Dear my friend, Have a good day! Our factory is one of the leading manufacturer of seamless stainless steel pipes and round bars, pipe fittings,flange, coil,etc.. our annual output is 10000 metric tons pipes and 100000 metric tons round bar. Below is some data of our Seamless Stainless Steel Pipes, Standard: ASTM A-312, A-213, A-269, A-249. A270 Materail Grade: TP201,TP202, TP304, TP304L, TP316L, TP321, TP310S, TP904, TP317L, etc. Out-Diameter: 6mm--355.6mm Wall-thickness: 0.8mm--42mm Length: exact or random as per buyers' requirements Finish: Pickling / Polishing Stainless steel round bar: 65mm to 300mm 304 316L 321 304L,etc Stainless steel fitting ,TP202, TP304, TP304L, TP316L, TP321, TP310 STAINLESSS STEEL FLANGE Type: WN, THREADE, SO, SW, LJ, BL ASTM A182 304 316 321 F347H,etc STAINLESS STEEL COIL 202 304 316 321 310S ,ETC Should you need any further clarification, do not hesitate to contact me. Awaiting for your early reply