Blind Flanges

When it comes to sealing off pipelines safely and securely, blind flanges are a top choice across industries. These flanges are specifically designed to block the end of a piping system or valve, making them perfect for pressure testing and isolation. Whether it’s for maintenance, shutdown, or future pipeline extension, blind flanges play a critical role in industrial fluid management. Shree Shankar Engineering Works is a Blind Flange Manufacturer in Kolkata.

Blind Flange Manufacturer in Kolkata

Shree Shankar Engineering Works is a leading Blind Flange Manufacturer in Kolkata, known for delivering top-quality flanges that meet stringent industrial standards. As the Best Manufacturer of Blind Flange in Kolkata, the company is committed to excellence in design, durability, and precision engineering. With a well-equipped manufacturing facility and a skilled team, they produce blind flanges that offer superior sealing and pressure handling. Trusted by industries across sectors, Shree Shankar Engineering Works also serves as a reliable Supplier of Blind Flange in Kolkata, offering both standard and custom solutions to meet diverse project needs efficiently and affordably.  

What is a Blind Flange?

A blind flange is a solid disk with bolt holes that resembles a regular flange but lacks a center opening. It’s used to close off pipelines, valves, and nozzles, preventing flow while withstanding extreme pressures and temperatures.

Role of Blind Flanges in Piping Systems

Blind flanges are essential for pressure vessel openings and pipeline terminations. They ensure safety during repairs and are often used in systems that require future expansion.

Key Features of Blind Flanges

High Pressure Tolerance

Blind flanges are built to withstand high-pressure environments, making them ideal for critical applications.

Leak-Proof Sealing

With precise machining and strong gaskets, they offer excellent sealing to prevent leaks and system failures.

Durability and Strength

Manufactured using high-quality materials, blind flanges provide long-term performance even under harsh conditions.

Advantages of Using Blind Flanges

Easy Maintenance Access

Blind flanges allow quick disconnection and re-connection for cleaning or maintenance without disrupting the entire system.

System Isolation for Safety

Need to isolate a section of your pipeline for safety reasons? Blind flanges do the job effectively without compromising structural integrity.

Cost-Effective for Future Expansions

They make it easy to extend pipelines or add equipment in the future—just unbolt and go.

Materials Used in Manufacturing Blind Flanges

Stainless Steel Blind Flanges

These are corrosion-resistant and suitable for aggressive environments like chemical processing plants.

Carbon Steel Blind Flanges

Known for strength and affordability, carbon steel flanges are widely used in oil, gas, and water projects.

Alloy and Duplex Steel Flanges

These are chosen for high-performance requirements, combining strength, toughness, and corrosion resistance.

Applications of Blind Flanges Across Industries

Petrochemical and Chemical Plants

Blind flanges are used to seal off chemical pipelines for testing or isolation purposes.

Oil and Gas Refineries

From offshore rigs to storage tanks, blind flanges play a vital role in flow control and safety.

Power Generation and Water Treatment

These flanges are integral to water lines, boilers, and high-pressure pipelines in power stations.

Why Choose Shree Shankar Engineering Works in Kolkata?

Trusted Flange Manufacturer Since Decades

With years of experience and a proven track record, Shree Shankar Engineering Works is a name you can trust for all your flange requirements.

Precision Engineering and Latest Technology

Using CNC machines, forging units, and in-house testing, they produce blind flanges that meet the highest standards of quality and durability.

Serving Pan India and Global Markets

From Kolkata to the world, their products are shipped nationwide and internationally, with clients in oil, gas, chemical, and construction industries.

The Manufacturing Process at Shree Shankar Engineering Works

Quality Raw Materials

Only premium-grade steel and alloys are used, ensuring each flange meets global expectations.

CNC Machining and Forging Techniques

Modern techniques guarantee precise tolerances, perfect roundness, and strength.

Rigorous Testing and Certification

Every flange undergoes ultrasonic testing, hydro testing, and dimensional checks to ensure zero-defect deliveries.

Custom Blind Flanges for Specific Needs

Standard and Non-Standard Sizes

Whether you need ASME, ANSI, DIN, or custom flange sizes, they’ve got you covered.

Customized Finishes and Coatings

Choose from galvanized, painted, epoxy-coated, or sandblasted finishes for your project needs.

OEM/ODM Services

Need flanges with your logo or special design? Shree Shankar Engineering Works offers full OEM/ODM support.

Certifications and Compliance

ISO 9001:2015 and More

They are ISO-certified and comply with major industrial regulations and third-party inspections.

Third-Party Inspection Ready

Their flanges are approved by third-party agencies like TUV, DNV, SGS upon request.

International and Indian Standards

Flanges conform to ANSI, BS, DIN, IS, and other recognized standards.

Delivery and Packaging

Protective Packaging for Safe Shipping

Blind flanges are securely packed in wooden crates or pallets, wrapped with anti-rust paper or bubble wrap.

Fast Turnaround Time and Logistics

Efficient manufacturing and supply chain operations ensure timely delivery—every time.

Client Testimonials and Case Studies

Satisfied Clients Across Industries

“We’ve used blind flanges from Shree Shankar Engineering Works for over a decade. Their quality is unmatched.” — Oil & Gas Contractor, Gujarat

Repeat Business from Big Brands

Their client list includes top names in engineering, construction, oil & gas, and infrastructure.

Competitive Pricing and Bulk Orders

Transparent Quotes

They provide detailed quotations with no hidden costs—what you see is what you get.

Attractive Discounts for Large Projects

Bulk orders? Enjoy competitive rates and flexible payment terms for volume-based deals.

Tips for Installing and Maintaining Blind Flanges

• Ensure clean and flat mating surfaces before installation

• Use high-quality gaskets and torque bolts evenly

• Regularly inspect for corrosion, cracks, or gasket wear

• Apply protective coatings for outdoor or corrosive applications

FAQs on Blind Flanges

Q1. What are blind flanges used for?
They are used to seal off the end of a pipe or valve in piping systems.

Q2. Can I get custom-sized blind flanges?
Yes, Shree Shankar Engineering Works offers both standard and custom sizes.

Q3. Are these flanges suitable for high-pressure applications?
Absolutely. Blind flanges are ideal for high-pressure and high-temperature environments.

Q4. How can I ensure the flange doesn’t leak?
Proper installation using quality gaskets and even bolt torque is key to leak-proof performance.

Q5. Do they deliver across India?
Yes, they offer pan-India delivery and also ship internationally.