Large diameter flange is a flange, in the machinery industry, sewage treatment industry transfer these things is not very smooth in the industry, has a wide range of effect, is favored by consumers. Large diameter USES are very wide, the way of production is divided into rolling and forging. Some very large caliber flanges are only available through the scrolls. The large diameter flange is usually made of carbon steel, stainless steel and alloy steel.

The large diameter flange is common with flat welding flange and butt welding flange. In the real production and sale, the proportion of flat welding will be a lot. The rigidity of large diameter flat welding flange is poor, applying pressure p<= 4Mpa. Butt welding flange, also known as high neck flange, rigid and large diameter flat welding flange is much larger. It can be used for high temperature occasions. It should be noted that the use range of flat welding large diameter flange and butt weld flange is different.