... best service . 304 Stainless Steel Bars (stainless steel round bar, angle bar , flat bar , channel bar , hexagon bar , square bar .)1.grade:201,202,301,302,303,304,304L,308,309 ... as hope to be your golden supplier. DescriptionStainless Steel Bar, Steel Round Bar, Steel BarMaterial201,202,304,304L,309S,310S,316,316N,316L,321,347H,430,430FDiameter4mm ...