yong)鋼(gang)三大(da)類。目(mu)前我國海洋(yang)平臺用(yong)(yong)鋼(gang)年需求總量(liang)在350萬(wan)噸以(yi)上(shang)，其中海底(di)管(guan)(guan)線用(yong)(yong)鋼(gang)超過30萬(wan)噸。我國海上(shang)風電設(she)備年用(yong)(yong)鋼(gang)量(liang)也在100萬(wan)噸以(yi)上(shang)。

  鋼(gang)(gang)管(guan)(guan)(guan)(guan)在海洋工程中(zhong)的(de)應(ying)用(yong)(yong)(yong)(yong)(yong)十分普(pu)遍(bian)，大體(ti)系(xi)中(zhong)，大致分為(wei)三種(zhong)類型：功能系(xi)統(tong)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)（包括常規系(xi)統(tong)和專用(yong)(yong)(yong)(yong)(yong)系(xi)統(tong)中(zhong)用(yong)(yong)(yong)(yong)(yong)的(de)鋼(gang)(gang)管(guan)(guan)(guan)(guan)）、結構中(zhong)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)和特殊用(yong)(yong)(yong)(yong)(yong)途(tu)(tu)的(de)鋼(gang)(gang)管(guan)(guan)(guan)(guan)。目前鋼(gang)(gang)管(guan)(guan)(guan)(guan)行業常說的(de)“海洋工程用(yong)(yong)(yong)(yong)(yong)管(guan)(guan)(guan)(guan)”，主(zhu)要是指(zhi)第二類結構用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)管(guan)(guan)(guan)(guan)中(zhong)的(de)樁(zhuang)腿半弦管(guan)(guan)(guan)(guan)及其支撐管(guan)(guan)(guan)(guan)、導管(guan)(guan)(guan)(guan)架、水下鋼(gang)(gang)樁(zhuang)、隔水套(tao)管(guan)(guan)(guan)(guan)和第三類特殊用(yong)(yong)(yong)(yong)(yong)途(tu)(tu)鋼(gang)(gang)管(guan)(guan)(guan)(guan)中(zhong)的(de)海底管(guan)(guan)(guan)(guan)線管(guan)(guan)(guan)(guan)等。

  我(wo)國(guo)海洋工程用鋼(gang)管(guan)(guan)(guan)雖然(ran)起步較晚，但在(zai)十(shi)多年的發展中已經取(qu)得了(le)(le)很大的進(jin)步。天津鋼(gang)管(guan)(guan)(guan)、寶(bao)鋼(gang)、衡陽鋼(gang)管(guan)(guan)(guan)、珠(zhu)江鋼(gang)管(guan)(guan)(guan)、寶(bao)雞鋼(gang)管(guan)(guan)(guan)、渤海裝備等企業，已經開發并批量生產出(chu)海底(di)管(guan)(guan)(guan)線管(guan)(guan)(guan)、樁(zhuang)(zhuang)腿半弦管(guan)(guan)(guan)及(ji)其支(zhi)撐管(guan)(guan)(guan)、隔水(shui)套管(guan)(guan)(guan)、水(shui)下鋼(gang)樁(zhuang)(zhuang)、等產品，部分品種可以完全滿(man)足(zu)國(guo)內的需求(qiu)，為我(wo)國(guo)海洋的開發做出(chu)了(le)(le)重要的貢獻(xian)。