What are the types and uses of malleable pipe fittings?

by | Jun 9, 2025 | News

One of the critical components of plumbing and piping systems are malleable iron pipe fittings, which they use to ensure the smooth and efficient passing of liquids and gases. This document will focus on the different types of malleable iron fittings, their advantages, and their common applications.

What Are Malleable Iron Pipe Fittings?

Malleable iron pipe fittings work as connectors that link two pipe sections to allow gas and liquid to flow without a disturbance. The existence of threads on both ends allows for quick and solid fitting.

Pipe Joints 90 Degree Elbow Reducing Fig.90R

The most important features of malleable iron fittings

  • Longevity: Malleable iron fittings are thoroughly tested and are known to be the most reliable for a lot of time, even under the harshest of conditions.
  • Withstanding High Pressure: These fittings are capable of holding high pressure hence they can be employed in systems that require a large amount of energy to run.
  • Malleable Iron: This metal possesses the characteristic of elasticity, thus it can successfully absorb vibrations and temperatures without any fear of breaking, and hence, it guarantees safe connections.
  • Impact of Temperature: Under the condition of extreme heat or cold, malleable iron fittings’ performance will not be compromised and they can be the one serving plumbing systems that are exposed to various temperature ranges.
  • Corrosion Resistance: High-purity zinc has been used to galvanize malleable iron fittings with the resultant product being the one that is capable of resisting corrosion thereby lengthening the life cycle of the fitting.
  • Ease of Installation: The threaded pattern of these fittings is what brings an end to a complicated assembly process.

Types of Malleable Iron Fittings

Malleable iron fittings appear in many shapes, each having its part to play in the pipes. Casting of malleable iron using a mix of metals and a particular treatment, for conversion into a finished product is the common practice. Here are some standard assortments of malleable pipe fittings:

1. Elbows

Elbows are mainly used for changing the direction of the pipe. They are offered as 90-degree and 45-degree angles, and may be utilized to navigate through the pipes’ obstacles smoothly.

2. Tees

Tees are utilized to provide branches from the main line. The equal and reducing dimensions of tees installation allow for the points at which multiple pipes join to be easily connected.

3. Crosses

The main function of crosses is that of enabling the establishment of four pipes at a single point, i.e. the origin to create very complex piping configurations.

4. Reducers

Reducers are devices that are used to connect pipes of various diameters and thus in a convenient way alter the flow and pressure in pipelines.

5. Sockets

Sockets are suitable for the connections of two pipes of the same diameter.

6. Nipples

Nipples are the parts of the pipe which are short and have threads at opposite ends.

7. Caps and Plugs

These two types of parts are versatile and are not subject to the restrictions of seals. They are beneficial in that once placed, they act as barriers and the pipelines are free from impurities and dust.

8. Nuts

Nuts are the components that together with other fittings complete the connections and maintain system integrity.

Uses of Malleable Iron Pipe Fittings

Malleable iron fittings have different industrial applications, they are used in the following most-time instances:

1. Plumbing Systems

In both private and public plumbing, malleable iron fittings are bonded with metal tubes to supply water and discharge the water system.

2. HVAC Systems

The involvement of malleable iron fittings is a must in the heating, ventilation, and air conditioning system (HVAC) for ducts and pipes linking the major parts and facilitating the free flow of air and constant temperature.

3. Gas Lines

Due to its high-pressure resistance, ductile iron pipe fittings are often used in gas pipelines to prevent gas leakage and avoid serious damage to people’s lives and personal property.

4. Fire Protection Systems

Malleable iron fittings are connectors that link the pipes of the sprinkler systems.

5. Industrial Applications

Widely, malleable iron fittings are part of different works of industry such as oil and gas pipelines, cooling and lubrication systems, pressurized air pipework, etc.

Conclusion

Malleable iron fittings represent an indispensable part of different piping systems as they provide resistance, durability, and flexibility. They have a wide range of types in store, and you can get the most appropriate one.

Jianzhi Group has been focusing on creating high-grade malleable iron pipe fitting products that come in different sizes to cater for the demands of the plumbing sector. Please dive deep into our catalog to gain more insights. Of course, if you have any questions, feel free to contact us!