Characteristics of high pressure pipe fitting socket weld cap

　　When pipe fitting socket weld cap and is not ready to extend now, ASME B16.11 Pipe Fitting Socket Weld Cap is welded to the pipe and used as an end. Used on pressure vessel, there is a cap on top and bottom, and a straight pipe section in the middle. It is used as a tank of pressure vessel. The ratio of the long axis to the short axis of the rotary elliptical spherical busbar is 2.0.

　　The mechanical properties of pipe fitting socket weld cap are second only to hemispheric head, but better than dish head. Because the depth of high pressure pipe fitting socket weld cap is between hemispherical and dish-shaped head, the requirement of stamping equipment and die, and the difficulty of manufacturing, high pressure pipe fitting socket weld cap is easier than hemispherical head and more difficult than dish head.

　　Regardless of the location of the defect and the material quality of the product being inspected, strict requirements shall be followed to ensure that. In recent years, non-destructive testing academic research is very active, but people are keen to improve the detection level, new equipment, improve means, improve detection sensitivity. Welding inspection is a kind of control means, so people pay more attention to its supervisory function. Considering factors, there is no strict distinction between high pressure pipe fitting socket weld cap and dish cap. Or it is directly Frank that approximate high pressure pipe fitting socket weld cap can be equivalent to replace 2:1 high pressure pipe fitting socket weld cap.

　　There is a common basis: no matter what forming principle and processing method are used to make it. As long as the final internal sample inspection results are within the allowable deviation range of 2:1 high pressure pipe fitting socket weld cap stipulated in GB150-1998 standard, the formed cap belongs to 2:1 high pressure pipe fitting socket weld cap without increasing wall thickness. It can be seen that the allowable deviation occupies an important position in the theory of equivalent substitution. In recent years, the spinning process has brought convenience to the manufacture of large diameter and high pressure pipe fitting socket weld cap. High pressure pipe fitting socket weld cap is widely used in medium and low pressure vessels because of its good comprehensive performance.