The raw material pipe of Stainless Steel Weld Elbow is also one of the factors that affect the quality of stainless steel elbows. When we manufacture elbows, in addition to the standard size requirements to be controlled within the tolerance range, we also require users to select the corresponding elbow pressure according to the bending pipe diameter when using it. The pipe industry established by the stainless steel elbow manufacturer briefly introduces the bendability of stainless steel elbows.

The bendability of the pipe itself and the surface corrosion work may also affect the quality of stainless steel elbows. When working on site, the operator also needs to understand the data of the processed pipe, the processing performance and the surface corrosion work to make a judgment.

When bending, the outer arm wall of the inner layer of the pipe is thinned by the tensile stress under the effect of the external force distance M, and the inner side is thickened by the compressive stress. The combined forces N1 and N2 change the cross-section of the pipe. Based on this factor, the main reason for the deterioration of the quality of stainless steel elbows is RX and SX. Therefore, GBJ235-82 has made clear provisions for the RX value and the thinning amount of the outer side under various pressure levels. The purpose is to control the values ​​of RX and SX, so as to ensure the quality.