A butt weld flange (abbreviated as SW flange) has a recessed area (like a shoulder) in the internal hole. This collar serves as a guide to fix the depth of insertion of the pipe into the flange. As a manufacturer located in China, we are proud to present our high-quality products to trading partners around the world.

A butt weld flange is similar to an overlay flange - the design is an overlay flange with a projection (called a bell) in the internal hole. The thickness of this socket usually corresponds to the wall thickness of the connected pipe. Our ANSI B16.5 Class 300 Butt Weld Flanges are designed by our experts using advanced technology and the highest quality materials.

Butt weld flanges were originally developed for use in small diameter, high pressure pipelines. Their static strength is comparable to slip-on flanges, but the fatigue strength is 50% higher than double-sided welded slip-on flanges. As a manufacturer based in China, we specialize in supplying high-quality industrial products to overseas partners. We are proud to present our products - ANSI B16.5 class 1500 butt weld flanges, which we recommend to the attention of our valued partners.

Butt welding flanges have high rigidity, small welding deformations and good sealing properties, and can be used at pressures from 1.0 to 10.0 MPa. As a leading manufacturer in China, we are proud to introduce our newest and most innovative product, JIS 5K Butt Weld Flanges. This product is designed to provide our customers with an easy to use, reliable and durable solution for their industrial needs.

The design of a butt weld flange resembles an overlay flange with a collar (socket) in the internal hole. JIS 20K Butt Weld Flanges provide a high quality and reliable solution for simple pipe connections. This product is specifically designed to meet the requirements of industries such as oil and gas, petrochemical and shipbuilding.