Below is some data of our Seamless Stainless Steel Pipes, Standard: ASTM A-312, A-213, A-269, A-249. Materail Grade: TP304, TP304L, TP316L, TP321, TP310S, TP347H, etc. Out-Diameter: 6mm--355.6mm Wall-thickness: 0.8mm--42mm Length: exact or random as per buyers' requirements Finish: Pickling / Polishing