Boiler Tubes
Water wall, superheater and reheater tubing
Stock statusProject supply
Typical lead timeStandard sizes 2 - 4 weeks; alloy grades 6 - 10 weeks mill indent
Boiler tubing for water wall, economiser, superheater and reheater service, supplied to ASTM A192, A210, A213 and A335 in carbon, Cr-Mo and austenitic grades. Tube is selected against the metal temperature and steam-side oxidation rather than the design pressure alone, with hardness, grain size and PWHT records where the grade demands them.
- Grade matched to the design metal temperature, not just the pressure
- Carbon, Cr-Mo, Grade 91 / 92 and austenitic grades from one source
- Hardness and heat treatment records on the creep-strength-enhanced grades
- Matching A335 header pipe, fittings and flanges supplied together
Types & configurations
| Type | Specification |
|---|---|
| Carbon steel boiler tubes | ASTM A192 / A210 Gr A1 and C1 for water wall and economiser sections |
| Cr-Mo alloy tubes | ASTM A213 T11 / T12 / T22 for superheater and reheater duty |
| Grade 91 / 92 tubes | ASTM A213 T91 / T92 for supercritical steam with hardness and PWHT control |
| Austenitic superheater tubes | ASTM A213 TP304H / TP321H / TP347H and Super 304H for the hottest passes |
| Nickel alloy sections | Alloy 800HT and 617 for advanced ultra-supercritical headers and pendants |
| Seamless alloy pipe | ASTM A335 P11 / P22 / P91 for main steam, hot reheat and header piping |
Specifications
| Property | Value |
|---|---|
| Size range | 19 mm to 139.7 mm OD, 2 mm to 12 mm wall, lengths to 24 m |
| Condition | Normalised and tempered or solution annealed depending on grade |
| Testing | Hydrostatic, ultrasonic or eddy current, flattening, flaring and hardness survey |
| Grade 91 control | Hardness after PWHT, normalising and tempering temperatures recorded on the certificate |
| Documentation | EN 10204 3.1 or 3.2, PMI, heat traceability and inspection release notes |
Typical applications
Water wall and economiser sections
Superheater and reheater pendants
Main steam and hot reheat piping
Waste heat recovery and HRSG sections
Waste-to-energy and biomass boilers
Fired heater coils in refineries
Frequently asked
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