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Thread Fittings

  • Galvanized Malleable Iron Reducing Tee 25×20×20
    Brief:
    Our Tee Reducer Fittings are made from high-quality malleable iron and are available in both galvanized and black finishes. Designed to connect pipes of different sizes, they are ideal for use in fire protection systems, plumbing, and industrial pipelines. With threaded BSP or NPT connections and compliance with international standards, these fittings ensure durability, easy installation, and long-term performance under pressure.
  • ISO 7-1 BSP Malleable Iron Square for Plumbing
    Brief:
    The Malleable Iron Square Plug is a durable pipe fitting designed with ISO 7-1 BSP threaded ends. Available in galvanized and black finishes, it offers strong corrosion resistance and reliable sealing performance. Commonly used to close off pipe ends in plumbing, fire protection, and industrial applications, this plug meets FM and UL safety certifications.
  • 80mm 3" GI Beaded Plug BSP End Cap
    Brief:
    The Beaded Plug is a type of pipe fitting designed to securely seal the end of a threaded pipe. Made from high-quality malleable cast iron, it features a beaded rim for enhanced strength and a tighter grip during installation. Available in both galvanized and black finishes, this plug is corrosion-resistant and suitable for high-pressure plumbing systems. It complies with standards such as EN10242 and ISO 7-1, ensuring durability and reliability in water, gas, and fire protection systems.
  • Malleable Iron Tee Reducer (63mm To 3/4") Pipe Fittings
    Brief:
    Our Tee Reducer Fittings are made from high-quality malleable iron and are available in both galvanized and black finishes. Designed to connect pipes of different sizes, they are ideal for use in fire protection systems, plumbing, and industrial pipelines. With threaded BSP or NPT connections and compliance with international standards, these fittings ensure durability, easy installation, and long-term performance under pressure.
  • Galvanzied Elbow Fitting
    Brief:
    Malleable iron pipe fitting 90 elbows are mainly used to change the flow direction of pipes in pipeline systems and help pipes to be arranged at corners in space. It is widely used in fire protection systems, industrial pipelines, building water supply and drainage systems, heating, ventilation and HVAC systems, and municipal pipe networks, especially in situations where the direction of the pipe needs to be adjusted or obstacles need to be bypassed. With its excellent corrosion resistance, pressure resistance, and high temperature resistance, Elbow pipe fitting have become an indispensable key accessory in various pipeline systems.
  • Tee Thread Fitting
    Brief:
    The tee in malleable cast iron pipe fittings is mainly used in pipeline systems to connect three pipelines. It is usually used to change the flow direction or diversion/convergence of fluids. It can distribute or merge fluids in a specific direction in the pipeline to ensure the efficient operation of the pipeline system. Tees are widely used in fire protection systems (such as the distribution of sprinkler pipe networks), industrial pipelines (such as the diversion of fluids such as petroleum and chemicals), building water supply and drainage systems (used to connect drainage pipes in different directions), HVAC systems (diversion of air or water flow), etc., especially in situations where fluids need to be guided to multiple directions. Malleable cast iron tees have become key components in pipeline systems in many industries due to their excellent corrosion resistance and high strength.
  • Socket Reducing Tee Pipe Fitting – Galvanized Or Black Threaded Malleable Iron
    Brief:
    The Socket Reducing Tee is a threaded malleable iron pipe fitting designed to connect pipes of different diameters. Available in galvanized and black finishes, it features strong corrosion resistance and is widely used in plumbing, fire protection systems, and industrial pipelines. With precision BSP/NPT threads, it ensures a reliable and leak-proof connection.
  • Galvanized Pipe End Protector Malleable Iron Pipe Plug Plumbing Fitting Cap
    Brief:
    This FM approved Zinc Plated Pipe Fitting Cap is made from high-quality malleable iron and features an advanced zinc plating finish for excellent corrosion resistance and durability. Designed to seal the end of piping systems, it is widely used in fire protection, plumbing, and HVAC applications. Compliant with FM certification standards, this pipe cap ensures safety and reliability for demanding industrial and commercial piping installations. With precision threading for easy installation and a tight seal, it is the ideal solution to protect and close pipe ends efficiently.
  • Black Malleable Iron Reducing Elbow Fitting | BSP/NPT Threaded 90 Degree Elbow for Plumbing And Fire Systems
    Brief:
    Our Reducing Elbow is made from high-quality malleable cast iron, available in both galvanized and black finishes, ensuring excellent durability, corrosion resistance, and long service life. This 90-degree elbow fitting is designed to connect two pipes of different sizes at an angle, making it ideal for tight spaces or directional changes in pipe systems.

    The threaded ends comply with BSP or NPT standards, allowing for a secure and leak-free connection in various applications. Commonly used in plumbing, gas lines, fire protection systems, and industrial piping networks, this fitting provides a reliable solution for pipe size transitions without compromising flow efficiency.
     
  • FM/UL Approved Malleable Iron Cross Fitting Galvanized 4-Way Pipe Joint
    Brief:
    The Cross in malleable cast iron pipe fittings is mainly used in pipeline systems to connect four pipelines. It allows pipelines to be diverted or converged in different directions, ensuring that the fluid can flow efficiently and stably to multiple branch pipelines. crossis widely used in pipeline systems that require multi-directional diversion or convergence, such as fire protection systems (distributing water flow to multiple sprinklers), industrial pipelines (such as fluid distribution in the petroleum and chemical industries), building water supply and drainage systems (used to connect multiple pipeline branches) and other fields. cross is often used in high pressure and high temperature environments due to its good corrosion resistance and high strength to ensure the stability and safety of the pipeline system.
  • Galvanized Union Connector | Malleable Iron Fitting for Water & Fire Systems
    Brief:
    Union in malleable cast iron is a fitting used to connect two sections of pipes, which is easy to disassemble and repair. It uses threaded connection to ensure the firm connection of pipes and provide effective sealing to prevent leakage. Due to its quick connection and disassembly characteristics, Union is widely used in pipe systems that require regular maintenance and inspection, especially in fire protection systems, construction engineering, petrochemicals, HVAC and other fields, to ensure the safety and reliability of pipe systems.
  • Red Elbow
    Brief:
    The malleable iron reducing elbow is a threaded pipe fitting used to connect two pipes of different sizes while changing the direction of the flow, typically at a 90-degree or 45-degree angle. Made from high-quality malleable cast iron, it offers excellent strength, pressure resistance, and durability. This fitting is commonly used in plumbing, fire protection systems, HVAC, and gas distribution networks.

    Available in black or hot-dip galvanized finish, the reducing elbow ensures corrosion resistance and long-term performance. It complies with international standards such as ISO 7-1, BS 21, and ANSI B1.20.1, and is ideal for applications where space-saving and efficient pipe transitions are required.

Malleable Iron Thread Fittings


Thread fittings are essential components used in piping systems to join pipes or tubes through threaded connections. These fittings come in various materials, including stainless steel, brass, and carbon steel. The key advantage of thread fittings is their ability to provide secure, leak-proof connections that can withstand high pressure. They are highly durable and resistant to corrosion, making them ideal for applications in water, gas, and oil pipelines. Thread fittings are commonly used in industries like oil and gas, HVAC, plumbing, and construction. Threaded connections are easy to install and offer excellent flexibility for maintenance and repairs.


While these components are available in many materials, we specialize in providing a premier selection of high-quality, durable malleable iron thread fittings engineered for superior reliability. Built on the promise of "Safer, No Leak!," our fittings embody all the key advantages of threaded connections while offering exceptional longevity, with a service life that can exceed 50 years with simple maintenance. Whether for industrial, commercial, or residential use, each thread fitting is crafted to meet the highest standards for a wide array of applications.


Uncompromising Quality and Technical Excellence

Our expertise is forged in precision engineering and an unwavering commitment to quality. Every threaded pipe fitting in our collection is a testament to superior manufacturing, giving you the confidence to build robust and dependable systems.


Built to International Standards

> Certified Materials: Our fittings are crafted from high-grade blackheart malleable cast iron, conforming to EN-GJMB-350-10 and ISO 5922 standards.

> Precision Engineering: Design and dimensions strictly adhere to international standards ISO 49 and EN 10242.

> Accurate Threading: We provide both BSPT (ISO 7-1 / EN 10226) and NPT (ASME B 1.20.1) thread connection types to meet diverse project requirements.


Superior Material and Manufacturing

> Exceptional Strength: Each fitting boasts a minimum tensile strength of 350 MPA and an elongation rate of 10%, ensuring it can withstand demanding operational pressures.

> Advanced Corrosion Resistance: A hot-dip galvanized zinc coating with an average thickness of 70μm provides robust protection against rust and corrosion, ensuring long-term durability.

> Rigorous Quality Control: To guarantee our "Safer, No Leak!" promise, every single fitting undergoes a stringent 0.6 MPa air pressure test before packaging to ensure a perfect seal.


Designed for a Multitude of Applications

Our deep experience in the industry allows us to offer versatile and practical solutions that professionals rely on every day. Our fittings are designed not only to perform but to simplify installation and adapt to a vast range of environments.


A Comprehensive Range for Every Need

We offer an extensive catalog of thread pipe fitting types to ensure you can find the perfect component for any configuration, including:

> Elbows (90°, 45°, M&F, Reducing)

> Tees (Equal, Reducing, Y-Branch)

> Sockets & Couplings (Equal, Reducing)

> Nipples (Hexagon, Reducing)

> Unions (Flat Seat, Taper Seat, M&F)

> Reducers, Bushings, Plugs, and Caps

> Flanges (Round, with and without bolt holes)


Versatile Application Across Industries

Jianzhi threaded fittings are trusted across numerous sectors for their proven performance and reliability. Key applications include:

> Gas Pipelines

> Fire Protection Systems & Fire Pipes

> Water Supply & Treatment Systems

> Heating and HVAC Systems

> Oil Pipelines


Benefits for the Professional

> Easy Installation: Our high-precision threads exceed BS standards by 40%, making installation easier for workers and saving valuable time and labor costs.


> Guaranteed Performance: Our fittings are rated for a maximum working pressure of 363 PSI (2.5 MPa) within a temperature range of -20°C to 120°C, providing a wide operational margin for your systems.


The Jianzhi Guarantee: A Legacy of Trust

When you choose our fittings, you are choosing a brand built on decades of expertise, certified quality, and proven results. We provide the trustworthiness you need to build with absolute confidence.


A Legacy of Manufacturing Excellence

As a leading manufacturer of cast iron pipe fittings since 1982, we have built a global reputation for quality. Our operations are supported by over 4,500 employees and 350 technical engineers, with a distribution network that spans more than 100 countries.


Certified Quality You Can Trust

Our commitment to quality is validated by the world's most recognized certification bodies. Our products and processes are certified to meet the following standards:

> ISO 9001, ISO 14001, & ISO 18000

> UL Listed

> FM Approved

> CE Certified


Proven in Landmark Projects

Our fittings are trusted for use in some of the world's most demanding and high-profile construction projects, demonstrating their reliability in critical applications. Notable projects include:

> Beijing Daxing International Airport

> National Stadium (Bird's Nest)

> Shanghai World Financial Center

> Canton Tower


Build with Confidence

Choose durability, safety, and performance backed by over 40 years of manufacturing expertise. Our malleable iron thread fittings provide the strength and reliability required for your most critical projects. Explore our extensive selection of threaded fittings below and build your next piping system with the confidence that comes from using a trusted industry leader.

Inquiry

Telephone

+86-130-1137-4563

Sales Phone

+86-188-3320-7623

WhatsApp

+8613011374563

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