What Is a Tee Pipe Fitting?
Tee fittings (also known as tee joints or T pipe fittings) are essential components used to connect three sections of pipe. They allow fluid to split or merge by forming a 90-degree branch. These fittings are widely applied in water supply, oil and gas, chemical fluid systems, and construction projects.
JIZHONG, a trusted Chinese manufacturer, offers a complete range of T pipe fittings for B2B buyers around the world.
Types of Tee Fittings by Diameter

1.Equal Tee (Straight Tee):
All three ends have the same diameter. It is used when the flow path size remains consistent.
2.Reducing Tee (Unequal Tee):
The branch pipe has a smaller diameter than the run pipes. It allows smooth transition and flow control between different pipe sizes.
Types by Connection Form
1.Butt-Weld Tee:
Welded end-to-end with other pipes. Common in industrial and high-pressure environments.
2.Socket-Weld Tee (Socket-Type Tee):
Pipes are inserted into the tee ends and welded or glued. Used in PVC, CPVC, and smaller steel pipelines.
3.Threaded Tee:
Features internal threading to connect to male-threaded pipes. Suitable for plumbing and low-pressure systems.
4.Tube-Type Tee (Push-Fit or Compression):
Allows for easy tightening or push-fit assembly without welding or threading.
Types by Branch Pipe Form
1.Straight Tee (Positive Tee):
The branch pipe is perpendicular to the main pipe.
2.Oblique Tee (Inclined Tee):
The branch pipe connects at an angle to allow smoother fluid direction change.
Classification by Material
- Stainless Steel Tee – corrosion-resistant and strong.
- Carbon Steel Tee – widely used in industrial applications.
- Copper Tee – common in plumbing and HVAC systems.
- PVC and CPVC Tees – ideal for drainage, irrigation, or chemical pipelines.
- Ductile Iron Tee / Malleable Iron Tee – durable and ideal for heavy-duty use.
Applications
Tee fittings are widely used in:
- Medicine
- Water conservancy (e.g., water-saving irrigation)
- Energy (oil, natural gas, nuclear)
- Construction and infrastructure
- Chemical fluid handling systems
Manufacturing Methods of Tee Fittings
1. Hydraulic Bulging
This method injects fluid into a straight pipe under high pressure, using hydraulic force to expand the metal and form the tee shape. It allows one-step forming, increasing efficiency and wall thickness uniformity—ideal for stainless and alloy steel materials.
2. Hot Press Forming
A heated, oversized pipe is radially compressed and stretched to form the branch. This radial compensation process requires less forming pressure and is especially effective for thick-wall and large-diameter tees.
Main Manufacturing Standards
- China: GB/T12459, GB/T13401
- USA: ANSI/ASTM B16.3 / B16.14 / B16.39
- EU: EN10242
- UK: BS1256
- Germany: DIN2950
- Japan: JIS B2301
- India: IS 1879
- Brazil: NBR6943
- ISO: ISO49
Trusted Manufacturer – JIZHONG
As a reliable Chinese B2B pipe fittings manufacturer, JIZHONG has years of experience producing high-quality T pipe fittings that meet global standards. Our fittings are exported worldwide and trusted in various industries. Whether you need equal tees, reducing tees, or special-angled tees, JIZHONG offers premium products at competitive prices.
Contact us today at info@archpipe.com to get your best quote.









