The manufacturing process of the high-pressure elbow first welds a polygonal ring shell with a polygonal cross-section or a polygonal fan-shaped shell with closed ends. After the interior is filled with pressure medium, internal pressure is applied. It becomes a circle and eventually becomes a circular ring shell. According to the needs, a circular ring shell can be cut into 4 90 elbows or 6 60 high-pressure elbows or other specifications of high-pressure elbows. Any size large elbow with a ratio of the inner diameter to the inner diameter of the punched elbow greater than 1.5 is an ideal method for manufacturing large national elbows.
The high-pressure elbow is suitable for pipeline systems in the petroleum, natural gas, chemical, hydropower, construction, and boiler industries. It does not require tube blanks as raw materials, which can save the cost of tube manufacturing equipment and molds, and can obtain any large diameter and relatively thick wall thickness. Thin national elbow. Due to the above two reasons, the manufacturing cycle can be shortened, and the production cost is greatly reduced. Because it does not require any special equipment, it is especially suitable for on-site processing of large national elbows. The blank is a flat or malleable surface, so the cutting is simple , The accuracy is easy to guarantee, and the assembly and welding are convenient.
