When flange products are cut and manufactured, due to unreasonable technology, residual stress and cracks, under the conditions of pipeline use, stress corrosion of stainless steel flanges, crack propagation of flange pipes, leakage or brittle rupture cause failures .
According to the requirements of the software material manufacturing process, when cutting flange products, conversion should be performed, heat treatment should be performed to eliminate residual stresses, and cracks on the surface should be ground to eliminate stress concentration. When welding flange products, if uneven heating will melt Welds, and welds are connected after cooling, because the thickness of the weldment is more stringent than other constraints.
The stainless steel flange elbow fitting manufacturer asks the customer if they need to take a film, what does this mean? This pair of welding elbow fittings can be peeled off and the strip is 100%. Inspection and welding, but if there is no film, there is also a defect inspection and welding report, and it is not necessary to report defect inspection. This is the quality requirement for butt welding elbows. Strips are welding elbows. Defects in head accessories.