... over 10 years experience 100% BELEC Spectrum testing PL Flanges: (1) Flanges Type: Plate-type Flat Welding Flange, Butt Welding Ring ... Lap Joint Flange(2) Flanges Standards: ANSI Flanges, BS flanges, DIN flanges, EN1092-1 Flanges(3) Material: Carbon steel flanges ASTM A105, ASTM A350 ... F304/304L, F316/316L, F316H, F310, F321F44 (UNS S31254) Alloy Steel flanges ASTM A182 F1, F5a, F9, F11, F12, F22, F91 ...