... , BS10, BS4504, SAN1123, 1000/3, 1600/3, 2500/3, T/D, T/E, T/F, AS2129, etc.4-Japanese (JIS) Standard:SS400, SF440, 5K ... , Socket Welding Flanges;OD Size: 1/2 inch -40 inches;Material: Carbon Steel, Stainless Steel and Special Alloy Steel;Pressure:75 ...