black steel seamless pipes sch40 astm a106 Material: ASTM A106 Gr.B,20# Outer diameter:1/8"-46" Thickness:0.068"-2.343" black steel seamless pipes sch40 astm a106 1. Material: ASTM A106 Gr.B,20#2.Dimension: Outer diameter:1/8"-46" Thickness:0.068"-2.343" Length:5800mm,6000mm,or according to your requirements3. Here are some sizes for your reference: we can also offer other sizes besides these ...