Malleable Coupling Fittings

🔹Malleable Coupling Fittings (Full / Half / Reducing)

Product Overview

Malleable Coupling fittings are essential connectors for joining two pipes in low and medium pressure piping systems. They are widely used for pipeline extensions, emergency repairs, and diameter transitions.

Manufactured from high-quality malleable iron in compliance with EN 10242, ISO 49, ASTM A197, BS 143 / 1256, and GOST standards, these couplings provide excellent mechanical strength, ductility, and long-term reliability.

Available in Full Coupling (internal threads on both ends), Half Coupling (threaded on one end), and Reducing Coupling (connect pipes of different diameters), these fittings offer versatile solutions for diverse industrial piping requirements.

Key Features & Advantages

Secure and Leak-Free Connection

Precision-machined internal threads ensure tight engagement with mating pipes, providing reliable, leak-free joints under operating pressure.

High Mechanical Strength

Forged malleable iron construction withstands internal pressure, vibration, and mechanical stress, ensuring long-term durability.

Flexible System Design

  • Full Coupling – standard pipe extension

  • Half Coupling – branch connections or partial pipeline modifications

  • Reducing Coupling – connecting pipes of different diameters, enabling smooth flow transition

Corrosion Resistance

Surface finishes include black, galvanized, or zinc-plated coatings to protect against corrosion in various environments.

Easy Installation & Maintenance

No welding required. Simple installation using standard tools makes couplings ideal for maintenance, retrofit, and modular systems.

Materials & Manufacturing

  • Malleable Iron (ASTM A197 / EN 10242)

  • Forged or cast with heat treatment for superior ductility

  • CNC thread machining for precision fit

  • Dimensional inspection and quality control

  • Certificates available (EN 10204 3.1) and third-party inspection upon request

Standards & Threads

Manufactured according to:

  • EN 10242 / ISO 49 – Malleable iron piping fittings

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

  • GOST 8944 / 6357 – Russian standards

Thread types:

  • NPT

  • BSP / BSPT

  • Metric (custom sizes available)

Applications

Malleable Coupling fittings are widely used in:

  • Water supply and plumbing systems

  • Gas and fuel distribution networks

  • Oil & gas auxiliary pipelines

  • Compressed air systems

  • Fire protection and sprinkler systems

  • HVAC and industrial piping

  • Chemical and petrochemical plants

They are particularly suitable for:

  • Pipe extension or repair

  • Low to medium pressure pipelines

  • Maintenance and retrofit projects

  • Diameter conversion in modular piping systems

Delivery & Customization

  • Standard sizes in stock for fast delivery

  • Custom thread types and dimensions available

  • OEM branding and private label options

  • Export-standard packaging for safe transportation

Technical support available for fitting selection and project guidance.

Why Choose Our Malleable Coupling Fittings

  • Compliance with international standards

  • Stable quality and reliable threaded connections

  • Competitive pricing for bulk orders

  • Fast delivery and export experience

  • Suitable for global B2B pipeline projects

Request a Quote

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

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