... tube / solid-drawn steel pipe / Square Pipe / Rectangular Pipe / square pipes/ rectangular pipe / stainless steel tubesFeatures:1)Standard: ASTM / ASME, GB ... , TP316L, 316L, 316Ti, 317, 317L, 309S, 310S(2520), 347, Duplex 2205, Duplex 22073)Outside diameter: 20*20-300*300 mm, Thickness: 2 ...