Type: Plate Flange, Flat Slip on Welding Neck Long Blind Socket Thread Screwed Lap Joint Flange Standard: ANSI B16.5, B16.47, B16.36, B16.48, MSS SP44, API6A, BS 4504, EN1092, UNI 2277/2278, DIN 4504 Material: ASTM A105; A350 LF1, LF2, CL1/CL2; A694 F42, F46, ...