High-quality stainless steel 45° elbows are mainly stainless steel. The chemical composition contained in stainless steel will keep the surface of stainless steel elbows from being corroded and rusted for a long time. When cleaning high-quality stainless steel 45° elbows, we need to do the following two aspects:

　　1. High-quality stainless steel 45° elbows are treated with alkaline cleaning, water-soluble cleaning agents, chlorine solvent sandblasting, shot blasting and other methods according to the requirements and surface conditions of the workpiece;

　　2. For the treatment of high-quality stainless steel 45° elbows, pickling is generally not used.

　　Correct cleaning of high-quality stainless steel 45° elbow can improve its safety performance and prolong its service life. The electrode should be kept dry when used. The titanium calcium type should be dried at 15°C for 1 hour, and the low hydrogen type should be dried at 200-250°C for 1 hour to prevent the electrode coating from sticking to oil and other dirt, so as not to increase the carbon content of the weld. quantity and affect the quality of the weldment.

　　When high-quality stainless steel 45° elbows are welded, they are repeatedly heated to precipitate carbides, which reduce corrosion resistance and chemical properties. After welding, the hardenability is large, and cracks are prone to occur. If the same type of electrode is used for welding, it must be preheated above 300 °C and warm and cooled at about 700 °C after welding. If the weldment cannot be subjected to post-weld heat treatment, a chrome-nickel stainless steel electrode should be used.