Quality :Grade A Certificate:ISO9001:2000 Material: carbon stee ,stainless steel ,forged carbon steel ,alloy Product ... , SH AND HG Material Carbon, Stainless, Alloy Certificate API, ISO9001: 2000, CCS Packing wooden cases or customerized Production Capacity 11000 tons ... , X46, X52, X56, X60, X65, X70, X80 Carbon Steel Pipe (CS-PIPE00026)