Welded elbow manufacturer? Choice for Thai Extension pipeline, I produced a thin-walled elbow in the country has a certain high reputation, is respected domestic product, the company refined quality products and good services to build corporate image at reasonable prices to win market, to science and technology, make every effort to develop new products, establish excellence, the pursuit of excellence in entrepreneurial spirit, adhere to the "family first" principle to provide our customers with quality service, welcomed patrons! Large Diameter thin-walled elbow bend, it is the use of the same material of the plate and pipe stamping die stamping them into halves ring elbow, then two half-ring shaped elbow were set for welding. Because different types of pipeline welding standards, usually in groups of semi-finished products to the point of solid factory construction site pipeline welding seam according to grade, therefore, also known as the two halves welded elbow. Welded elbow is a good elbow, widely used and promoted in different fields and industries, to varying degrees of application and popularization. Stamping elbow is the use of the same material of the plate and pipe stamping die stamping them into halves ring elbow, then two half-ring elbow were set for welding forming, stamping elbow welding processes need to follow certain production and processing . The following methods explain the precautions and stamping elbow, in the use of strict attention to ensure the quality and performance of stamping elbow, it has a good life. Stamping elbow after welding hardening large, prone to cracking, use in welding different welding electrodes, ensure the quality of the welding of stamping elbow. If using the same type of chromium stamping elbow welding rod must be more than 300 ℃ preheat and post-weld about 700 ℃ slow cooling process. If you can not weldment after weld heat treatment should be used chromium-nickel stamping elbow. Different types of electrodes with different performance and features in use in use in accordance with the corresponding need to use, protect the quality of the welding of stamping elbow. To improve the corrosion resistance and punching elbow weldability, and appropriately increase the right amount of stability elements Ti, Nb, Mo, etc. in the production, welding elbow better than the chrome stamping. When using the same type of chromium stainless steel stamping elbow, should be tempered after more than 200 ℃ preheating and soldering 800 ℃ or the. If the weldment is not subjected to heat treatment should be used chrome-nickel stainless steel stamping elbow. Stamping elbow with good corrosion resistance and oxidation resistance, good features to facilitate their use and promotion in different fields, widely used in chemical, fertilizer, petroleum, medical machinery.