SA213 T22 High Temperature Economizer Steam Boiler Alloy Steel Flue Gas
Product Details
| Material Grade: | SA-213 T22 / T91 Alloy Steel | Header Fabrication: | Custom Forged Header |
|---|---|---|---|
| Tube Bending: | Hot Bending With Heat Treatment | Design Temperature: | Up To 600°C |
| Design Pressure: | Up To 31 MPa | Manufacturing Standard: | ASME SA-213 |
| Testing: | UT, RT, Hydrostatic Test | Application: | Ultra Supercritical Utility Boiler |
| Highlight |
SA213 economizer steam boiler,T22 economizer steam boiler,Alloy Steel flue gas economizer |
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Product Description
SA-213 T22 Alloy Steel High Temperature Economizer
Usage and Application
This high temperature economizer is engineered for ultra supercritical and large utility boilers where the feedwater is preheated under demanding pressure and temperature conditions. Located in the tail heating surface, it recovers flue gas heat and raises cycle efficiency while maintaining safe metal temperatures over long operating periods.
Manufacturing Capability
- Custom forged and machined headers with precise tube-hole drilling
- Hot bending of alloy steel tubes with post-bend heat treatment to restore metallurgy
- Qualified welding procedures and welders for SA-213 T22 and T91 alloy steels
- Spectrometric material verification and hardness mapping on finished coils
- Complete non-destructive testing, including ultrasonic and radiographic examination
Material Specification
SA-213 T22 (2.25Cr-1Mo) alloy steel provides excellent creep strength and oxidation resistance at elevated metal temperatures. For even higher operating temperatures, SA-213 T91 and other advanced alloys are available to suit ultra supercritical steam parameters.
Typical Parameter Specifications
| Specification | Technical Details |
|---|---|
| Tube Material | SA-213 T22 / T91 Alloy Steel |
| Header Fabrication | Custom Forged Header |
| Tube Bending | Hot Bending with Heat Treatment |
| Design Temperature | Up to 600°C |
| Design Pressure | Up to 31 MPa |
| Manufacturing Standard | ASME SA-213, ASME BPVC Section I |
| Testing | UT, RT, Hydrostatic Test |
| Target Application | Ultra Supercritical Utility Boilers |
About Boyu Heavy Industry
Boyu Heavy Industry is a premier global manufacturer of advanced power generation equipment and boiler pressure parts. With decades of thermal engineering expertise, an in-house R&D team and a fully equipped fabrication workshop, we deliver custom-engineered economizers that meet the rigorous commercial operation targets of international power projects.
OEM & Custom Manufacturing
We provide complete OEM and bespoke manufacturing. From material selection and engineering drawings to CNC tube bending, automatic welding, heat treatment and non-destructive testing, every step is controlled in our own plant. Custom tube diameters, wall thicknesses, fin types, header layouts and coil configurations are all available to match your project parameters.
Frequently Asked Questions (FAQ)
Why is T22 alloy steel used for high temperature economizers?
T22 (2.25Cr-1Mo) alloy steel offers excellent creep strength and oxidation resistance at elevated temperatures, making it reliable for high-pressure utility service.
Do you perform heat treatment after tube bending?
Yes. Hot-bent alloy tubes receive controlled post-bend heat treatment so the metallurgical structure and mechanical properties are fully restored.
Can you supply headers matched to our existing boiler?
Yes. Our forge and machine shop produces custom headers drilled to your exact tube pattern, ensuring a precise fit for new builds and retrofits.
Product Highlights
SA-213 T22 alloy steel high temperature economizer with custom forged headers and hot-bent tubes for ultra supercritical utility boilers.
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