Stainless steel Pipes according to: ASTM A312, A269, A554, A213, ETC. Carbon Steel Pipes according to: API-5L/ASTM A53/A106 GR.B API-5CT ASTM A333 GR.6 ALLOY STEEL PIPES ACCORDING TO: ASTM A213 GR. T11, T22 ASTM A335 GR. P11, P22, P91