Butt weld flanges are widely used in different industries, this is one of the popular type of industrial flanges. The range of use is determined according to different characteristics. They are mostly used in the case of moderate medium conditions, such as low pressure non-purifying compressed air and low pressure circulating water. Its advantage is that the price is cheaper. Butt weld flanges are suitable for connection of steel pipes whose nominal pressure does not exceed 2.5MPa. The sealing surface of butt weld flanges can be made into three types of smooth, concave and convex. Smooth butt weld flange application of the largest amount, the other two methods of butt weld flange is also common in use.
Butt Weld flange is not easily deformed, with well sealed, so they are widely used. They have the corresponding rigid and elastic requirements and a reasonable butt welding thin transition, welding seam from the joint surface distance, so the joint will not be affected by the welding temperature deformation. They have a more complex body structure, so they are suitable for pressure or temperature fluctuations in the pipeline or high temperature, high pressure and low temperature pipe, generally used for PN greater than 2.5MPa pipe and valve connections; also used to transport prices Expensive, flammable, explosive medium on the pipeline.