F91 flange

The common F91 flanges are flat welding flange and butt welding flange. There is no large diameter threaded flange. In the actual production and sales, flat welding products account for a large proportion. The structure and application range of flat welding large diameter flange and butt welding large diameter flange are different, and their features and advantages will also be different. Therefore, they should be used in accordance with different ranges, and the protection of flange plays an important role. The rigidity of large diameter flat welding flange is poor, and it is suitable for the occasion with pressure p ≤ 4MPa; Butt welding flange, also known as high neck flange, has greater rigidity and is suitable for the occasion with higher pressure and temperature

F91 flange is one of the flanges, which is widely used and promoted in the machinery industry, chemical industry, wind power industry and sewage treatment industry, and is highly praised and favored by users. F91 flange has a wide range of uses, and its production process can be divided into rolling and forging, and the big one can only be rolling. The materials are carbon steel, stainless steel and alloy steel