Pipeline Anchor Flanges
Anchor flanges are used to restrain pipeline movement caused by thermal expansion changes or external forces. The most common method of securing an anchor flange is to embed it into a concrete thrust block, thereby spreading the pipeline forces throughout a large foundation. However, anchor flanges can be secured in other ways as necessary to overcome the axial force in the pipeline.
WeldFit designs anchor flanges to satisfy ASME codes, customer requirements and best practice engineering. The most common anchor flange material is A105 carbon steel, but they can also be supplied using stainless or high-yield stress materials. Anchor flanges are an integral pressure retaining component of the pipeline and are therefore supplied with end weld bevels to match the pipeline wall thickness.
Anchor Flange Features:
- Prevents movement of the pipe due to thermal changes and external forces
- Normally embedded in a concrete thrust block to spread to load over a large surface
- Designed for the unique operating conditions of the pipeline
- Standard flange material is A105 Carbon Steel
- Stainless or high-yield stress flanges can be designed and manufactured
- Manufactured in compliance with WeldFit’s ISO 9001:2008 certified quality program
- Nominal pipeline size
- Pipeline wall thickness
- Material grade
- Design code and design factor (if applicable)
- Design pressure
- Corrosion allowance
- Maximum axial load or design temperature differential – temperature differentials of 40°F (22°C) or 90°F (50°C) are standard
- Allowable bearing stress of the supporting foundation. If not supplied, WeldFit designers will assume a maximum bearing stress of 1500 psi.
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