Blind Flange

High-Pressure Sealing for Pipe Systems

A Blind Flange is a solid disk used to block off a pipeline or create a stop. It is commonly used for pressure testing, inspection, or sealing the end of a piping system. Designed for strength and durability, blind flanges are ideal for both high-pressure and high-temperature applications across various industries.

  • Material Options:

    • Carbon Steel (ASTM A105)

    • Stainless Steel (304, 316)

    • Alloy Steel, Duplex, Super Duplex

    • Custom materials available on request

  • Sizes:

    • Range from ½” to 48” or larger

    • Customized dimensions available

  • Pressure Ratings:

    • ANSI / ASME: 150#, 300#, 600#, 900#, 1500#, 2500#

    • DIN / JIS / BS standards also available

  • Surface Finish:

    • Rust-preventive coating

    • Serrated, smooth, or custom finish for better sealing

  • Gasket Compatibility:

    • Suitable for use with spiral wound, ring joint, or rubber gaskets

  • Oil & Gas Pipelines

  • Petrochemical Plants

  • Water & Wastewater Systems

  • Power Generation

  • HVAC Systems

  • Pressure Vessel Closures

Specification

Detail

Size Range

½” to 48”

Material

CS, SS, AS, Duplex

Class/Rating

ANSI 150# – 2500#

Standard

ANSI / ASME B16.5 / DIN / JIS

Surface Finish

Serrated / Smooth / Custom

Coating

Rust-proof black/galvanized

Q: What is the primary use of a blind flange?
A: To seal the end of a piping system or vessel opening for future access, pressure testing, or maintenance.

Q: Can you provide MTC and third-party inspection certificates?
A: Yes, Mill Test Certificates and third-party inspections (TUV, SGS, BV, etc.) are available upon request.

Q: Are these flanges suitable for high-temperature environments?
A: Yes, depending on the material selected, they can handle both high-pressure and high-temperature conditions.