Stainless steel seamless pipe Product Description Standards: ASME/ASTM: A312, A269, A213, DIN 17456, etc. Steel Grade: TP 304, 304H, 304L, 316, 316L, 316Ti, 317, 321, 321H, 347, 347H, 309S, 310S, etc. Outside diameter from 6mm to 530mm. Wall thickness from 0.5mm to 38.1mm. Marking: material grade, standard, specification, heat no. Length: Unbending length or fix length Package: Knitting strip bundle, wooden box or steel box Mill test certificate: According to EN 10204 3.1B Value added service: Third party inspection Bright annealed, polished outside and inside surface.