AWWA Class D-Ring and Blind Flanges

The blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. This blind flange is available in various sizes and materials and is used to provide positive closer on the ends of pipes, valves or equipment nozzles.


AWWA Class D-Ring and Blind Flanges

AWWA Class D-Ring and Blind Flanges
AWWA Class D-Ring and Blind Flanges
1. Ring flanges available overbored or counterbored per customer specification.
2. Bolt holes shall be drilled 1/8th inch larger in diameter than the nominal diameter of the bolt, except for flanges larger than 84 inch in diameter which shall be drilled 3/16th inch larger than the nominal diameter of the bolt.
3. Drilling same as ANSI/ASME B16.1 125 lb and B16.5 150 lb pattern.
4. Flanges available overdrilled to accommodate insulators.
5. AWWA recommends the use of dished head assemblies as alternate to blind flanges, sizes over 72" nominal.
6. AWWA C207-01 Class B and D Hub Flanges are identical to Industry Standard Class 125 Light Weight Flanges.

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Sunny Steel provide a wide range of steel products as Steel pipes, Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.
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Flanges General

Flanges General
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.

Pipe fitting

Pipe fitting
Pipe fitting is work that involves the installation or repair of pipes or tubes. Pipes and tubes are necessary for a wide range of reasons.