We're a manufacturer of stainless steel seamless pipe from China.Our company web is http://www.china-stainless.com/en/ The description of the stainless steel seamless pipe are as follows: Diameter:6-530; Grade:TP304,304L,316,321 etc. Thickness: 10S,40S,80S If you have any qustion, pls feel free to contact me, thank you!