DN2000 ANSI B16.5 150LBS A105 Forged Steel Flanges

ANSI B16.5 150LBS Weld Neck Carbon Steel Pipe Fitting Flanges

Welding quality

As for iron plate welding flanges, many customers question whether the quality of iron plate welding flanges is better than forged welding flanges. In fact, the quality of iron plate welded flanges is the same as that of forged welded flanges, but where can iron plate welded flanges not be guaranteed? That is, the material of iron plate welded flanges is the least guaranteed, because In the general process, the density of the iron plate welded flange is not a problem, but during the production process, the blank of the iron plate welded flange is rarely tested. Therefore, after the production, it does not pass The material of the tested iron plate welding flange cannot be guaranteed.

Folding considerations

1: Always use J506 welding rod for manual surfacing and low current welding. Weld in strict accordance with the welding process. 2. After welding a position, use a level to check the deformation of the flange plane. 3. While welding, hammer the weld with an air hammer to eliminate stress.

Flange gasket

The gasket is a circular ring made of a material that can produce plastic deformation and has a certain strength. Most of the gaskets are cut from non-metallic plates, or made by professional factories according to the specified size. The materials are asbestos rubber plates, asbestos plates, PTFE plates, polyethylene plates, etc.; there are also thin metal plates (white iron, (Stainless steel) metal-clad gasket made by wrapping non-metallic materials such as asbestos; there is also a spiral wound gasket made of thin steel tape and asbestos tape. The most commonly used is stainless steel tape and graphite winding. According to the different use environment, asbestos can also be used for the spiral wound gasket. Ordinary rubber gaskets are suitable for occasions where the temperature is lower than 120°C; asbestos rubber gaskets are suitable for occasions where the water vapor temperature is lower than 450°C, the oil temperature is lower than 350°C, and the pressure is lower than 5MPa. It is generally corrosive The most commonly used medium is acid-resistant asbestos board. In high-pressure equipment and pipelines, metal gaskets of lens type or other shapes made of copper, aluminum, 10# steel, and stainless steel are used. The contact width between the high-pressure gasket and the sealing surface is very narrow (line contact), and the processing finish of the sealing surface and the gasket is relatively high.

      Hebei Zexu Pipeline Manufacturing Co., Ltd. has a complete production and operation management system and is one of the first companies in the industry to pass the ISO9001 quality management system certification, HSE environment, and occupational health and safety management system certification. The company has three manufacturing branches for steel pipes, pipe fittings, and boiler vessels, and has functional departments such as marketing department, technology department, purchasing department, production department, inspection department, quality assurance department, and comprehensive department. It has established a complete and complete set of quality, Safety, production and management procedures.
      After years of development, Hebei Zexu Pipeline Manufacturing Co., Ltd. has a nationwide business network and radiates to the United States, India, Pakistan, Russia, the Middle East and other countries and regions.
      Hebei Zexu Pipe Manufacturing Co., Ltd. has always adhered to the business philosophy of honesty, innovation and cooperation to promote development, customer satisfaction and trust as the foundation, sustainable development as the goal, relying on scientific management to improve quality, reduce costs, and create brands. For many consecutive years, it has been awarded as "Advanced Unit for Safety Production Standardization Construction", "Hebei Province Industrial Cluster Leading Enterprise", "AAA Credit Enterprise", "Hebei Province Metal Products Industry Leading Enterprise", "Hebei Province Key Employment Service Enterprise", "Star Enterprise", "Top 50 Industrial Enterprises in Cangzhou City", "Famous Trademark of Hebei Province", "Contract-abiding and Promise-keeping Unit", "Recommended Supplier of Main Auxiliary Equipment for Thermal Power Units" and other honorary titles.