Prefab House, Container House, Folding House manufacturer / supplier in China, offering Mild Steel Flat Bar Q195 Q235 Q345 A36 S235jr 4130 1020 Flat Steel Bar, Alloy Metal Iron 3mm 10mm High Carbon Ms Flat Bar A36 Q235, ASTM A36 Mild Steel E24 En8 65mm Hot Rolled Spring Flat Roll Steel Bars and so on.