Blind Flange

A blind flange is a solid steel piece with no bore (interior diameter) and primarily designed to cap off a line.
A blind flange may be used for isolating a pipe, valve, or pressure vessel. This type of flange is available in all sizes and classes, and may use a flat, raised, or ring-type joint face.

The ASME B16.5 standard details the dimensions and tolerance requirements for blind flanges.

Blind flanges have to withstand remarkable mechanical stress due to the system pressure and the required bolting forces.
Blind flanges allow easy access to the pipeline, as they can be easily unbolted to let the operator execute activities inside the terminal end of the pipe (this is also the reason why the blind flange type is used as a manhole for pressure vessels, at times).

It is maybe interesting to observe that, while this flanges type is easier to manufacture, they are sold at a premium average cost per kilogram compared to the other flange types.
There are also other flange types that we can supply, such as plate flange, spectacle flange, orifice flange, and so on.

The production process of blind flanges:

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As a trusted steel pipe fittings and flanges manufacturer, RAYOUNG offers a comprehensive range of products engineered to meet international standards, including:

Standards Complied With:
ASME、ANSI，gost, EN, BS, SANS, DIN, JIS.
Material :
Carbon Steel (ASTM A105, A350 LF2)
Stainless Steel (ASTM A182 F304/F316)
Alloy Steel (ASTM A694 F42-F70)
Duplex & Super Duplex (ASTM A182 F51/F53/F55)
Nickel Alloys (Inconel, Monel, Hastelloy)
Coated flange:
General coated flange: Black Painting, Anti-rust Oil, red Painting, Gold Painting
Specially coated flange:Epoxy coated flange, Galvanized flange, PP coated flange

Production of every flanges follows precise manufacturing processes to achieve leak-proof connections while strengthening durability and performance stability with high-pressure systems.