... 8" to 64" 3,Standard: ANSI,DIN,BS etc. Threaded flange Production standard: GB/T9112~9124-2000 JB/T81-94 ... # Q235 A234 WPBTypes: Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges, Lap ... , papermaking, construction, etcPacking: Wooden box, sea-worthy plywood pallets with polyethylene film steel cases or as customer’s request. Threaded flange