No products found
Use fewer filters or remove all

Malleable Union Fittings

🔹Malleable Union Fittings

Product Overview

Malleable Union fittings are threaded connectors designed to join two pipes or components while allowing easy disassembly without cutting or welding. Ideal for pipelines that require frequent maintenance, inspection, or replacement, these unions combine mechanical strength with installation convenience.

Manufactured from high-quality malleable iron and produced in compliance with EN 10242, ISO 49, ASTM A197, BS 143 / 1256, and GOST standards, our unions ensure secure, leak-free connections suitable for a wide range of industrial applications.

Product Types

  • Standard Union – connects equal-diameter pipes

  • Reducing Union – connects pipes of different diameters

  • Optional configurations: Hex or Square body for easy wrench installation

Thread options: NPT, BSP, BSPT, Metric (custom sizes available)

Key Features & Advantages

Easy Disassembly & Maintenance

The union design allows quick removal and reinstallation of piping sections without cutting or welding, reducing downtime.

Reliable Leak-Free Connection

Precision-machined threads provide tight engagement, ensuring a secure and leak-free joint under working pressure.

High Mechanical Strength

Forged malleable iron construction offers excellent resistance to internal pressure, vibration, and mechanical stress.

Versatile Design

Supports modular pipeline layouts and accommodates maintenance or retrofitting needs in industrial systems.

Corrosion Resistance

Available with black, galvanized, or zinc-plated finishes to suit indoor and outdoor environments.

Materials & Manufacturing

  • Malleable Iron (ASTM A197 / EN 10242)

  • Forged or cast with heat treatment for superior ductility

  • CNC machining of threads for precise fit

  • Dimensional and visual inspection to ensure seal integrity

Certificates available on request (EN 10204 3.1, third-party inspection SGS/BV/TUV)

Standards & Threads

Manufactured according to:

  • EN 10242 / ISO 49 – Malleable iron threaded fittings

  • ASTM A197 / BS 143 / 1256 – Material and mechanical specifications

  • GOST 8947 / 6357 – Russian standards

Thread types: NPT, BSP / BSPT, Metric (custom)

Applications

Malleable Union fittings are widely used in:

  • Water supply and plumbing systems

  • Gas and fuel distribution pipelines

  • Fire protection and sprinkler systems

  • Compressed air systems

  • HVAC and industrial piping

  • Chemical and petrochemical plants

They are particularly suitable for:

  • Pipelines requiring periodic inspection or maintenance

  • Modular and expandable piping systems

  • Retrofit and repair projects

  • Systems where quick disassembly is essential

Delivery & Customization

  • Standard sizes in stock for fast shipping

  • Custom thread types and dimensions available

  • OEM branding and private label options

  • Export-standard packaging for safe transportation

Technical support is available for fitting selection and project guidance.

Why Choose Our Malleable Union Fittings

  • International standard compliance

  • Reliable leak-free performance

  • High mechanical strength and durability

  • Flexible installation and maintenance

  • Competitive pricing and global shipping experience

Request a Quote

For high-quality Malleable Union fittings, please provide your required size, material, pressure rating, and thread type.
Our engineering team will provide professional technical advice and fast quotation support.