15CrMoG Alloy Steel Superheater Membrane Wall Panel with φ42×4mm GB5310 Tube for 500°C Industrial Boiler Applications
The 15CrMoG Alloy Steel Superheater Membrane Wall Panel is manufactured with φ42*4mm chromium-molybdenum alloy tubes to GB5310 standard. This versatile panel provides reliable performance in superheater wall sections of industrial boilers operating at temperatures up to 500°C, offering an excellent balance of performance and cost for mid-range boiler applications.
Fabricated from 15CrMoG seamless alloy steel tubes per GB5310, containing approximately 1.0% Chromium and 0.5% Molybdenum. This Chinese-standard Cr-Mo steel is the direct equivalent to SA213 T12, providing improved elevated-temperature properties over carbon steel while maintaining good weldability. Membrane bars are produced from 15CrMo plate for consistent metallurgical properties across the entire panel.
- Mid-Range Temperature Performance: 15CrMoG alloy steel reliably operates at continuous service temperatures up to 500°C, ideal for superheater and reheater enclosure walls
- Improved Oxidation Resistance: Chromium content provides moderate oxidation protection in high-temperature flue gas environments, extending service life compared to carbon steel panels
- Good Weldability: Lower alloy content compared to T22/T91 grades simplifies welding procedures and reduces preheat/PWHT requirements, lowering fabrication costs
- GB Standard Certified: Full compliance with GB5310 and GB/T 9222 Chinese boiler pressure part standards, simplifying regulatory approval for Asian projects
- Versatile Application: Suitable for both new-build and replacement panel projects across multiple boiler types and capacities
Material verification per GB5310 including chemical analysis, tensile testing, and flattening tests. Visual and dimensional inspection of all panels. Hydrostatic testing and NDE per customer specification. Mill test certificates provided with each shipment.
| Parameter | Specification |
|---|---|
| Tube OD | φ42mm |
| Tube Wall Thickness | 4mm |
| Tube Material | 15CrMoG (GB5310) |
| Membrane Bar Material | 15CrMo Plate |
| Tube Pitch | 65-85mm |
| Welding Method | HFRW + TIG |
| Max Service Temperature | 500°C |
Superheater and reheater enclosure walls in industrial coal-fired and biomass-fired boilers (10-220 t/h capacity range). Also suitable for medium-temperature process steam boiler furnace sections in petrochemical, textile, and food processing industries.
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