New Century Forging Co., Ltd
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Long welding neck flange is the neck height is higher, which improves the rigidity and bearing capacity of the flange. Compared with butt welding flanges, the welding workload is large, the welding rod consumption is high, and it cannot withstand high temperature and pressure, repeated bending and temperature flutuatuins, but it is more convenient for onsite installation and omit the process of welding seam scratching, which is more popular. Long welding neck flange is similar to a standard Welding Neck Flanges, but the neck is considerably longer than other flanges. LWN flange is often used as a nozzle for a barrel or column. This is the most common type of high pressure pipe flange. They are distinguished from other types of pipe flanges by their long tapered hub and gentle transition of thickness in the region of the butt weld joining them to the pipe. The long tapered hub provides an important reinforcement of the Weld Neck Flange proper in terms of strength and resistance to dishing.
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