Product Name: Boiler Feed & Water Wall Pipe
Introduction
Boiler Feed & Water Wall Pipes are seamless alloy or carbon–molybdenum steel tubes engineered to carry feedwater into boilers and form the radiant "water wall" lining inside furnace walls. Designed for high‐pressure, high‐temperature operation, these pipes maintain strength, corrosion resistance, and dimensional stability during rapid temperature cycling and continuous steam generation in utility and industrial boilers.
Key Specifications
| Specification | Details |
|---|---|
| Applicable Standards | ASTM A178 Gr. A/B, ASTM A192, EN 10216-2 P235GH/P265GH |
| Base Material | Carbon steel or low‐alloy Cr-Mo (e.g. 1.25Cr–0.5Mo) |
| Manufacture | Seamless hot-pierced or hot–finished |
| Outer Diameter (OD) | 19.05 – 60.3 mm |
| Wall Thickness | 2.0 – 12.7 mm |
| Length | 6 – 12 m (custom up to 18 m) |
| Tensile Strength | 415–550 MPa |
| Yield Strength | ≥ 245 MPa |
| Elongation (min) | ≥ 20 % |
| Temperature Rating | Up to 450 °C |
| Surface Finish | Mill scale; ID pickled and passivated for corrosion control |
Custom sizes, alloys, and heat‐treatment options available on request.
Features & Advantages
High-Temperature Performance: Cr-Mo alloy or carbon steel retains mechanical properties in feedwater service up to 450 °C.
Corrosion Resistance: ID pickling and passivation reduce flow‐assisted corrosion in wet feedwater lines; external mill scale protects during handling.
Smooth Internal Bore: Minimizes scale deposition and turbulence, improving heat transfer and reducing maintenance.
Dimensional Stability: Hot‐finishing and controlled cooling ensure straightness and uniform wall thickness for accurate tube‐sheet fit.
Rapid Replacement: Standardized lengths and seamless construction allow quick tube replacement during outages.
Applications
Boiler Feedwater Lines: Pipework from deaerator pumps to economizer inlets.
Water Wall Tubing: Vertical furnace tubes forming the radiant heating surface in water‐tube boilers.
Superheater Headers: Supply and return piping for superheater coil assemblies.
Drum Connections: Circulation pipes between steam drum and downcomers.
Auxiliary Systems: Feedwater sampling, condensate return, and boiler blowdown piping.
Packaging & Delivery
Bundling: Pipes banded in grade‐matched bundles with protective spacers.
End Protection: Plastic or steel caps to keep bores clean.
Surface Protection: Light oil coating for steel grades; shrink‐wrapped for export.
Lead Time: Standard sizes available within 15–20 days; custom lengths and alloys in 25–35 days.
Why Choose Our Boiler Pipes?
Specialized Production: Controlled hot‐piercing and mandrel finishing optimize grain structure and mechanical properties.
Stringent QA/QC: 100 % ultrasonic wall‐thickness testing, mechanical testing, and dimensional inspection per ASTM/EN.
Lifecycle Support: Engineering guidance on boiler tube metallurgy, corrosion control, and replacement scheduling within 12 hours.
Contact Us
For reliable, high‐performance Boiler Feed & Water Wall Pipes tailored to your boiler design and operating conditions, please contact our sales and technical team. We're committed to delivering durable, precision‐engineered tubing solutions for your steam generation needs.
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