1,black steel plate 2,1.22m*2.44m 1.5m*6m Hebei Runcheng Steel Pipe Co., Ltd. is located in the historic city ... ,20, # #, specifications:6-720* 1-70mm 11 Low and medium pressure boiler pipe steel grade GB3087-1999, 10, 20: # #, specifications: 6-720 ... in the mechanical project.Contact wayQQ 2368582938Skyp runchenggangguan ASTM A36 steel plate/coil