Carbon steel buttweld pipe fittings are pipe fittings that are connected by welding after beveling the ends of both the pipe and the pipe fittings. Its main features include:

High strength and high rigidity: It is provided with a continuous metal structure through welded connections, enabling it to withstand high pressure and high temperature environments.
Good sealing performance: The welded joint has excellent sealing performance, which can reduce the risk of pipeline leakage.
Processing flexibility: Pipe fittings of different sizes, wall thicknesses and curvatures can be customized according to actual needs to adapt to complex pipe layouts.
Corrosion resistance: The butt-weld pipe fittings made of corrosion-resistant materials are suitable for use in corrosive medium environments, which extends the service life of the pipeline system. Coatings can also be applied to pipe fittings to prevent direct contact with corrosive media, thereby protecting the pipeline system from corrosion.

Central Steel takes pride in manufacturing high-quality pipe fittings that comply with international standards, ensuring their sturdy structure, beautiful design and smooth surface. We have advanced production plants and the latest mechanical equipment, operated by skilled and well-trained professionals who have rich experience in manufacturing carbon steel butt-weld pipe fittings.

There are various types of carbon steel butt-welded pipe fittings. Common types include:

Elbow: It is used to change the direction of the pipe. Common angles include 45°, 90° and 180°, and it is divided into two types: long radius (LR) and short radius (SR).
Tee: It is used for pipe branch and is divided into equal diameter tees and different diameter tees.
Reducer: It is used to connect pipes of different diameters and is divided into concentric reducers and eccentric reducers.
Cap: Used to seal the end of pipes.
Stub End: Used in conjunction with loose flanges for easy disassembly.

Materials and Standards

The commonly used materials for carbon steel butt-welded pipe fittings include:
ASTM A234 WPB: Carbon steel forged pipe fittings suitable for medium and high-temperature services.
ASTM A420 WPL6: Carbon steel pipe fittings suitable for low-temperature environments.
ASTM A860 WPHY 42-70: High-strength carbon steel pipe fittings, suitable for high-pressure environments.

The design and manufacture of carbon steel butt-weld pipe fittings follow the following standards:
ASME B16.9: Dimensional standards for forged butt-welded steel pipe fittings manufactured in factories.
MSS-SP-75: Manufacturing standard for high-strength butt-welded pipe fittings.
ANSI B36.10 / B36.19: Dimensional standards for carbon steel and stainless steel pipes.

Advantages and disadvantages

Advantages:
Firm connection: Welded connection offers a high-strength and well-sealed connection method, suitable for high-pressure and high-temperature environments.
Low fluid resistance: The interior is smooth, reducing the frictional resistance of the fluid and improving the transportation efficiency.
Wide application range: It can be used in various media and working conditions, including corrosive media and high-temperature and high-pressure environments.
Low maintenance cost: Strong durability reduces the frequency of replacement and repair, lowering maintenance costs.

Disadvantage:
Complex installation: Professional welding techniques and equipment are required, and the installation process is relatively complicated.
Non-detachable: Once the welded connection is completed, it is difficult to disassemble and is not suitable for occasions that require frequent disassembly and assembly.

Carbon steel welded pipe fittings are widely used in the following fields:

Petroleum and natural gas: Pipeline systems used for transporting crude oil, natural gas and other media. Chemical industry: Pipeline systems suitable for transporting various chemical media. Power industry: Used for pipe connections of equipment such as boilers and heat exchangers. Water treatment: Used in sewage treatment and water supply and drainage systems.