Carbon steel flanges to ANSI /API/AWWA/DIN/BS/JIS, 1/ ... -F DIN/BS/JIS 10-4000mm PN2.5-40Material: Carbon Steel, Alloy Steel and Stainless Steel.Type: Flat, Slip on, Blind, Welding ... Neck, Threaded, Lapped, Orifice, Figure 8 Blind, Swivel and etc, we can produce as per buyers special requirements.