Welding Neck Flanges
The welding neck flange is connected by welding the pipe to the flange neck, so that the inner diameter of the pipe matches the inner diameter design of the flange, so that the stress is transferred from the flange to the pipe, and the stress concentration at the bottom of the hub is reduced. , This is also a factor that butt-welded flanges are commonly used in high-pressure pipeline applications.
The sealing surface of welding neck flange usually has RF surface, FF surface, RTJ surface and matched sealing surface (M surface, FM surface) (T surface, G surface). When welding neck flange uses RF When facing, the standard height of butt-welded pipe flanges below 400# is 1/16″. The standard height of butt-welded pipe flanges below 400# is 1/4″.
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Yanhao Flange produces pipe flanges of all steel material grades, including carbon steel butt welded pipe flanges, stainless steel butt welded pipe flanges and alloy steel butt welded pipe flanges. At the same time, we provide you with ASME/ANSI B16.5 and ASME B16.47 standard welding neck flange dimensions and a separate page in PDF format.
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In addition, we also have a size repository for JIS flanges, DIN flanges and other flange specifications. At the same time, we support customized flanges with drawings. If necessary, we can provide you with them.
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