Precautions for stamping elbow processing

Stamping elbow is a good elbow, which has been widely used and promoted in different fields and industries. The stamping elbow is formed by the same die as the pipe, and then the two half ring elbows are welded in batches. Due to the different welding standards of various pipes, they are usually semi-finished products fixed in groups. The field structure is welded according to the welding level of the pipeline, so it is also called two half stamping elbow.

Stamping elbows

After welding, the stamping elbow has great hardenability and cracks easily occur. If the same type of stamping elbow is used for welding, the elbow pipe must be preheated above 300 ℃ and slowly cooled about 700 ℃ after welding. If the weldment cannot be PWHT. The stamping elbow electrode should be selected. In order to prevent the indirect erosion of stamping elbow due to heating, the welding current should not be too large, about 20% less than carbon steel electrode, the arc should not be too long, the interlayer should be cooled quickly, and the narrow weld bead is suitable. Stamping elbow has certain corrosion resistance, heat resistance and wear resistance. It is usually used in oil, natural gas, chemical, hydropower, construction and boiler industries.

Haihao Group manufacture elbow products for about 40 years,the products sells well all over the world for the high quality.If you have any question,please contact us! Email:sales@haihaogroup.com