Our main products are conform to the standards of ASTM 179, ASTM A192, ASTM A210, ASTM A213, ASTM A333, ASTM A335, ASTM A519, ASTM A312,ASTM A269 etc. OD range: 6-610mm WT range: 0.5-60mm Length Max 25 meters. Please feel free to contact us should you have any questions or comments.