... of welding neck, socket welding, threaded, blind, slip on, lap joint are in accordance with ANSI B 16.5 from 1 ... Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,6. Inspection:factory in-house self check or Third Party inspection7. Packing:No ... :Within 30days for 1000tons10.Supply Capacity: 10000tons per year steel c profile