ASTM A234 WP11 Equal Tee (Straight Tee) – ASME B16.9 Alloy Steel Pipe Fittings
ASTM A234 WP11 Equal Tee (Straight Tee) is a high-quality alloy steel butt weld pipe fitting designed to connect three pipes of the same diameter at a 90° angle. Manufactured in accordance with ASME B16.9, WP11 tees are widely used in high-temperature and high-pressure piping systems.
With excellent heat resistance, creep strength, and corrosion resistance, WP11 equal tees are ideal for power plants, refineries, petrochemical industries, and boiler systems.
Product Overview
- Product Type: Equal Tee / Straight Tee
- Material: ASTM / ASME A234 WP11 Alloy Steel
- Standard: ASME B16.9
- Size Range: 1/2″ – 48″ (DN15–DN1200)
- Wall Thickness: SCH 10, 20, 40, STD, XS, XXS
- Manufacturing: Seamless / Welded
- End Type: Butt Weld (BW)
- Heat Treatment: Normalized & Tempered
What is an Equal Tee (Straight Tee)?
An equal tee (also called straight tee) has three outlets of the same diameter, allowing uniform flow distribution.
Key Features:
- Equal inlet and branch size
- 90° branch connection
- Used in main pipeline branching systems
Commonly applied where flow rate remains consistent across all directions.
Chemical Composition (ASTM A234 WP11)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Silicon (Si) | 0.50 – 1.00 |
| Chromium (Cr) | 1.00 – 1.50 |
| Molybdenum (Mo) | 0.44 – 0.65 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
👉 Chromium and molybdenum improve high-temperature strength and oxidation resistance.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 20% |
👉 Designed for high-pressure and elevated temperature service.
Advantages of WP11 Equal Tee
- Excellent high-temperature resistance
- Strong creep resistance for long-term service
- Good corrosion and oxidation resistance
- Reliable mechanical strength under pressure
- Suitable for critical industrial applications
Inspection & Testing
- PMI (Positive Material Identification)
- UT / RT / MT / PT (NDT)
- Mechanical testing
- Dimensional inspection
- Heat treatment records
- Third-party inspection (SGS, BV, TUV)
Applications
- Power Plants (Boiler & Steam Lines)
- Oil & Gas Refineries
- Petrochemical Processing
- High-Temperature Pipelines
- Heat Exchanger Systems
- Industrial Pressure Systems
Global Supply & Target Markets
We export ASTM A234 WP11 Equal Tees worldwide:
- 🇺🇸 USA – power plant and refinery projects
- 🇨🇦 Canada – energy and steam systems
- 🇦🇪 Middle East – Saudi Aramco & ADNOC projects
- 🇪🇺 Europe – industrial EPC contractors
- 🇯🇵 Japan / 🇰🇷 South Korea heavy industry
- 🇮🇳 India & Southeast Asia infrastructure
Reliable supplier for EPC contractors, distributors, and stockists.
Packaging & Documentation
- Seaworthy wooden cases / pallets
- EN 10204 3.1 / 3.2 MTC
- Heat number traceability
- Third-party inspection reports
Ordering Information (Example)
- Product: Equal Tee (Straight Tee)
- Material: ASTM A234 WP11
- Size: 10″ × 10″ × 10″
- Thickness: SCH 80
- Standard: ASME B16.9
- Ends: Beveled
ASTM A234 WP11 Tee ASME B16.9
FAQ
Q1: What is ASTM A234 WP11 equal tee used for?
A: It is used to connect three pipes of equal diameter in high-temperature and high-pressure piping systems.
Q2: What makes WP11 different from WPB?
A: WP11 is an alloy steel with chromium and molybdenum, offering better high-temperature strength compared to carbon steel WPB.
Q3: Is WP11 suitable for power plants?
A: Yes, WP11 is widely used in boiler systems, steam pipelines, and power generation applications.
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