... machinery, shipyard, power station, boiler and heat exchanger. Moreover, we have good cooperation with Chengdu Steel Group Co., Ltd., Baotou Steel Group Co ... ., Ltd., Baoshan SteelCorporation and Tianjin Steel Pipe Group Co., Ltd.in China ... ST45, ST55, CK45, Q235 (B, C, D, E), Q345 (B, C, D, E), 16Mn, 20Mn, 45Mn,27SiMn, 20G, 20Cr, 40Cr, ...