Blind Flanges Supplier & Stockist in India

Solid flanges that close the end of a pipe, a spare nozzle or an open flange and can be unbolted later. Supplied in MS, carbon steel A105 and stainless steel, to ASME B16.5, Table E or IS 6392.

BLRF / BLFF / RTJBlank, dummy or end flangeMS, CS A105, SS 304 / 316ASME B16.5 / Table E / IS 6392½" to 24"Tapped blinds on request

WhatsApp enquiry

Blind flange drawing: solid disc with bolt holes and raised face, no bore — A blind flange has the same OD and drilling as the flange it closes, but no bore.

What a blind flange does

A blind flange is a solid disc drilled with the same bolt pattern as the flange it closes. Bolted to the end of a line or nozzle, it seals the opening completely, yet can be removed later to extend the line, clean it or inspect it. In Indian trade it is also called a blank flange, dummy flange or end flange.

Because a blind flange takes the full pressure across its face plus the bolt load, it is one of the most highly stressed flange types in larger sizes. For pressure service, use the thickness given by the standard for your class, not a piece of plate of arbitrary thickness.

What a blind flange does: specification summary
Materials	MS IS 2062; carbon steel ASTM A105; stainless ASTM A182 F304 / F304L / F316 / F316L
Standards	ASME B16.5 Class 150 to 1500; BS 10 Table D / E / F / H; IS 6392; EN 1092-1 Type 05
Sizes	½" (15 NB) to 24" (600 NB); larger to drawing
Facing	Raised face (BLRF), flat face (BLFF), ring type joint on request
Options	Tapped (drilled and threaded) blind for a vent, drain or gauge, on request
Finish	Black, primer painted, galvanized (MS / CS) or pickled (SS)

Blind flange, end cap or spectacle blind?

Item	How it closes the line	When to use it
Blind flange	Bolted to a mating flange; removable	Line ends and nozzles you may open again
End cap	Butt-welded to the pipe; permanent	Ends that will never be opened
Spectacle blind or spacer (ASME B16.48)	Clamped between two flanges	Positive isolation of a line for maintenance; ask us if you need one

Where blind flanges are used

Closing headers and manifolds left open for future branches
Spare nozzles on tanks, vessels and heat exchangers
Cleaning, pigging and inspection access points
Temporary end closures during hydrostatic testing
Fire water and utility mains with planned extensions

Ordering a blind flange that fits

A blind flange must match the mating flange exactly: same standard, size, class or table, bolt circle and number of holes. Match the facing as well: a raised-face blind on a raised-face flange, and a flat-face blind against flat-faced cast iron or FRP equipment. If you need a vent or gauge connection, ask for a tapped blind and give the thread size and type.

MS blind flange price

Blind flanges use more steel than slip-on flanges of the same size, so they cost more per piece. Our flanges and fittings page lists indicative per-piece rates for Table E and Class 150 MS blind flanges. For forged A105 or stainless blinds, send size, class and quantity for a quotation.

Pipes and fittings to go with blind flanges

Pipe or fitting	Use it with these flanges when…
Slip-on flanges	you need the mating flange on the pipe end
Weld neck flanges	the line is high pressure or cyclic
ERW pipes	you are building water or utility headers
Carbon steel pipes	the header is A106 or A53 pipe
Tees, reducers and end caps	you need branch and closure fittings

Closing off several nozzles?Send sizes, class or table and facing. We will quote the blinds and their mating flanges together.

Request a quote WhatsApp

Flange types we supply

Each page covers materials, standards, sizes and where that flange fits. All flanges can be quoted with matching pipes and fittings.

MS FlangesIS 2062 mild steel, Table E / IS 6392 / ASA 150

Stainless Steel FlangesSS 304, 304L, 316, 316L to ASME B16.5

Carbon Steel FlangesForged ASTM A105, A350 LF2, Class 150 to 1500

Slip-On Flanges (SORF)Pipe slides in, two fillet welds

Weld Neck Flanges (WNRF)Butt-welded, bored to pipe schedule

Blind FlangesClose pipe ends, nozzles and test points

Socket Weld FlangesSmall-bore, high-pressure lines

Threaded FlangesNPT / BSP, no welding, GI lines

Lap Joint FlangesLoose flange with stub end

Plate FlangesFlat flanges, Table D/E/F/H, custom

Flange Size & Class ChartASME B16.5 OD, PCD, bolts and ratings

FAQ

Frequently Asked Questions

A blind flange closes the end of a pipe, nozzle or open flange. It can be unbolted later to extend the line, clean it or inspect it, and it is also used as a temporary end closure for pressure testing.

Yes. Blank flange, dummy flange and end flange are common names in Indian trade for a blind flange: a solid flange without a bore.

Yes, blind flanges are widely used as temporary end closures for hydrostatic tests. The flange and bolting must be rated for the test pressure.

A tapped blind flange has a threaded hole through its centre so a vent, drain or pressure gauge can be fitted. We supply them on request; give the thread size and type.

Match the flange it bolts to. Use raised face against raised-face steel flanges, and flat face against flat-faced cast iron or FRP equipment.

Blind flanges from ½" to 24" in MS, A105 and stainless steel. Larger blind flanges can be made to drawing.

Buyer Guides & Tools

Flange Size Chart & Pressure ClassesASME B16.5 OD, PCD, bolts, Class 150 to 2500 ERW vs Seamless PipeWhich pipe to use with your flanges Pipe & Tube Weight CalculatorMS / SS / GI round, square & rectangular Steel Pipe Buying Guide for IndiaChecklist before you request a quote SS 304 vs SS 316Choosing the stainless grade

Free Quotation

Get a Flange Quote

Tell us the flange type, size, class or table, material and quantity. We reply on call, WhatsApp or email.

MS, carbon steel and stainless steel flanges on one quotation
Matching pipes, elbows, tees and reducers from the same order
Dispatch from Thane / Panvel to sites across India

WhatsApp Us Call +91 98678 43347