Flat welding flange connection is generally used in the pipeline, in that case, the loose bolt can rotate the pipeline on both sides, and then tighten it can be more convenient to disassemble the pipeline.The flange made of carbon steel is called carbon steel flange;Flat welding flange connection method is also the simplest connection method with cast iron pipe and steel pipe.The flange blind can be used for the inspection of the opening.Flange connection is suitable for pipe fittings with diameter from φ50-315mm.Supporting flange performance characteristics: non - rigid connection, removable, tensile resistance.Flanged connections are usually used as removable connectors on low pressure delivery lines.
 

In recent years, the output of Asian flat welding flanges ranks first in China. Flat welding flanges have threaded connection flanges and welded flanges.Low pressure small diameter threaded flange, high pressure and low pressure large diameter are welded flange, flange thickness and connecting bolt diameter and number of different pressure is different.