ERW, SMLS, EFW, SAW Technical Features: ASTM A106 GR.B, ASTM A53 GR.A/B, ASTM A333 GR.1/6/3, ASTM A335 P5/P11/P22 Size (inch) Thickness/Schedule (SCH) 0.5 – 24 5, 10, 20, 30, 40 (STD), 80, 120, 160