and the surface of the steel to form a cylinder of the ring. Steel plate shall not be machined directly into neck butt welding flange; 3. The butt weld of the ring should adopt full penetration weld; 4. The butt weld of the ring shall be subjected to post-welding heat treatmen...
1. Face: Can be raised face(RF), full face(FF), Ring joint(RTJ) , Groove, Tongue, or customized. 2.Bevel end as per ANSI B16.25 3.CNC fine finished. Face finish: The finish on the face of flange is measured as an Arithmetical Average Roughness Height(AARH). The finish ...