WPB pipe cap

Precautions for the use of WPB pipe cap

1. The materials of WPB pipe cap are generally 304 stainless steel plate and carbon steel, but they are also used for special purposes, such as 310S for heat resistance and 316L for alkali resistance

2. Diameter of the head: the head shall be formed by pressing with abrasive tools. There will be some ground stress in the thick steel plate during stamping, and there will be relative deformation in the case of stamping and stretching, so how to distinguish the diameter of the head accurately depends on the diameter and specification

3. Electric welding of WPB pipe cap and cylinder: in the case of butt welding of head and cylinder, it is determined that the head and cylinder shall be fixed with several average points, and then electric welding shall be carried out uniformly

What should be paid attention to in the application of WPB pipe caps

WPB pipe cap tends to be round under internal pressure and flat under compression, which is opposite to the cylinder connected with it. In other words, the relative radial offset is caused at the connection part, and the mutual lifting offsets most of the radial offset, so that the circumferential stress of the head is reduced. The circumferential tensile stress of the cylinder is reduced. When the elliptical head is connected with the cylinder, there is no convex change. It has a continuous bending radius, which does not create stress, so it can be used in vessels with higher pressure. However, the connection part of the dished head is discontinuous, producing stress, Generally used in low voltage vessels; In the production, especially for the stamping forming and dished head, it is very important to practice