What Is A Neck Flat Welded Flange?

The neck flat welded flange is a flange that extends the steel pipe, pipe fittings, etc. into the flange and connects with the equipment or pipe through the fillet weld.

Neck Flat welded flanges with neck are characterized by a raised neck and are usually used to support pipes to prevent deformation and leakage. This raised neck can be cut off during welding.

Neck flat welded flanges are usually used for low - and medium-pressure pipe connections, and their dimensions and specifications are the same as the monolithic flange. In addition, flat welded flange with neck has better sealing performance and higher stiffness, can withstand greater pressure and vibration, so it is also widely used in gas valves, natural gas pipelines and other occasions.

Neck Flat welded flanges with neck are widely used in various ships, especially in situations where liquid or gas transmission is required. For example, oil tankers, chemical tankers, liquefied gas tankers and other vessels that need to transfer liquids and gases in large quantities will use flat welded flanges with neck to connect pipes and other equipment. In addition, flat welded flanges with neck may also be used in other types of vessels such as warships, offshore engineering vessels, tugs and harbor vessels.

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