Development and Application of φ457 mm x 25.4 mm Large Size X65QO Seamless Steel Tube for Deep Subsea

Special Steel ›› 2021, Vol. 42 ›› Issue (5): 41-45.

Special Issue: 无缝钢管

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Development and Application of φ457 mm x 25.4 mm Large Size X65QO Seamless Steel Tube for Deep Subsea

Xiong gang¹, Xia Wen bin², Li Duanzheng² , Tian Yan²

1. Hainan Branch of China National Offshore Oil Corporation ( China Co.,Ltd) ,Haikou 570311 ；
2. Technology Center of Hunan Hengyang Valin Steel Tube (Group) Co., Ltd., Hengyang 421001

Received:2021-01-27 Online:2021-10-01 Published:2023-02-03

X65QO φ457 mm x 25.4 mm大口径深海海底无缝钢管的开发和应用

熊刚¹，夏文斌²，李端正²，田研²

1. 中海石油(中国有限公司)海南分公司，海口 570311；
2. 湖南衡阳华菱钢管(集团)有限公司技术中心，衡阳 421001

作者简介:熊刚(1980-)，男，高级工程师，2003年天津大学(本科)毕业，海洋工程研究。

Abstract

Abstract: The composition and process flowsheet of deep water oilfield large size deep subsea pipeline steel have been designed and developed. The experimental batch results of X65QO steel seamless tube show that: through the optimization of micro alloy composition (/% ：0.15Mo,0.04Nb,0.09V,0.06Ti),pilger tube rolling process,combined with 930 °C quenching and 670 °C tempering process,the yield strength of X65QO steel grade seamless steel tube for deep sea is ~500 MPa,the tensile strength is ~ 580 MPa, and the low temperature impact at -30°C is more than 300J, the CTOD ( Crack Tip Opening Displacement),welding properties and HIC (Hyrogen-Induced Cracking) properties are good, which fully meet customer requirements.

Key words: Steel Tube for Deep Sea, Heat Treatment, CTOD (Crack Tip Opening Displacement), Welding Performance, HIC

摘要： 设计研制了生产深水油气田大口径海底管线用无缝钢管的成分要求和工艺路线。小批量试制X65QO海底管线管，试制结果表明,通过微合金成分优化(/% ：0.15Mo，0.04Nb，0.09V，0.06Ti),皮尔格周轧管工艺，配合930 ℃淬火+670 ℃回火调质工艺,X65QO钢级深海海底管线管屈服强度为~500 MPa,抗拉强度为~580 MPa, -30℃低温冲击功＞300J,裂纹尖端开口位移(CTOD)以及焊接性能和氢致裂纹(HIC)性能较好，完全符合用户的要求。

关键词: 深海海底管线管, 热处理, CTOD(裂纹尖端开口位移), 焊接性能, HIC

Xiong gang , Xia Wen bin , Li Duanzheng , Tian Yan. Development and Application of φ457 mm x 25.4 mm Large Size X65QO Seamless Steel Tube for Deep Subsea[J]. Special Steel, 2021, 42(5): 41-45.

熊刚, 夏文斌, 李端正, 田研. X65QO φ457 mm x 25.4 mm大口径深海海底无缝钢管的开发和应用[J]. 特殊钢, 2021, 42(5): 41-45.

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Development and Application of φ457 mm x 25.4 mm Large Size X65QO Seamless Steel Tube for Deep Subsea

X65QO φ457 mm x 25.4 mm大口径深海海底无缝钢管的开发和应用

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