Couplings
Straight joining of pipe sections. Confirm the exact material, dimensions, pressure class, schedule and documentation against your project requirement.

Specification framework
The values above are industry-standard reference points. Availability, exact dimensions, grade, standard edition, testing and documentation are confirmed per RFQ.
What is a Coupling?
A coupling joins two lengths of small-bore pipe. Full couplings connect pipe to pipe; half couplings are used for branch or instrument take-offs from a run.
Applications
- — Small-bore process piping
- — Instrument and utility connections
- — High-integrity branch and joining points
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
Couplings — common questions
What is a coupling used for?
A coupling joins two lengths of small-bore pipe. Full couplings connect pipe to pipe; half couplings are used for branch or instrument take-offs from a run.
Which standards apply to this product?
ASME B16.11 — forged fittings, socket-welding and threaded. 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 / F316 — stainless steel forgings; ASTM A182 F11 / F22 — alloy steel forgings. Availability of a specific grade is confirmed against your requirement.
What size range can be supplied?
Commonly NPS 1/16–4; pressure class 2,000, 3,000, 6,000 or 9,000 where applicable.
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.
More from Forged Fittings
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