Q550D high yield strength structural steels in the 550 high-strength plate. D represents the 0 degree impact eligibility. Grades Q550D; Standard: GB / T on 16270-2009 GB / T1591-2008 Holford Road Industrial Co., Ltd. - (focused high-strength steel !!) Tel: 021-3607080 Sun Xiaoxiao 13,701,664,517 mainly used in important (low) high intensity structural parts, construction machinery, mining and other steel structures. The thickness of the width of the 2000-3000 6-100 steel; generally Jigang; Angang; Wuyang; Dragons much. -------------------------------------------------- ------ high-strength structural steel Q550D 6 * 1500 * L Shougang Jigang high strength structural steel Q550D 10 * 1500 * L Shougang Jigang hundred percent stock price high-strength structural steel Q550D 12 * 1800 * L Shougang Ji steel high-strength structural steel Q550D 16 * 2000-L Shougang Jigang high strength structural steel Q550D 18 * 2200 * L Shougang Jigang hundred percent stock price high-strength structural steel Q550D 20 * 2200 * L Shougang high-strength structural steel Jigang Q550D 30 * 2200 * L Shougang Jigang high-strength structural steel Q550D 35 * 2200 * L Shougang Jigang hundred percent stock price high-strength structural steel Q550D 40 * 2200 * L Shougang Jigang high-strength structural steel Q550D 45 * 2200 * L Shougang Jigang high-strength structural steel Q550D 50 * 2200 * L Shougang Jigang high-strength structural steel Q550D 55 * 2200 * L Shougang Jigang high-strength structural steel Q550D 60 * 2200 * L Shougang Jigang hundred percent stock price high strength structural steel Q550D 80 * 2200 * L Shougang Jigang quality products, reasonable price and satisfactory service is our eternal management policy. The same breath, the same growth; a common destiny, a total of development, so that the entrepreneurial spirit and personification of corporate values, to achieve "unity of human enterprise." "Cooperative competition, alliance win, win-win model" is our long-term development goals.