BS blind flanges are used to close the ends of pipes, valves, and pressure vessel connections in industrial piping systems. Manufactured to the specified British Standard, they provide a secure sealing interface for pipeline isolation, maintenance, and future system expansion. They are suitable for applications in the oil and gas, petrochemical, power generation, and water treatment industries.
BS blind flanges are available in carbon steel, stainless steel, and alloy steel, with sizes, pressure ratings, and facing types selected according to project requirements. Jinhang Pipeline supplies blind flanges based on applicable standards and customer specifications, with customized dimensions and material options available upon request.
| Item | Specification |
|---|---|
|
Product Name |
BS Blind Flange |
|
Standard |
BS 10 / BS 4504 |
|
Nominal Size |
1/2"-24"/DN10-DN4000 |
|
Pressure Rating |
TableD-E-F-H/PN2.5-PN40 |
|
Material |
Carbon steel Rst37.2 ; s235JR;s275JR: P245GH; P250GH;A105 Stainless steel ASTM A182 F304/304L; F316/316L; F321; F51; Alloy steel ASTM A182 F11/F12/F22;16Mo3；13CrMo4-5；11CrMo9-10 |
|
Flange Facing |
Flat Face (FF) / Raised Face (RF), as specified |
|
Surface Treatment |
Black Painting / Anti-Rust Oil / Customization |
|
Customization |
Available |
|
Material Category |
Material Grades |
|---|---|
|
Carbon Steel |
Rst37.2 ; s235JR;s275JR: P245GH; P250GH;A105; |
|
Stainless Steel |
ASTM A182 F304/304L; F316/316L; F321; F51; |
|
Alloy Steel |
ASTM A182 F11/F12/F22;16Mo3；13CrMo4-5；11CrMo9-10; |
Jinhang Pipeline manufactures BS blind flanges in accordance with applicable British Standards, such as BS 10, BS 4504, or BS EN 1092-1, as specified by the customer. These standards define flange dimensions, pressure ratings, and connection requirements to ensure compatibility with the intended piping system.
Quality control covers material selection, dimensional accuracy, bolt hole positioning, flange facing, and surface finish. These checks help ensure dimensional consistency, reliable sealing, and suitability for industrial piping applications. Material grades and technical specifications are confirmed according to project requirements.
Oil and Gas Industry: Sealing pipeline ends and isolating sections for maintenance.
Petrochemical Plants: Closing unused pipe connections in process piping systems.
Power Generation: Sealing piping connections in power plant systems.
Water Treatment: Closing pipe ends in water supply and treatment facilities.
Industrial Piping Systems: Blocking pipeline openings during testing, maintenance, or system expansion.
Chemical Processing: Isolating piping connections in industrial chemical plants.
What is a BS Blind Flange?
A BS blind flange is a solid flange used to close the end of a pipe, valve, or pressure vessel connection. It provides a secure closure for pipeline isolation, pressure testing, maintenance, and future system expansion.
Which standards are used for BS Blind Flanges?
BS blind flanges can be manufactured according to BS 10, BS 4504, and other applicable standards, such as BS EN 1092-1, when specified. The applicable standard determines flange dimensions, pressure ratings, and connection requirements.
What materials are available for BS Blind Flanges?
BS blind flanges are available in carbon steel, stainless steel, and alloy steel. Common material grades include ASTM A105, P245GH, P250GH, ASTM A182 F304/304L, F316/316L, F321, F51, F11, F12, and F22.
What facing types are available for BS Blind Flanges?
Common facing options include Flat Face (FF) and Raised Face (RF). The facing type should be selected according to the mating flange, gasket requirements, and piping system specifications.
Can BS Blind Flanges be customized?
Yes. Jinhang Pipeline supplies customized BS blind flanges according to customer drawings and technical requirements. Customization options include dimensions, material grades, pressure ratings, facing types, and surface treatments.
Which industries use BS Blind Flanges?
BS blind flanges are widely used in oil and gas, petrochemical, power generation, water treatment, chemical processing, and general industrial piping systems. They are commonly installed where pipeline connections need to be securely closed or isolated.
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