Slip-on flange 1,Material: Stainless Steel, Carbon Steel, Alloy Steel ... /8" to 64" 3,Standard: ANSI,DIN,BS etc. Slip-on flange Production standard: GB/T9112~9124-2000 JB/T81-94 ... : Carbon steel: 20# Q235 A234 WPBTypes: Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges ... polyethylene film steel cases or as customer’s request. Slip-on flange