flat bar,aluminum flat bar,SS330, SS400, S10C, S20C, S45C, S50C, SWRCH43K ASTMCarbon Structural Steel1010, 1017, 1020, 1045, 1046, 1050,Alloy structural steelA572 Grade 50Spring steel15,669,260JISCarbon Structural SteelSS330, SS400, S10C, S20C, S45C, S50C, SWRCH43KAlloy structural steelSM490Spring steelS60C-CSP, SUP6 flat bar,SS330, SS400, S10C, S20C, S45C, S50C, SWRCH43K