... steel Size: 1/2-78 inch, DN15-2000 Standard: ANSI, JIS, DIN, UNI, BS 1. GOST 12820-80,12821-80 flanges ... , 1500LB, 2500LB WNRF, WNFF, SORF, SOFF, THRF, SWRF, LJRF flanges4. JIS flanges (SS400, SF440A)5K, 10K, 16K, 20K, 30K, 40KSOPFF, SOPRF, SOHFF ...