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Pipe Fittings

Your Professional Pipe Fittings Supplier

 

Tianjin Shenzhoutong Steel Pipe Co.,Ltd is a manufacturer and exporter dedicated to steel pipe industry. There are three main kinds of products in our factory--ERW Steel Pipes, Spiral Steel Pipes and Oil Casing Pipes. The products are widely used in petroleum, natural gas, gas, coal, machinery, electric power, piling and other purposes.


Accept ODM/OEM Services
All steel pipes produced by our company can be customized to meet the specific requirements of various industries and applications. The customization process begins with a thorough consultation between our technical experts and the client to ensure that all specific needs are addressed.

 

Production Equipment
Our company utilizes state-of-the-art international technological equipment, including W-FF molding, solid-state high-frequency induction welding, ultrasonic testing, and magnetic flux leakage detection. We also employ high-end testing equipment such as metallographic analysis instruments, Vickers hardness testers, impact testing machines, spectrum analyzers, and universal testing machines.

 

Honor Certificates
Since its establishment, our company has achieved numerous international certifications and honors, including API 5L, API 5CT, ISO 9001-2008, CE Certificate, pressure pipe production license, industrial products production license, Chinese petroleum and petrochemical membership card, China Quality Product Certification, Tianjin Famous Brand, exemption product, and recognition as one of the top 100 private enterprises in Tianjin.

 

Sales Market
Our products are exported to regions such as the Middle East, South America, North America, the European Union, and Southeast Asia. Over the years, we have earned an excellent reputation among customers worldwide.

First 123 Last
Standard Nipples and Pipe Fittings Sizing

 

Pipe Size

Outside Diameter (O.D.)
Fraction Inch
(quick reference only)

Outside Diameter (O.D.)
Actual - inches

Circumference

Threads Per Inch

1/8"

13/32"

0.405"

1.272"

27

1/4"

35/64

0.540"

1.696"

18

3/8"

43/64

0.675"

2.121"

18

1/2"

27/32

0.840"

2.639"

14

3/4"

1-3/64

1.050"

3.299"

14

1"

1-5/16

1.315"

4.131"

11 1/2

1 1/4"

1-23/32

1.660"

5.215"

11 1/2

1 1/2"

1-29/32

1.900"

5.969"

11 1/2

2"

2-3/8

2.375"

7.461"

11 1/2

2 1/2"

2-7/8

2.875"

9.032"

8

3"

3-1/2

3.500"

10.995"

8

4"

4-1/2

4.500"

14.137"

8

5"

5-5/8

5.563"

17.476"

8

6"

6-5/8

6.625"

20.812"

8

8"

8-5/8

8.625"

27.095"

8

10"

10-3/4

10.750"

33.771"

8

12"

12-3/4

12.750"

40.054"

8

 

Types of Pipe Fittings

The pipe fittings produced by our company mainly include the following types:

 
 

Flanges

A flange is another pipe fitting used to connect pipes,Flanges pumps, valves, and other components to form a full-fledged piping system. They come with a flexibility of easily cleaning or inspecting the whole system from within. They are fixed to the pipes using welding, threading or screwing techniques and then finally sealed with the help of bolts. They are used in residential pump systems and majorly for industrial purposes.

 
 
 

Tee

This T-shaped pipe fitting used in the plumbingtee system has one inlet and two outlets arranged at an angle of 90 degrees to the main pipe. This kind of fitting is used to connect the two pipes and make their flow direction as one. If all the three sides of this fitting are same in size, it is called equal tee, otherwise unequal tee.

 
 
 

Elbows

Such pipe fittings are used to change the direction of the flow. ElbowsThey are majorly available in two standard types - 90 and 45 degree angles owing to their high demand in plumbing. The 90 degree elbow is primarily used to connect hoses to water pumps, valves, and deck drains, while the 45 degree elbow is mostly used in water supply facilities, electronic and chemical industrial pipeline networks, food, air-conditioning pipelines, garden production, agriculture, and solar-energy facility.

 

 

Materials of Pipe Fittings
Pipe Flange
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1. Stainless Steel
Stainless steel is a popular choice for pipe fittings due to its excellent corrosion resistance, strength, and aesthetic appeal. It is often used in industries where hygiene and corrosion resistance are critical, such as food processing, pharmaceuticals, and chemical processing.
Advantages:
● Corrosion Resistance: Stainless steel resists rust and corrosion, making it ideal for harsh environments.


● Strength: It offers high tensile strength and can handle high pressure and temperature.


● Durability: Stainless steel fittings have a long lifespan and require minimal maintenance.

 

2. Carbon Steel
Carbon steel is another common metallic material used for pipe fittings. It is known for its strength and affordability, making it suitable for many industrial applications. Carbon steel fittings are often used in construction, oil and gas, and water supply systems.
Advantages:
● Strength: Carbon steel is known for its strength and ability to withstand high pressures.


● Cost-Effective: It is generally less expensive than stainless steel.


● Versatility: Suitable for various applications, including high-temperature and high-pressure environments.

 

3. Brass
Brass is an alloy of copper and zinc, offering good corrosion resistance and machinability. It is commonly used for fittings in residential and commercial plumbing systems.
Advantages:
● Corrosion Resistance: Brass fittings resist corrosion and are suitable for use in water systems.


● Machinability: Easy to machine and shape, making it suitable for complex designs.


● Aesthetic Appeal: Brass fittings have a polished, attractive appearance.

 

4. PVC (Polyvinyl Chloride)
PVC is a type of plastic commonly used for pipe fittings in water and drainage systems. It is lightweight, durable, and resistant to corrosion and chemicals. Pipe fitting material for PVC is ideal for a range of applications due to its affordability and performance.
Advantages:
● Lightweight: Easy to handle and install due to its low weight.


● Corrosion Resistance: Resistant to corrosion and chemical damage.


● Cost-Effective: Generally less expensive than metal fittings.

 

5. CPVC (Chlorinated Polyvinyl Chloride)
CPVC is a modified form of PVC that can handle higher temperatures. It is often used in hot water systems and applications requiring greater temperature resistance.
Advantages:
● Temperature Resistance: Can withstand higher temperatures compared to standard PVC.


● Corrosion Resistance: Resists corrosion and chemical damage.


● Ease of Installation: Lightweight and easy to cut and join.

 

6. PEX (Cross-Linked Polyethylene)
PEX is a flexible plastic material used for pipe fittings in water supply systems. It is known for its flexibility, ease of installation, and resistance to freezing.
Advantages:
● Flexibility: Can be bent and shaped easily, reducing the need for fittings.


● Resistance to Freezing: Less likely to burst in freezing conditions compared to rigid pipes.


● Durability: Resistant to scale and chlorine, which extends its lifespan.

 

Surface Treatment of Pipe Fittings

Anti-corrosion coating

Applying a layer of anti-corrosion paint, spraying, or coating with materials such as zinc on the surface of the pipe fittings to prevent corrosion.

Galvanization

Steel pipe fittings are often hot-dip galvanized or electroplated to increase their corrosion resistance.

Sandblasting

Removing oxide layers, oil stains, and other contaminants from the surface of pipe fittings by sandblasting to make it cleaner and more conducive for subsequent coating.

Polishing

Polishing the surface of pipe fittings to improve smoothness and glossiness, enhancing the appearance.

Hardening treatment

Some special pipe fittings may undergo surface hardening treatment to enhance wear resistance.

Acid pickling

During production, pipe fittings are often acid pickled to make the surface smoother, free of oxide layers, and rust spots.

 

Pipe Fitting Inspection & Testing

Non-Destructive testing

Based on the type of fittings any of the following Non-Destructive testings are performed on finished fittings to ensure the soundness of product.
● Ultrasonic
● Radiography (Only for Weld)
● Magnetic particle test
● Liquid penetrant test
● And Positive Material Identification

Destructive Testing

Destructive Testings are performed to check the strength of the body and weld of the product.
● The proof test is also known as type test or burst test.
● Tensile test
● Impact test / Charpy V-Notch Test
● Hardness test

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Metallurgical Tests

Metallurgical Tests are performed on fittings body and weld to confirm standard requirements
● Micro Analysis or Chemical Analysis of
● Raw material
● Product
● Weld
● Macro Analysis
● Weld

Special Tests

● Special tests are carried out on fittings to confirm its ability to withstand in corrosive environments. These tests are
● IGC- Intergranular Corrosion Test(SS)
● Ferrite (SS)
● HIC- Hydrogen-induced Cracking
● And SSC- Sulfide Stress Corrosion Cracking
● Grain size (AS & SS) of material are checked to confirm microstructure

 

Applications of Pipe Fittings

1

Oil and Gas Industry
The oil and gas industry relies heavily on pipelines to transport crude oil, natural gas, and refined products. Pipe fittings are essential for constructing and maintaining these pipelines, which often span vast distances.

2

Chemical Processing
In chemical plants, a variety of corrosive and hazardous substances are transported through pipelines. Specialized pipe fittings made from materials like stainless steel or Teflon are essential to ensure the safe transport of these chemicals without contamination or leaks.

3

Water Treatment and Distribution
In the field of water treatment and distribution, pipe fittings are indispensable. They enable the distribution of clean drinking water to communities and ensure the safe transfer of wastewater for treatment.

4

Power Generation
Power plants rely on pipelines to transport water, steam, and gases to generate electricity. Properly selected and maintained pipe fittings are crucial for the safe and efficient operation of these facilities.

5

Pharmaceutical Industry
The pharmaceutical industry has stringent requirements for purity and sanitation. High-quality, sanitary pipe fittings are used to transport pharmaceutical ingredients without contamination, ensuring the safety and efficacy of the products.

6

Plumbing
In commercial buildings, pipe fittings are used extensively for plumbing systems, providing clean water for drinking, sanitation, and heating systems. Well-designed plumbing systems contribute to the comfort and safety of occupants.

7

HVAC Systems
Heating, ventilation, and air conditioning (HVAC) systems rely on pipe fittings to distribute hot and cold water, steam, and refrigerants. Properly maintained fittings are essential for maintaining comfortable indoor environments.

8

Fire Protection
Fire protection systems, such as sprinklers, use pipe fittings to ensure the quick and efficient delivery of water in case of a fire emergency, safeguarding lives and property.

 

 
Step-by-Step Guide to Custom Pipe Fitting
 
01/

Measure the Area
Accurate measurements are a compulsory component for every custom piping job. Use a measuring tape or caliper to check the length and diameter of pipes and the space they will occupy. An accurate fit can significantly reduce the possibility of error.

02/

Cut Pipes to Fit
A pipe cutter would be the optimal method for cutting the pipelines by their measured dimensions. To prevent complications during subsequent installation, edges should be grime-free and straight. Other edges that may impede a strong connection can be eliminated through deburring.

03/

Prepare the Pipe Ends
Sand and polish the pipe extremities before installing the connectors. This facilitates establishing a seamless link. It ensures that the connectors will be securely attached without any leakage.

04/

Install Fittings
Secure fittings to pipes according to your custom design. Whether using elbows, tees, or couplings. Also, they should be firmly attached so that leaks are avoided.

05/

Seal and Secure Fittings
Depending on the material, fittings may be sealed through threading, welding, or bonding. Welding is the most effective method for metal pipe applications, as it makes a secure and leak-proof connection—specialized adhesives used in PVC or plastic applications.

06/

Testing the Fitting
Once all fittings are in place, test the system for leaks or issues. Pressure tests and visual checking are common ways to ensure the custom pipe fitting is secure and functioning correctly.

 

 

Shipment

 

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Our Factory

 

Tianjin Shenzhoutong Steel Pipe Co.,Ltd ,with total investment of RMB 260 million, was founded in 2001 and occupied 86,000 square meters and building area 28,000 square meters. It is located in the Chinese Steel Pipes Base - Da qiu zhuang, Tianjin. 46 kilometers away from Tianjin Port and 3 km away from the high-speed exit, So the transportation is very convenient. More than 400 employees and over 70 Senior staff are working in the company.

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Our Certificate

 
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FAQ

 

Q: What type of pipe fittings are best for higher temperatures and pressures?

A: This mostly depends on the material the fitting is made of. Stainless steel is usually the best choice. It offers great resistance to high temperatures, pressures, stresses, and corrosion.

Q: What is the most common type of pipe fittings?

A: Well, we cannot name only one, as the use of a fitting depends on the function you have in mind. However, elbows, tees, and couplings are widely used in different plumbing and pipe systems.

Q: How should I choose a fitting?

A: Choosing the right fitting is essential. You should consider the function you want it to perform, the media being conveyed in the system, the system design, and the conditions, such as the temperature, pressure, etc. For more details, read the section above about factors to consider when selecting a fitting.

Q: Can I install a pipe fitting myself?

A: It depends on the type of fitting and your system’s conditions. Some fittings are simple and you can install them with your hands, a wrench, or any other common tools, while others need specialized tools and techniques.

Q: How can I prevent leaks in pipe fittings?

A: Several factors should be considered.
● Choose the right size and dimension,
● Make sure the material is compatible,
● Proper installation,
● Apply the right sealant or gasket,
● Maintain and inspect them regularly.

Q: Can I reuse a pipe fitting?

A: Fittings can be reused if they do not show any signs of wear, degradation, or any other damage.

Q: How to identify the pipe fitting size?

A: To identify pipe fitting size, measure the inside diameter of female threads or the outside diameter of male threads with a caliper or ruler. Subtract 1/4 inch from this measurement to find the nominal pipe size. Consult a pipe size conversion chart to match your measurement with the fitting nominal size for accurate results.

As one of the most professional pipe fittings manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy high-grade pipe fittings from our factory.

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