Butt welding flange high pressure

Welding flanges are generally made by forging or forging. When made of steel plate or section steel, the following requirements must be met: 1. The butt welding flange should be ultrasonically inspected without delamination defects; 2. It should be cut into strips along the rolling direction of the steel, and bent and welded into a ring , and make the surface of the steel form a ring cylinder. Steel plates shall not be directly machined into welded neck flanges; 3. The butt welds of the rings shall be full-penetration welds; Ultrasonic flaw detection, and the radiographic flaw detection meets the II requirements of JB4730, and the ultrasonic flaw detection meets the I level requirements of JB4730.Weld Neck Flange       Material     Carbon steel ASTM A105, A350 LF1, LF2, LF3, LF6, CL1/CL2,; A694 F52, F60, F65, F70;…