Main material: TP304/L,TP316/L,TP321/H,TP310S,UNS S31803,UNS S32205,UNS S32750 We are professional ... /304L, TP310/S, TP316,TP316L, TP316/316L, TP317L, TP321, TP347/H S31803, 904L05) Standards: ASTM (ASME) SA/A213/M ASTM(ASME ... , seamless stainless steel pipe ASTM A213/269 stainless steel U-tube