Local thinning is a common defect of elbow, but the research on this kind of defect is mainly aimed at straight pipe at home and abroad, and there are few literature reports on local thinning of elbow. Through detailed finite element calculation and theoretical analysis, this paper studies the influence of local thinning on the ultimate bearing capacity of elbow under internal pressure and bending moment, as well as the mutual interference effect of multiple local thinning under internal pressur

Tees are pipe fittings and pipe connectors. Also known as pipe fitting tee or tee pipe fitting and tee joint, it is used in the main pipeline to be branched. According to the pipe diameter size, 1. The nozzle ends of equal-diameter tees are all of the same size; 2. The nozzle size of the main pipe of the reducing tee is the same, while the nozzle size of the branch pipe is smaller than that of the main pipe. According to the process, 1. Hydraulic bulging of tee joint is a forming process of expa

Although the wear-resistant elbow has a wide range of applications and has a positive impact on people's lives, there are still many parts that need attention in the process of use. Wear-resistant elbows are widely used, and the precautions for using wear-resistant elbows with different materials are also different. One thing that can't be ignored in the construction of wear-resistant elbows is soil quality, and of course there are comprehensive factors of geology and various aspects. For cerami

The production process of flanges is mainly divided into four types: forging, casting, cutting, and rolling. The flanges produced by casting and forging flanges have accurate blank shape and size, small processing volume, and low cost, but there are casting defects (pores, cracks, and inclusions); The streamline of the internal structure of the casting is poor (streamline is worse if it is a cutting part); Forged flanges generally contain less carbon than cast flanges and are not easy to rust. F