Blind Flange Flange cover / Blanking flange

Name: Blind Flange
Brand: GUANGZHU FLANGE
SKU: BL

The blind flange is a solid flange cover without a central bore

Product description

The blind flange is a solid flange cover without a central bore. It closes pipe ends, valve connections and reserved openings, and is also used for sectional pressure testing and isolation during maintenance. Thickened blinds carry the same pressure rating as weld neck flanges, making them a key safety component for piping isolation.

Key features

Made from solid forgings or heavy plate, with the same rating as weld neck flanges
Suitable for pressure testing, purging and maintenance isolation
Central bore, threaded hole or instrument tapping available on request
Optional handle for quick on-site removal

BL Class 150 – 2500

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Technical specification

Specification and supply scope

Blind Flange
Standards	BL · Produced to ASME / EN / DIN / JIS / BS / GOST standards
Size range	1/2" - 24" (DN15 - DN600); up to 60" (DN1500) for large sizes
Pressure rating	Class 150 – 2500; PN6 – PN100
Available materials	A105, A350 LF2, Q235, 20#, 304/316L, F11, F22
Face type	RF raised face / FF flat face / RTJ ring joint
Surface treatment	Rust-preventive oil / black paint / hot-dip galvanizing / epoxy coating (optional)
Packing	Fumigated wooden cases or pallets, steel-strapped, with material certificate and packing list inside

Typical applications

Where this product is typically used

Pipe end closureValve & equipment openingsSectional hydro-testing & purgingMaintenance isolationTank & vessel manhole covers

Applications are indicative only. Final selection depends on design pressure, temperature, media and site conditions - our technical team is glad to advise.