About Mild Steel, Carbon Steel, & Cast Iron Round Bar (Besi Bulat / As Bulat)

Mild Steel, Carbon Steel, & Cast Iron Round Bar (Besi Bulat / As Besi)
Standard : S275, S355, SS400, ST41, S20C, S45C, SCM415, SCM440, AISI 4140, AISI 4340.
Diameter : 10mm to 1500mm
Lenght : 6 Meters