Stainless steel pipe fittings have many precautions in transportation and processing.In specific use, they need to be designed according to the corresponding methods and principles.The arc starting of the multi-pass and multilayer welding of stainless steel pipe fittings adopts the reflow method, and the arc should be filled with arc craters.
Stainless steel pipe fittings are divided into threaded pipe fittings and welded pipe fittings. According to the material, they can be divided into 304, 321, 310, etc., and the production standards are divided into international standards, American standards, and German standards. Pipe fittings made of stainless steel, including stainless steel elbows, stainless steel tees, stainless steel crosses, stainless steel reducers, stainless steel caps, etc. When selecting branch pipes to connect pipe fittings to lead branch pipes from the main pipe, if the pipe diameters are the same, three-way connections should be used as much as possible; when the branch pipe diameter is less than or equal to DN50, in the reducing range of the three-way or outside the scope of application, use branch stand and stainless steel pipe fittings Branch pipe connection pipe fittings such as half pipe joint or reinforced pipe joint.
The commonly used connection methods of stainless steel pipe fittings are butt welding connection, socket welding connection and pipe thread connection. Generally, DN50 and above pipes use butt welding to connect stainless steel pipe fittings, and pipes below DN50 use socket welded stainless steel pipe fittings or threaded connection pipe fittings and sealed welded pipe fittings. The selection should first be based on the design pressure, design temperature and design temperature of the stainless steel pipe system. The nature of the medium in the pipe, followed by consideration of economy, life and other comprehensive factors, forging the pipe fittings and determining the working pressure-temperature grade of the pipe fittings according to the design pressure and design temperature of the stainless steel pipe system. When the material is lifted, it should not be in direct contact with other metals, and should be padded with non-metallic materials such as wood or rubber.
