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ONGC Approved Flanges Manufacturer, Supplier & Exporter in UAE

Mcneil Alloys is a trusted manufacturer, supplier, and exporter of ONGC Approved Flanges, engineered specifically for the demanding needs of India’s largest oil & gas corporation—Oil and Natural Gas Corporation (ONGC). Serving major markets such as the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Africa, USA, and Canada, our ONGC-approved flange range ensures maximum safety, compliance, and durability for offshore drilling platforms, subsea systems, and high-pressure pipelines.

Our ONGC Approved Flanges are manufactured using premium carbon steel, alloy steel, stainless steel, duplex, super duplex, and nickel alloys, guaranteeing outstanding mechanical strength, corrosion resistance, and long-term operational performance. These flanges are widely used in exploration sites, petrochemical complexes, FPSO units, refineries, and critical oil transmission lines, ensuring secure and leak-proof connections under extreme conditions.

Designed for Stringent ONGC Standards

Mcneil Alloys manufactures flanges that comply with the strict engineering codes, safety benchmarks, and material specifications set by ONGC. Every flange is tested to perform reliably in harsh offshore and onshore environments. ONGC Approved Flanges are ideal for:

  • Offshore drilling rigs and subsea pipelines

  • Oil and gas production platforms

  • Refinery and petrochemical applications

  • High-pressure and corrosive service conditions

  • Fluid transmission systems requiring fully certified and traceable components

Using ONGC-approved components ensures operational safety, regulatory compliance, low maintenance cost, and extended service life even in the most demanding environments.

Materials and Flange Types

Mcneil Alloys offers an extensive range of material grades and flange types approved for ONGC projects.

Materials:

  • Carbon Steel: A105, A350 LF2

  • Alloy Steel: F5, F9, F11, F22, F91

  • Stainless Steel: 304, 316, 321, 347

  • Duplex & Super Duplex: 2205, 2507

  • Nickel Alloys: Inconel, Monel, Hastelloy

Flange Types:

  • Weld Neck (WN)

  • Slip On (SO)

  • Blind (BLRF)

  • Ring Type Joint (RTJ)

  • Socket Weld (SW)

  • Threaded (TH)

  • Orifice & Spectacle Blind Flanges

This complete product range allows engineers and procurement teams to select flanges of the right size, pressure class, and material grade for any ONGC application.

Certification and Documentation

Each ONGC Approved Flange is supplied with complete documentation and inspection records to ensure hassle-free approval, installation, and commissioning.

  • Mill Test Certificates (EN 10204 3.1 / 3.2)

  • PMI testing reports

  • NDT reports – UT, RT, MPI, DPI

  • Hardness, impact, tensile test reports

  • Heat treatment charts

  • Dimensional inspection reports

  • Full raw material traceability

These certifications ensure that every flange meets ONGC’s stringent quality and safety guidelines.

Global Supply & Technical Support

Mcneil Alloys supplies ONGC Approved Flanges across India, GCC, Southeast Asia, Africa, USA, and Europe. Our strong supply chain network, ready inventory, and flexible manufacturing capability ensure timely deliveries, even for urgent shutdown or maintenance requirements.

Our technical experts guide clients in choosing the correct pressure class, metallurgy, and flange design to improve operational efficiency and ensure compliance with ONGC’s standards.

Why Choose Mcneil Alloys for ONGC Approved Flanges

Partnering with Mcneil Alloys means choosing reliability, quality, and certification-backed confidence.

Key Advantages:

  • Fully ONGC-approved and compliant flanges

  • Manufactured from high-performance materials

  • Wide range of sizes, types, and pressure ratings

  • Complete documentation for audits and approvals

  • Ready stock for offshore/onshore project needs

  • Expert technical support from selection to delivery

Get ONGC Approved Flanges for Your Upcoming Projects

Equip your offshore platforms, refineries, or oil & gas pipelines with fully certified ONGC Approved Flanges from Mcneil Alloys. Our flanges ensure safe operation, long-term durability, and compliance with the most stringent energy sector standards.

Contact Mcneil Alloys today to request pricing, check stock availability, or discuss project specifications.
Choose us for durable, certified, and project-ready flange solutions.

Industries & Applications of ONGC Approved Flanges

Engineered for offshore, energy, and heavy industrial environments, our Lamprell Approved Flanges deliver high-performance, corrosion resistance, and long-term reliability across a wide range of critical applications.

Offshore Platforms

Oil & Gas Fabrication Yards

Pipeline Construction

Refinery Units

Petrochemical Complexes

Export & Gas Processing Facilities

FPSO Modules & Topsides

Drilling Rig Maintenance & Construction

Frequently Asked Questions – ONGC Approved Flanges

What are ONGC Approved Flanges? +
ONGC Approved Flanges are flanges that meet the strict engineering, safety, and performance standards set by Oil and Natural Gas Corporation (ONGC) for offshore, onshore, and refinery applications in the oil and gas industry.
Which materials are used for manufacturing ONGC Approved Flanges? +
Mcneil Alloys manufactures ONGC approved flanges using Carbon Steel (A105, LF2), Alloy Steel (F5, F11, F22, F91), Stainless Steel (304, 316, 321), Duplex, Super Duplex, and Nickel Alloys such as Inconel, Monel, and Hastelloy for superior strength and corrosion resistance.
Where are ONGC Approved Flanges commonly used? +
These flanges are extensively used in offshore drilling platforms, subsea pipelines, refinery units, FPSO modules, petrochemical plants, and high-pressure oil and gas transmission systems requiring certified components.
Do ONGC Approved Flanges come with certifications? +
Yes. Mcneil Alloys provides full documentation including EN 10204 3.1/3.2 MTCs, PMI testing, NDT reports (UT, RT, MPI, DPI), hardness tests, impact tests, and complete traceability according to ONGC standards.
Can you supply custom-size or project-specific ONGC flanges? +
Absolutely. We supply custom dimensions, special material grades, and project-specific flanges according to ONGC drawings, EPC contractor requirements, and offshore/onshore engineering specifications.
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