Buttweld Tee
What is a Buttweld Tee?
A Buttweld Tee is a T-shaped fitting used to combine or divide fluid flow in a pipeline. It features three connection points—two in-line and one branch—welded to the pipes to ensure a permanent, high-strength, leak-free joint.
Buttweld tees are available in equal and reducing types, making them essential for fluid distribution or collection systems in industries such as petrochemical, power generation, shipbuilding, and chemical processing.
Key Features
- 90° Pipeline Branching – Enables smooth flow division at right angles.
- Multiple Configurations – Available in equal and reducing sizes.
- Welded Strength – Provides enhanced mechanical durability.
- Consistent Wall Thickness – Ensures uniform flow characteristics.
- Precision Manufactured – Meets ASME B16.9, DIN, and EN standards.
Types of Buttweld Tees
- Equal Tee
- Reducing Tee
- Lateral Tee (on request)
- Barred Tee (for piggable systems)
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Sizes | ½" to 48" (DN15 – DN1200) |
| Wall Thickness | SCH 10 to SCH XXS |
| Material Options | Carbon Steel, SS 304/316, Duplex, Alloy Steel |
| Standards | ASME B16.9, MSS-SP-43, DIN 2615 |
| Manufacturing | Hot Formed / Cold Formed / Seamless / Welded |
| Property | Typical Value |
|---|---|
| Tensile Strength | 485 – 750 MPa |
| Yield Strength | 205 – 450 MPa |
| Elongation | ≥ 20% |
| Hardness | 120 – 250 HB |
| Temperature Range | -46°C to +650°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.35 |
| Manganese (Mn) | 0.60 – 1.65 |
| Silicon (Si) | 0.15 – 0.80 |
| Chromium (Cr) | 16.0 – 20.0 |
| Nickel (Ni) | 8.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grades |
|---|---|
| ASTM | A234 WPB (CS), A403 WP304/316 (SS) |
| ASME | B16.9, B16.28 |
| MSS-SP | SP-43, SP-75 |
| DIN | 2615 |
| EN | EN 10253 |
| Tee Type | Size (inches) | Weight per 100 pcs (kg) |
|---|---|---|
| Equal Tee | 2" | 140 |
| Equal Tee | 4" | 210 |
| Reducing Tee | 6" x 4" | 240 |
Applications of Buttweld Tee
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the purpose of a reducing tee?
A reducing tee allows branching to a smaller diameter pipe, making it ideal for step-down flow systems.
Can buttweld tees be used in horizontal and vertical orientations?
Yes. They’re suitable for both horizontal and vertical pipeline branches.
Are your tees seamless or welded?
Both are available. We supply seamless tees for high-pressure use and welded tees for standard applications.
Do tees meet PED and NACE standards?
Yes. On request, we supply tees with PED, NACE MR0175, and 3.1/3.2 certifications.
