... as customers' drawings for special use.3. Materials: Carbon steel, Stainless steel and Alloy steel etc.4. Pressure Ratings: Class 150, 300, 600 ... , PN25, PN40 and PN64 JIS 5K, 10K, 16K and 20K 5. Type: Slip-On, Welding Neck, Blind, Socket Welding, Threaded, Lap ... : Information is available upon receipt of your enquriy ANSI B16.5 forged steel flanges