Butt Weld Tees Manufacturer | ASME B16.9 EN10253 GOST 17376 Steel Pipe Tees
Butt weld tees are widely used pipe fittings designed to connect or branch pipelines in industrial piping systems. Manufactured according to ASME B16.9, MSS SP, EN, and GOST standards, they are available in carbon steel, stainless steel, and alloy steel for oil and gas, petrochemical, power generation, and pipeline engineering applications.
Butt Weld Tees Manufacturer and Supplier
Butt weld tees are essential pipe fittings used to connect or branch pipelines in industrial piping systems. They allow fluid to flow in two directions while maintaining a strong and reliable welded connection. Compared with threaded or socket weld fittings, butt weld tees provide better strength, improved pressure resistance, and smoother flow performance.
These fittings are widely used in oil and gas pipelines, petrochemical plants, power generation facilities, water treatment systems, and industrial pipeline networks. Butt weld tees are manufactured according to international standards such as ASME B16.9, MSS SP, EN standards, and GOST standards, ensuring compatibility with global piping systems.
As a professional pipe fittings manufacturer, we supply high-quality butt weld tees in carbon steel, stainless steel, and alloy steel for various industrial applications.
Types of Butt Weld Tees
Butt weld pipe tees are available in different types depending on the pipeline configuration and flow requirements.
Equal Tee
An equal tee, also called a straight tee, has three outlets of the same diameter. This type of fitting is used when the branch pipe has the same size as the main pipeline.
Equal tees are widely used in general industrial piping systems, oil pipelines, and water supply networks.
Reducing Tee
A reducing tee has a branch outlet that is smaller than the main pipe diameter. It allows pipelines of different sizes to be connected while maintaining efficient fluid distribution.
Reducing tees are commonly used in process piping systems, refinery pipelines, and mechanical equipment installations.
Standards for Butt Weld Tees
Butt weld tees are produced according to internationally recognized piping standards to ensure dimensional accuracy and compatibility with industrial piping systems.
Common standards include:
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ASME B16.9 – Factory-made wrought butt welding fittings
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MSS SP-75 – High-test wrought butt welding fittings
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EN 10253 – European standard for butt welding fittings
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GOST 17376 – Butt weld tees used in Russia and CIS countries
These standards define the dimensions, tolerances, and manufacturing requirements for butt weld fittings used in industrial pipelines.
Materials of Butt Weld Tees
Butt weld tees are manufactured in various materials depending on operating conditions such as temperature, pressure, and corrosion environment.
Carbon Steel Butt Weld Tees
Carbon steel tees are commonly used in general industrial piping systems.
Typical material grades include:
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ASTM A234 WPB
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ASTM A420 WPL6
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ASTM A860
These materials provide good mechanical strength and are widely used in oil and gas transmission pipelines.
Stainless Steel Butt Weld Tees
Stainless steel tees offer excellent corrosion resistance and durability in harsh environments.
Common grades include:
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ASTM A403 WP304 / WP304L
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ASTM A403 WP316 / WP316L
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ASTM A403 WP321
They are widely used in chemical processing, food production, and pharmaceutical industries.
Alloy Steel Butt Weld Tees
Alloy steel tees are designed for high-temperature and high-pressure applications.
Typical grades include:
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ASTM A234 WP11
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ASTM A234 WP22
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ASTM A234 WP91
These materials are commonly used in power plants and refinery pipelines.
Size Range and Specifications
Butt weld tees are available in a wide range of sizes and wall thicknesses to meet different piping requirements.
Typical specifications include:
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Size range: 1/2 inch to 72 inch
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Wall thickness: SCH 10 to SCH 160 / XXS
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Manufacturing method: Hot forming or cold forming
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Connection type: Butt weld
All fittings undergo strict quality inspection to ensure dimensional accuracy and compliance with international standards.
Applications of Butt Weld Tees
Butt weld tees are widely used in many industrial sectors due to their strength, durability, and reliable welded connection.
Common applications include:
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Oil and gas pipelines
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Petrochemical plants
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Power generation systems
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Chemical processing facilities
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Shipbuilding industry
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Water treatment systems
Their welded structure ensures leak-proof performance and long service life in demanding industrial environments.
Frequently Asked Questions
What is a butt weld tee?
A butt weld tee is a pipe fitting used to create a branch connection in a pipeline. It is welded directly to the pipe, forming a strong and permanent joint.
What is the difference between equal tee and reducing tee?
The difference lies in the size of the branch outlet.
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Equal tee – all three outlets have the same diameter
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Reducing tee – the branch outlet is smaller than the main pipe
What standards are butt weld tees manufactured to?
Most butt weld tees are produced according to ASME B16.9, with additional standards such as MSS SP, EN 10253, and GOST 17376 depending on project requirements
In addition to butt weld reducers, we also supply a full range of butt weld pipe fittings, including
