Home Products Suppliers directory Live Upvotes Sourcing Guides Insights & Blog
Supplier Portal Request Quote
Home Products Blind Flanges
Blind Flanges
Blind Flanges thumbnail
(5.0 / 5.0)

Blind Flanges

Last Updated: July 18, 2026

Starting From 48Rs/Pcs

A blind flange is a solid steel disc featuring standard outer bolt holes but no center bore or opening. It works by mounting directly to the terminal end of a flanged piping section or valve nozzle, secured via standard high-tensile bolts and an intermediate gasket. This configuration establishes a permanent or temporary liquid-tight structural barrier that completely halts the downstream migration of liquid or gas. Blind flanges are critical safety and maintenance components, allowing field operators to isolate specific pipe segments for inspections, hydro-testing, or system expansions without risking downstream product release.

Technical Specifications of Blind Flanges In India

Size Range 1/2" to 48" (Available in Raised Face [RF], Flat Face [FF], and Ring Type Joint [RTJ] sealing face profiles)
Material Grades Stainless Steel: ASTM A182 F304, F304L, F316, F316L, F321, F347
Carbon Steel ASTM A105, A350 LF2, A694 F42 to F70
Alloy Steel ASTM A182 F5, F9, F11, F22, F91
High Nickel Alloy Monel 400/K500, Inconel 600/625/718, Incoloy 800/800H/825, Hastelloy C22/C276, Nickel 200/201, Cupronickel (90/10 & 70/30)
Thickness / Pressure Class Pressure Ratings: Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500
Dimensional Standard Conforms strictly to ASME B16.5, ASME B16.47 Series A & B
Surface Finish CNC Serrated Finish (Spiral or Concentric Stock Finish), Smooth Finish, Black Anti-Rust Paint, Yellow Varnish, Hot-Dip Galvanized, Pickled & Passivated
Origin Indian / Imported

Sourcing Terms & Timeline

Payment Terms

Letter of Credit / Bank Transfer / Advance

Delivery Package

Mill Test Certificate (MTC) + Inspection Reports

Standard Delivery

2-5 Working Days in Maharashtra region

Custom Cuts Support

Custom length cutting & shearing facilities available

Verified Suppliers

No verified suppliers linked to this product yet.

Benefits and Application of Blind Flanges

Benefits

  • Total Flow Isolation and Safety: Provides a definitive, mechanical shut-off that successfully contains extreme hydraulic pressures, preventing hazardous media leaks or fugitive gas emissions.

  • Exceptional Pressure and Stress Absorption: The solid, thick-center architecture absorbs heavy pipeline bending stresses and continuous hydraulic pressure spikes better than almost any other flange configuration.

  • Easy Maintenance Accessibility: Allows rapid mechanical removal of bolts to open the pipe end, giving service crews easy access to the pipeline interior for cleaning, inspection, or system expansion.

    Applications

    Blind flanges are widely utilized across industrial piping infrastructure to block off active pipeline networks during localized maintenance or system modifications. In cross-country oil and gas manifold grids, high-yield Carbon Steel blind flanges are bolted onto terminal ends to provide secure high-pressure sealing that safely contains volatile hydrocarbons. Chemical processing operations rely extensively on Stainless Steel and High Nickel Alloy blind flanges to cap unused reactor ports and acid line headers, delivering vital protection against extreme localized pitting and chemical decay. Within modern thermal power generation facilities, heavy-duty Alloy Steel blind flanges are integrated into high-pressure steam bypass headers to seal lines reliably under deep thermal fatigue loops. Additionally, marine engineering platforms employ erosion-proof Cupronickel and Stainless Steel blind flanges on seawater cooling loops and bilge mains to withstand continuous wave vibration and rapid chloride-accelerated corrosion.

Get Quote

Receive dynamic pricing quotes for Blind Flanges from our verified suppliers.

Procurement Network

Supplying to top industrial contractors

VIVEK INDUSTRIES APEX INFRASTRUCTURE MUMBAI METRO METALLICS GODREJ METALS TATA INFRA
Customer Feedback

Buyer reviews

"Excellent B2B platform. Sourcing high pressure pipe fittings from verified suppliers in Girgaon has saved us massive research hours."

Rajesh K. Shah

SHAH STRUCTURALS LTD.

Product Catalog

Other Steel Materials

Value Addons

You might also like.

Service

Custom Cutting & Shearing

Structural columns and bars cut to precise dimension sizes at mill site.

Service

Ultrasonic Testing Reports

Nondestructive raw material testing certified by third party auditors.

Service

Hot Dip Galvanizing

Premium corrosion protective zinc coating applied to structural steels.

Service

Logistics & Site Unloading

Flat-bed truck logistics matching tight construction schedules in Mumbai.

Request Price Quote.

Send an enquiry for Blind Flanges to verified suppliers.

Product Large View