Welding Neck Flange
Classification:
Steel flange
Key words:
Hengjia Pipeline
Valve
Product Details
Welding neck flange with neck butt welding steel pipe flange, also known as butt welding flange
Butt welding flange is not easy to deform, has good sealing, has a large distance from the joint surface, and the joint surface is free from deformation at welding temperature. It adopts a relatively complex horn shape structure and is suitable for pipelines with large fluctuations in pressure or temperature or pipelines with high temperature, high pressure and low temperature. It is generally used for connecting pipelines and valves with PN greater than 2.5MPa. It is also used on pipelines transporting expensive, flammable and explosive media. Butt welding flange is generally made of forging or forging and rolling process, and shall be tested by ultrasonic flaw detection without delamination defects.
The common implementation standards for welding flanges are HG/T20615-2009,GB/T9115.1-2000,JB/T86.2-94,CB/T47-1999,ANSI B16.5, etc., which can be customized according to customer requirements. Common material: ASTM A105 Q235B 20# 16Mn Q345B SS304 SS316L 12Cr1MoV 15CrMo SS304 SS316L, etc.
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