Stainless steel seamless pipe is our main products. Detailed information is as following, Standard:ASTM312,213,269,SA213 Material: TP304,316,304L,316L,310S,202, 347 Size: 1/8" to 12" WT: SCH5,10,40,80,160 CERTIFICATE: ISO9001:2000 http://www.ecnsteel.com is our company website for u to find more information about our products. By the way, u can contact me directly through my E-MAIL/MSN：koontzfan1314@hotmail.com or my yahoo messenger: yayazhj00