Long neck flange: With a higher neck height, the stiffness and load-bearing capacity of the flange are improved. Compared with butt welding flanges, the welding workload is large, the consumption of welding rods is high, and it cannot withstand high temperature, high pressure, repeated bending, and temperature fluctuations. However, on-site installation is more convenient, and the process of welding seam rubbing can be omitted, which is more popular.

Manufacturing standard: HG/T20615-2009, ASME B 16.5 Connection method: flange nut, bolt connection

Production process: professional overall forging, forging manufacturing, etc

Processing methods: high-precision CNC lathe turning, ordinary lathe precision turning, argon arc welding and other processing

Application scope: Boiler and pressure vessel, petroleum, chemical, shipbuilding, pharmaceuticals, metallurgy, machinery, food and other industries