In threaded piping systems, choosing the correct fitting is critical for ensuring safety, durability, and long-term performance. Among the most widely used threaded fittings in industrial and building pipelines is the FIG 220 Socket Part Threaded. Known for its reliability, standardized dimensions, and compatibility with global piping systems, this fitting plays a key role in water, gas, oil, and industrial applications.

This article explains what a FIG 220 socket part threaded fitting is, the standards it follows, its dimensions and technical specifications, and how engineers and buyers can select the right product for their projects.

What Is a FIG 220 Socket Part Threaded?

A FIG 220 Socket Part Threaded is a type of threaded socket (or threaded coupling) designed to connect two pipes of the same nominal diameter using internal threads. It is commonly manufactured from malleable iron, which provides excellent strength, ductility, and resistance to cracking under pressure.

Unlike welded fittings, threaded sockets allow for easy installation, disassembly, and maintenance, making them especially suitable for low- to medium-pressure systems where flexibility and serviceability are required.

FIG 220 fittings are widely used in:

• Water supply systems

• Gas pipelines

• HVAC installations

• Fire protection systems

• Industrial fluid and oil transfer lines

Because of their standardized design, FIG 220 threaded sockets are interchangeable across many international piping systems.

Applicable Standards for FIG 220 Threaded Sockets

One of the main reasons FIG 220 socket part threaded fittings are trusted worldwide is their compliance with recognized international standards. These standards ensure consistent dimensions, thread accuracy, and mechanical performance.

Commonly applied standards include:

• EN 10242 – European standard for malleable cast iron pipe fittings

• ASME B16.3 – American standard for malleable iron threaded fittings

• ISO 49 – International standard covering dimensions and pressure ratings

These standards define critical parameters such as thread tolerances, pressure ratings, and material properties. Manufacturers like KOXY strictly follow these specifications to ensure that every FIG 220 socket offers reliable sealing performance and full compatibility with BSP and NPT piping systems.

Thread Types: BSP and NPT

FIG 220 socket part threaded fittings are typically available with:

• BSP (British Standard Pipe) threads

• NPT (National Pipe Thread) threads

BSP threads are widely used in Europe, the Middle East, Asia, and Africa, while NPT threads are dominant in North America. Selecting the correct thread type is essential to prevent leakage and installation issues.

Professional suppliers such as KOXY clearly mark thread standards and offer technical guidance to help buyers avoid mismatches during procurement.

Dimensions and Size Range

FIG 220 threaded sockets are produced in a wide range of sizes to suit different pipeline requirements. Typical size ranges include:

• Nominal sizes: 1/8″ to 6″

• Metric equivalent: DN6 to DN150

Dimensions such as overall length, wall thickness, and thread depth are strictly controlled by the applicable standards. This ensures proper load distribution and mechanical strength when installed under pressure.

For construction companies and system integrators, standardized dimensions mean that FIG 220 sockets can be easily replaced or integrated into existing systems without redesigning the pipeline layout.

Technical Specifications Overview

Below are the typical technical characteristics of a FIG 220 socket part threaded fitting:

• Material: Malleable iron

• Manufacturing process: Casting with precision machining

• Thread types: BSPT / NPT

• Surface finish:

• Black (oil-coated)

• Hot-dip galvanized for corrosion resistance

• Pressure rating: Commonly PN16 to PN25 or Class 150

• Working temperature: Up to approximately 200°C (depending on application and sealing material)

These specifications make FIG 220 sockets suitable for both indoor and outdoor installations, especially where corrosion resistance and mechanical durability are required.

Why Malleable Iron Is Used

Malleable iron is the preferred material for FIG 220 threaded sockets due to its excellent balance of strength and flexibility. Compared with gray iron, malleable iron offers:

• Higher tensile strength

• Better impact resistance

• Reduced risk of brittle fracture

This is particularly important in threaded connections, where stress is concentrated around the threads. KOXY uses carefully controlled material grades and heat treatment processes to ensure consistent performance across all production batches.

Applications in Real-World Projects

Because of their standardized design and proven reliability, FIG 220 socket part threaded fittings are widely specified in:

• Residential and commercial plumbing systems

• Municipal water and gas distribution networks

• Industrial plants and processing facilities

• Mechanical and HVAC engineering projects

For procurement teams and contractors, choosing a certified FIG 220 socket from a reliable manufacturer reduces installation risks, minimizes maintenance costs, and ensures compliance with local regulations.

Choosing a Reliable Supplier

When sourcing FIG 220 socket part threaded fittings, buyers should consider:

• Compliance with EN, ASME, or ISO standards

• Thread accuracy and dimensional consistency

• Surface finish quality

• Manufacturer experience and quality control

As an established manufacturer and exporter of threaded pipe fittings, KOXY provides FIG 220 sockets that meet international standards and project-level requirements. With stable production capacity and strict inspection procedures, KOXY supports distributors, contractors, and engineering companies with consistent quality and technical support.

Conclusion

The FIG 220 Socket Part Threaded remains a fundamental component in threaded piping systems worldwide. Its standardized dimensions, multiple thread options, and durable malleable iron construction make it a dependable choice for water, gas, and industrial applications.

By understanding the applicable standards, specifications, and selection criteria, buyers and engineers can make informed decisions and ensure long-term system reliability. For projects that demand consistency, safety, and global compatibility, sourcing FIG 220 threaded sockets from a trusted supplier like KOXY is a practical and proven solution.