... / ASME, GB, JIS, DIN seamless pipe / seamless steel tube / SSTU weldless pipe / seamless steel pipe / seamless tube / solid-drawn steel pipe / Square Pipe / Rectangular Pipe / square pipes/ rectangular pipe / stainless steel tubesFeatures:1)Standard: ASTM / ASME ... : 5%), 301 (Ni : 6%), 304, TP304, TP304L/304L, 321, TP321, 316, TP316L, 316L, 316Ti, 317, 317L, 309S, 310S(2520), 347, Duplex ...