Manufacturer & Exporters of:
Instrumentation Pipe Fittings & Valves

Dolphin Approved Flanges Manufacturer, Supplier & Exporter in UAE

Mcneil Alloys is a trusted manufacturer, supplier, and exporter of Dolphin Approved Flanges, engineered to meet the strict quality, safety, and performance standards required by Dolphin Energy projects. Our flanges are designed for high-pressure, high-temperature, and corrosive industrial environments, ensuring reliable and long-lasting performance for pipelines, refineries, and gas processing facilities.

We serve clients across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Africa, USA, and Europe, supplying fully certified Dolphin-compliant flanges that deliver durability, precision, and operational reliability for critical energy and industrial applications.

Our Dolphin Approved Flanges are manufactured using Carbon Steel, Alloy Steel, Stainless Steel, Duplex, Super Duplex, and Nickel Alloys, providing superior mechanical strength, corrosion resistance, and long-term service for demanding oil, gas, and industrial operations.

Qatar Gas Approved Pipes

Engineered to Meet Dolphin Energy Standards

Dolphin Energy projects require the highest quality components to ensure safe and efficient operations. Mcneil Alloys produces flanges that comply with these stringent standards, suitable for:

  • Offshore and onshore pipelines

  • Gas processing and transmission systems

  • Refinery and petrochemical plants

  • High-pressure oil and gas pipelines

  • Subsea production and flow systems

  • LNG terminals and storage facilities

Using Dolphin-approved flanges ensures operational safety, regulatory compliance, and minimal maintenance in critical energy and industrial systems.

Materials & Types of Dolphin Approved Flanges

Mcneil Alloys offers a wide range of materials and flange types certified for Dolphin 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)

  • Long Weld Neck (LWN)

  • Orifice, Spacer & Spectacle Blind Flanges

This wide selection allows engineers to choose the appropriate flange type, size, and material for Dolphin projects.

Certification & Documentation

Every Dolphin Approved Flange from Mcneil Alloys comes with full documentation to ensure compliance and traceability:

  • PMI (Positive Material Identification) Reports

  • NDT Reports – UT, RT, MPI, DPI

  • Hardness, Tensile & Impact Test Reports

  • Heat Treatment & Dimensional Inspection Certificates

  • Full Traceability to Raw Material Heat Numbers

These certifications simplify approvals for EPC contractors, project engineers, and industrial clients.

Global Supply & Technical Support

Mcneil Alloys supplies Dolphin Approved Flanges to global markets with secure, project-ready packaging. Our technical team assists clients with:

  • Selecting the right material and grade for specific fluids and pressures

  • Determining flange type and pressure class suitability

  • Ensuring compliance with Dolphin and international engineering standards

  • Supplying custom or project-specific flanges as required

Every flange is delivered inspection-ready, project-ready, and fully compliant.

Why Choose Mcneil Alloys for Dolphin Approved Flanges

Key Advantages:

  • Fully Dolphin-approved and certified flanges

  • High-performance materials for extreme and corrosive conditions

  • Wide range of sizes, pressure classes, and custom options

  • Complete certification package for traceability and approval

  • Fast delivery with global logistics support

  • Technical guidance from material selection to delivery

Reliable and Certified Dolphin Approved Flanges

Ensure your pipelines, refineries, and gas processing facilities operate safely and efficiently with Dolphin Approved Flanges from Mcneil Alloys. Our flanges are designed to withstand high pressure, extreme temperatures, and corrosive environments, providing long-lasting performance for critical industrial projects.

Contact Mcneil Alloys today to request a quote, check stock availability, or discuss your Dolphin project requirements.

Industries & Applications of Dolphin 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 – Dolphin Approved Flanges

What are Dolphin Approved Flanges? +
Dolphin Approved Flanges are flanges certified to meet Dolphin Energy’s strict standards for safety, quality, and performance, suitable for oil, gas, and industrial applications.
Which materials are used for Dolphin Approved Flanges? +
Mcneil Alloys manufactures Dolphin-approved flanges using Carbon Steel, Alloy Steel, Stainless Steel, Duplex, Super Duplex, and Nickel Alloys for high strength, corrosion resistance, and durability.
Where are Dolphin Approved Flanges used? +
These flanges are widely used in gas pipelines, oilfield systems, refineries, petrochemical plants, LNG terminals, and other high-pressure industrial environments.
Do Dolphin Approved Flanges come with certifications? +
Yes. Mcneil Alloys supplies flanges with EN 10204 3.1/3.2 MTCs, PMI reports, NDT records, mechanical test certificates, heat treatment reports, and full material traceability.
Can custom or project-specific Dolphin flanges be supplied? +
Absolutely. Mcneil Alloys provides custom-designed, project-specific, and special-grade flanges according to Dolphin drawings, EPC contractor requirements, or site-specific engineering specifications.
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