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Blind Flanges

Closes off piping ends and openings. Confirm the exact material, dimensions, pressure class, schedule and documentation against your project requirement.

Blind Flanges in the Flanges product range
Technical reference

Specification framework

CategoryFlanges
StandardsASME B16.5 — pipe flanges and flanged fittings, NPS 1/2–24; ASME B16.47 — large-diameter flanges, NPS 26–60
Materials / gradesASTM A105 — carbon steel forgings; ASTM A182 F304 / F304L / F316 / F316L — stainless steel; ASTM A350 LF2 — low-temperature carbon steel
Size guidanceIncluding sizes up to 8000 NB through our supplier network; exact standard, pressure class, facing and dimensions to be confirmed per enquiry.
ApplicationsFlanged process connections; Piping maintenance and shutdown work; Pressure equipment and utility systems

The values above are industry-standard reference points. Availability, exact dimensions, grade, standard edition, testing and documentation are confirmed per RFQ.

Product overview

What is a Blind Flange?

A blind flange closes off a flanged opening, nozzle or the end of a line. It is used for isolation, future connections and pressure-testing points.

Applications

  • — Flanged process connections
  • — Piping maintenance and shutdown work
  • — Pressure equipment and utility systems
Quality & documentation

How supply is handled

Omegha Steel is a Kolkata-based manufacturing firm. For each enquiry the requirement is reviewed against the stated standard, grade, size and application, and the documentation available for that supply — including mill test certification and any inspection requirement — is confirmed in writing before order. Nothing is claimed here that is not agreed for your specific order.

To quote accurately we need

  • — Size / NPS or NB, and schedule or thickness
  • — Material grade and applicable standard
  • — Pressure class or rating, where applicable
  • — Quantity and required delivery date
  • — Documentation and inspection requirement
Frequently asked questions

Blind Flanges — common questions

What is a blind flange used for?

A blind flange closes off a flanged opening, nozzle or the end of a line. It is used for isolation, future connections and pressure-testing points.

Which standards apply to this product?

ASME B16.5 — pipe flanges and flanged fittings, NPS 1/2–24; ASME B16.47 — large-diameter flanges, NPS 26–60. The applicable standard and its edition are confirmed for each enquiry.

Which materials and grades are available?

ASTM A105 — carbon steel forgings; ASTM A182 F304 / F304L / F316 / F316L — stainless steel; ASTM A350 LF2 — low-temperature carbon steel. Availability of a specific grade is confirmed against your requirement.

What size range can be supplied?

Including sizes up to 8000 NB through our supplier network; exact standard, pressure class, facing and dimensions to be confirmed per enquiry.

Can mill test certificates be provided?

The documentation available for a given supply — including mill test certification and any third-party inspection requirement — is confirmed in writing at quotation stage.

Do you supply outside Kolkata?

Enquiries from across West Bengal and India are welcome. Delivery timelines and freight are quoted against the destination and quantity.

How do I request a quotation?

Send the size, material, standard, quantity and delivery requirement through the RFQ form or on WhatsApp, and the enquiry will be reviewed and quoted.

Ready to specify Blind Flanges?

Send the size, quantity, material, standard, application and delivery requirement for a focused quotation.

Start RFQ