... and warehousing:Seamless steel tube and boiler tube company; Alloy pipe company; stainlesspiper and plate company Hardware metal company and round ... ., Baotou Steel Group Co., Ltd., Baoshan SteelCorporation and Tianjin Steel Pipe Group Co., Ltd.in China.With many years' rapid development ... #, 45#, ST45, ST55, CK45, Q235 (B, C, D, E), Q345 (B, C, D, E), 16Mn, 20Mn, 45Mn,27SiMn, 20G, 20Cr, 40Cr, STFA25 ...