How to use the elbowAnalysis of the main reasons for the decline in quality of elbows and methods of attention:1. In pure bending, under the action of external force M, the outer arm wall of its neutral layer is thinned by tensile stress &1, and the inner side is under compressive stress. The result

I believe everyone is very familiar with this common pipe fitting. With the gradual improvement and construction of pipeline facilities, elbows, as one of the pipe fittings, have frequently appeared in people's vision and have been used in fields such as oil transportation, natural gas transportatio