Marine engineering steel EQ70

Marine engineering ship steel NVE690 is American Standard grade EQ70 steel. After testing, the performance indicators of the steel can meet the requirements of users. This is the first time Wugang steel R & D marine engineering ship successfully with steel, marking the company in Marine Engineering Steel Research and development has made new breakthroughs.

　　Offshore platform (including oil platforms and rigs) due to erosion and damage to withstand the waves, earthquake and low temperature natural force, the technical indicators of steel demand is extremely high, the key parts such as gear rack, leg steel such as technical standards more stringent. In order to achieve the localization of offshore platform steel, Wugang in 2008 began the development of 140mm thick tempered high-strength steel A514GrQ, which lasted 10 months to succeed. In the thickness of 140mm A514GrQ to achieve mass production at the same time, Wugang and quickly put more thickness of the steel work. In 5 months time, has developed 150mm, 180mm, 215mm and other different thickness of A514GrQ, and successfully passed the ABS classification society certification. This means that China's offshore platform with high-strength steel series of all thick plates, all of Wugang can independently produce.

　　1 chemical composition

　　Chemical composition (melting analysis,%) shall comply with the provisions of the following table. Should report Ni, Mo, Nb, V, Zr, Cu, B.

　　EQ70-Z35, S is not greater than 0.005%.

　　2 dimensions, shape, weight and allowable deviation, surface quality shall comply with the provisions of ASTM A6/A6M.

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