Flange for pressure level is relatively low, the pipeline system pressure fluctuation, vibration and shock are not serious in. Flange welding flange assembly has the advantages of easily on, so it has been widely used. Suitable for boiler and pressure vessel, chemical, construction, water supply, drainage, oil, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, electric power, aerospace, shipbuilding and other infrastructure projects. Chinese Zhangqiu Mingyuan Machinery Co., Ltd. specializing in the production of Japanese standard, German standard, American Standard, non - standard, European standard, British standard, standard, can meet a variety of harsh conditions, according to customer requirements, customized equipment flange, according to the drawing processing production.