Our company is one of the leading stainless steel pipes manufacturers in China, being in this field for over 10 years. We have professional technicians and completed quality assured system. We mainly produce seamless stainless steel round pipes, and and the standard and materials are as following: Standard: ASTM A312, A269, A213, JIS G3459, G3463, DIN 17458, dual standard, and so on. Materials: TP 304/304L, 316/316L, 321, 310S, 317, 347, 347H, UNS S31803, etc. About the dimensions, O.D. sizes range from 10mm to 356mm, and W.T. sizes range from 1mm to 8mm. And the max length is 13 meters. If you have any other question, please feel free to contact me. I will be always in your service. Also you can visit our website--www.mgs-stainless.com to get more information about us. Look forward to your prompt reply. Show More