ASTM 304 Stainless steel round bar .we professionally machining and prroduce forged heavy ... are mainly applied in machinery,chemical and petroleum industries,mould,shipping,transportation,agriculture,pipeline,metallurgy,GI,ETC.3,we ... "Classification Society".5,we usualy use material of steel type of 15#,20#,25#,30#.35#,40#,45 ... we can render excellent heat treatment. ASTM 304 Stainless steel round bar