Anchor Flanges: Manufacturer and Supplier

Anchor flanges are a crucial element in preventing pipelines from changing their position.

On this page, we will delve into all the product’s aspects:

What is an anchor flange?
Anchor flanges’ characteristics
In which materials are anchor flanges made?
Products of all dimensions
Which industries use this type of fittings
Partner with MEGA for the supply of anchor flanges

What is an anchor flange?

An anchor flange is a specialized forged steel component welded directly onto high-pressure pipelines to prevent axial movement caused by thermal expansion, contraction, or hydraulic thrust. Similar in shape to a weld neck flange but without bolt holes, it is typically embedded in concrete so that the forces acting on the pipeline are transferred to the surrounding structure or ground. This solution helps maintain the stability and structural integrity of the pipeline, especially at critical points such as bends, pumping stations, or river crossings.

anchor flanges

Technical characteristics of MEGA pipe anchor flanges

Nominal diameters: from 1/2” up to 12”
Pressure rating: from Class 150# to 2500#
Facing types: RF (Raised Face) or RTJ (Ring Type Joint)
Available schedules: 10S, STD, XS, 160, and XXS
Design standard: manufactured according to Shell standard drawing S38.090-C
Header pipe compatibility: installable on header pipes from DN 3/4” up to 36”
Customization: special designs and custom-manufactured configurations available upon request

Request a technical consultation with MEGA’s engineering team today to discuss your project requirements and identify the most suitable anchor flange solution for your pipeline system.

Benefits of anchor flanges

M.E.G.A. anchor flanges are engineered to enhance the pipe fittings’ design that needs to be functional to multiple applications and resistant to many different stressors. In fact, these devices are characterized by:

reduced installation and manufacturing costs
longer life under cyclic fatigue loading
butt-weld installation in header pipe
shape in compliance with the shell standard drawing S38.090-C
flange dimension according to ASME B16.5

Moreover, our flanges are made to upstand:

Extreme resistance and durability to counteract high-pressure rates, temperatures, and fluid flow that can alter the positioning of the fitting itself from the inside. In this way, systems stand still even in the most challenging environments, reducing maintenance costs while maintaining high safety standards.
Integration with a wide range of pipe sizes and materials. As a matter of fact, they are ideal for any project requirement, guaranteeing excellent performance at all times. Thanks to their versatility, these fittings can be applied to many different fields, such as oil and gas, water treatment, and chemical processing.
Our anchor flange fittings have been manufactured to be easy to install and ensure the perfect integrity and stability of the entire system over time while exposed to significant environmental stressors.
Quality and structural resistance: at M.E.G.A., we take care of your project, considering every aspect of it from different perspectives in order to deliver the best possible anchor flange pipeline.

Materials

ASME B16.5 specifies materials for flanges and flanged fittings, primarily categorized into carbon steel, stainless steel, alloy steels, and nickel alloys, which are further divided into 44 distinct material groups for pressure-temperature rating. Common materials include ASTM A105 (carbon steel), A350 (low-temp steel), A182 (stainless steel), and specialized alloys like Inconel and Hastelloy, tailored for high-temperature/corrosion resistance.

Anchor flange dimensions

The dimensions of anchor flanges may vary significantly depending on the specific field of application and the specific characteristics of each system.

In high-pressure environments, such as those encountered in the oil and gas industry or in certain chemical processing applications, the necessity for larger and thicker anchor flanges is significant. These enhanced dimensions are a requirement, as they need to withstand the immense forces and pressures exerted on the pipeline system.

On the other hand, in lower-pressure applications, dimensions can be less relevant as the forces the system needs to endure are less pronounced.

Additionally, the material the pipeline is made of and its diameter can influence the dimensions of the anchor flange that needs to perfectly fit the entire system.

Which industries use this type of fittings

Anchor flanges are extensively applied in oil and gas, petrochemical, water treatment, power generation, and marine/offshore engineering industries to secure underground or above-ground pipelines.

Oil & Gas - Crucial for onshore and offshore pipelines, especially at facility entries, valve stations, and gas gathering manifolds (GGM) to withstand extreme pressure and temperature.
Petrochemical & chemical processing - Provides stability for pipelines carrying hazardous or high-temperature fluids.
Water & wastewater treatment - Used in municipal water systems and sewage treatment facilities for pipe support.
Power generation - Secures piping in power plants, particularly for steam, water, and cooling systems.
Marine & offshore engineering - Applied in shipbuilding and offshore piping systems to handle structural loads.
Construction & infrastructure - Used in large-scale piping projects for heating and urban utility supply.

Partner with MEGA for the supply of anchor flanges

Choosing MEGA as your partner for the supply of anchor flanges means relying on a manufacturer with decades of experience in the design and production of high-performance piping components for the most demanding industries. Since 1962, MEGA has been supplying engineered solutions for Oil & Gas, petrochemical, offshore, onshore, subsea, power generation, and nuclear projects worldwide, combining advanced engineering with a fully integrated manufacturing process.

From design and finite element analysis (FEA) to forging, machining, heat treatment, and non-destructive testing, every stage of production is managed in-house to ensure maximum quality, traceability, and compliance with international standards. MEGA’s facilities and certified processes enable the company to manufacture both standard and fully customized anchor flanges, tailored to the specific stress loads, materials, and operating conditions of each pipeline system.

With state-of-the-art equipment, strict quality control procedures, and the ability to produce components in a wide range of alloys and dimensions, MEGA delivers reliable solutions designed to ensure structural stability, long service life, and safe operation of critical pipeline infrastructure. Partner with MEGA to secure a trusted supplier capable of supporting complex projects with engineering expertise, manufacturing excellence, and global delivery capability.