Overseas Platform Material Number
S3555G2 + N, S355G3 + N, S355G5 + M, S355G5 + M, S355G5 5 + M, S355G6 + M, S355G7 + M, S355G7 + N, S355G8 + N, S355G8 + N, S355G9 + N, S355G9 + M, S355G9 + M, S355G9 + M, S355G9 + M, S3555G9 + M, S3520G1 + M, S420G1 + M, S420G1 + G + M, S420G1 + QT + QT, S420G2 + G + M, S460G1, S460G1, S460G1 + G1 + G1, S460G1 + G2 + QT.


With the country's entry into the deep sea, a large number of offshore platforms have emerged, and the domestic supply of offshore platforms has increased rapidly. Offshore platform plate is mainly used for offshore oil and gas drilling, platform pipe joints and other structural parts production; ABS of the United States, BV of France, LR of the United Kingdom, GL of Germany, DNV of Norway, RINA of Italy, NK of Japan, CCS of China, KR of Korea and other classification societies certification, can do Z15/Z25/Z35 offshore platform steel plate R&D, Hunan Standard Steel Co., Ltd. successfully test. Production of two 50/100 thick S460G2 + QT steel plates, S460G2 + QT / EQ43 - EQ51 / S355G10 + N / A517GrQ / NVE690. The production processes of EQ43-EQ51 and WDB620E were confirmed and optimized. 177.8 mm, 185 mm and 215 mm thick A517 GrQ steel plates have been trial-produced and ABS certified. Complete the S355G10 + N test and specify the thickness of 25 - 110. The test results of the steel plate are good, and the performance index can fully meet the requirements of the standard. Successful commissioning of NVE690 marine engineering steel plate and put into mass production, delivered to customers. Expanding the use of steel plates for offshore engineering to replace imports. A 150 mm grade A514 GrQ high strength steel has been developed, which is the first quenched thickness grade steel in China. It has been used in offshore jack-up platform manufacturing, and has been certified by ABS and other classification societies in the United States.


Hunan Standard Steel Co., Ltd. can produce A517GrQ steel for offshore oil drilling rig. It began production in 2009 and has been certified by many authoritative classification societies. In order to expand the production capacity and meet the market demand of large offshore platform steel, Hunan Standard Steel Co., Ltd. has opened up a new heat treatment process route for 177.8mm thick offshore platform steel A517GrQ, striving to improve the production capacity of products. With the development of deep-sea drilling in various countries, the rack steel with thickness of 177.8 mm has become a major international specification and has been used to manufacture one of the most important components of deep-sea jack-up offshore platform. The A517GrQ produced by Hunan Standard Steel Co., Ltd. has reached the international advanced level.


The legs of offshore platforms are mainly made of DH36/EH36, and can be made of Z15/Z25/Z35 with a thickness of 8-200.