The SA213 T22 Alloy Steel Boiler Membrane Wall Panel features heavy-wall φ51×6mm tubes in 2.25Cr-1Mo alloy steel, purpose-built for the extreme thermal and pressure conditions of supercritical and ultra-supercritical power plant furnace walls. This premium-grade panel delivers unmatched creep strength and hydrogen attack resistance.

Fabricated from SA213 T22 seamless alloy steel tubes containing 2.25% Chromium and 1% Molybdenum. This higher chromium content significantly enhances oxidation resistance, making T22 the material of choice for high-temperature furnace wall applications. Membrane bars are produced from 12Cr1MoV alloy steel for optimal weld compatibility. All panel-to-panel joints are prepared with pre-machined weld bevels for rapid field assembly.

• Premium Creep Strength: 2.25Cr-1Mo composition delivers exceptional creep rupture strength at temperatures up to 600°C, critical for supercritical boiler furnace walls
• Hydrogen Attack Resistance: Higher chromium content provides superior resistance to high-temperature hydrogen attack (HTHA) per API RP 941 Nelson curves
• Heavy Wall Design: φ51×6mm tube dimensions provide extended service life with built-in corrosion allowance for demanding coal-fired environments
• Thermal Fatigue Resistant: Alloy composition minimizes thermal expansion stresses during boiler startup and shutdown cycles
• Precision Manufacturing: CNC tube bending and laser-aligned welding fixtures ensure dimensional accuracy within ±2mm across full panel length

Positive Material Identification (PMI) on 100% of alloy components. Ultrasonic and radiographic inspection of all pressure-retaining welds. Hydrostatic testing, dimensional verification, and post-weld heat treatment documentation included. EN 10204 3.1 certification standard.