... On,Blind,Socket Weld ect. 3.Standards: ANSI,API 6A ,DIN Flange Type Weld Neck,Slip-On,Blind,Socket Weld,LapJoint ... Welding Flanges, Threaded Flanges, Plate Flanges . Spec–blind,anchor flange ,swivel flange .3. Standard: ANSI B16.5, B16.47,B16.36 ... , MSS SP-44, API, DIN, JIS, HG, GB, JB etc. ... flanges and forgings that customers require . DIN SAE flange