ASTM A234 WP11 Alloy Steel Butt Weld Tee
Product Introduction
YUHONG supplies ASTM A234 WP11 butt weld tees for high-temperature and high-pressure piping systems used across the power generation, petrochemical, refinery, and industrial processing sectors. Manufactured in accordance with ASTM A234 and ASME B16.9 standards, these alloy steel fittings are designed to provide reliable branch connections while maintaining the mechanical strength and thermal stability required for demanding operating conditions.
Our supply range includes equal and reducing tees in various sizes, wall thicknesses, and end preparations to accommodate diverse piping configurations. Each fitting is sourced under strict quality control and is available with complete material traceability, inspection reports, and project documentation to meet the requirements of EPC contractors, equipment manufacturers, and industrial distributors.
With extensive experience in supplying alloy steel piping components for international projects, YUHONG provides flexible sourcing solutions, consistent product quality, and responsive technical support to help customers meet project schedules and specification requirements.
Product Specifications
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Item
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Description
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Product
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Butt Weld Tee
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Material Grade
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ASTM A234 WP11
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Standard
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ASTM A234 / ASME B16.9
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Type
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Equal Tee / Reducing Tee
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Size
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1/2"–48" (DN15–DN1200)
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Wall Thickness
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SCH 10–SCH XXS
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Manufacturing
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Seamless / Welded
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End Connection
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Butt Weld
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Heat Treatment
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Normalized & Tempered (as applicable)
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Surface
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Black Painted, Pickled, Shot Blasted or Anti-rust Oil
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Inspection
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PMI, UT, Dimensional Inspection, Visual Inspection
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Certificate
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EN10204 3.1
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Key Features
- 1. High Temperature Strength
The chromium-molybdenum alloy composition provides reliable strength and dimensional stability in elevated-temperature piping systems.
- 2. Excellent Creep Resistance
WP11 alloy steel maintains long-term mechanical performance under continuous high-temperature operation, making it suitable for steam and process piping.
- 3. Reliable Weldability
Manufactured to ASME B16.9 dimensions, butt weld tees provide full-penetration welded joints with smooth flow transitions and reduced pressure loss.
- 4. Long Service Life
Suitable heat treatment and controlled chemical composition help improve resistance to oxidation and thermal fatigue in demanding industrial environments.
Quality Inspection
Every ASTM A234 WP11 butt weld tee is inspected according to applicable project specifications, including:
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Chemical Composition Analysis
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Mechanical Property Testing
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Positive Material Identification (PMI)
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Dimensional Inspection
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Visual Examination
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Ultrasonic Testing (when required)
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Hydrostatic Test (project-specific)
Typical Applications
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High-Pressure Steam Piping Systems – Used for branch connections in main steam and hot reheat pipelines.
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Boiler & Superheater Systems – Suitable for high-temperature piping in boilers, superheaters, and reheaters.
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Petrochemical Process Piping – Applied in refinery and petrochemical plants handling high-temperature process fluids.
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Power Generation Equipment – Widely used in thermal power plants and combined-cycle power stations.
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Pressure Piping Networks – Ideal for industrial piping systems requiring reliable welded branch connections under elevated temperatures.
FAQ
ASTM A234 WP11 is a chromium-molybdenum alloy steel grade for butt welding fittings used in moderate and high-temperature pressure piping systems.
- Where are WP11 butt weld tees commonly used?
WP11 tees are widely installed in steam pipelines, boiler systems, refineries, petrochemical plants, power stations, and other high-temperature industrial piping networks.
- What standards apply to WP11 tees?
Material requirements follow ASTM A234, while dimensions are typically manufactured in accordance with ASME B16.9.
Key words
- ASTM A234 WP11 Tee
- WP11 Butt Weld Tee
- Alloy Steel Tee
- ASME B16.9 Tee
- Chrome Moly Tee
- Steam Pipeline Tee
- Boiler Piping Tee
- Process Piping Tee
- Refinery Piping Fitting
- Pressure Vessel Piping
- Main Steam Header Fitting
- Power Plant Piping Components
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