An offshore platform that provides production and living facilities for offshore drilling, oil production, transportation, observation, navigation and construction activities.


According to its structural characteristics and working conditions, it can be divided into fixed, movable and semi-fixed. The lower part of the fixed platform is directly supported and fixed on the seabed by piles, enlarged feet or other structures, and is divided into pile foundation type and gravity type according to the supporting conditions. The movable platform floats in the water or on the seabed and can move from one well to another. Depending on the support, it can be divided into two types: bottom type and floating type. In recent years, a new type of semi-fixed offshore platform has been studied which can be fixed in deep water and is maneuverable. The tension leg platform belongs to this category.


Foreign marine platform material number
S355G2 + N, S355G3 + N, S355G5 + M, S355G6 + M, S355G7 + M, S355G7 + N, S355G8 + N, S355G8 + M, S355G9 + N, S355G9 + M, S355G10 + N, S355G10 + M, S420G1 + M, S420G1 + QT, S420G2 + M, S420G2 + QT, S460G1 + M, S460G1 + QT, S460G2 + M, S460G2 + QT


For the development of offshore platform steel plates, materials such as S460G2 + QT / EQ43-EQ51 / S355G10 + N / A517GrQ / NVE690 are widely used. Confirmed and optimized the production process of EQ43-EQ51 and WDB620E, and carried out trial production of 177.8mm, 185mm, 215mm thick A517GrQ steel plate, obtained ABS classification society certification, completed the trial production of S355G10 + N, different thickness specifications 25-110 The test results of the steel plate are good, and the performance indicators fully meet the standard requirements. Marine engineering marine steel plate NVE690 was successfully trial-produced and put into mass production and delivered to customers. Expand the share of steel for marine engineering to replace imports. Developed 150mm grade A514GrQ high strength steel, which is the first quenching thickness grade in China. It has been applied to the manufacture of offshore jack-up platforms and has been certified by ABS and other classification societies in the United States.