BOILER WATER WALL PANELS

A boiler GA drawing provides the fastest path to a quotation. If a drawing is unavailable, we work from the following parameters:

• • Boiler type and fuel (CFB, biomass, coal, gas, etc.)
• • Design pressure (MAWP) and operating temperature
• • Furnace dimensions — width, depth, height
• • Tube OD, wall thickness, and pitch (if known)
• • Wall position(s) required — side / front / rear / floor / roof
• • Applicable design code (ASME Section I / GB/T 16507 / EN 12952)
• • New build or replacement — if replacement, extent of section required
• • Required delivery date or outage window

Partial replacement is frequently possible and more cost-effective for localised damage. We design replacement sections in three modes:

• • Section replacement — a defined height or zone of the wall, with transition welds to the retained existing panels above and below
• • Full wall panel — one or more complete panels from inlet header to outlet header
• • Full enclosure — all furnace wall panels supplied as a coordinated package

For section replacement, send us the extent of damage and existing panel interface dimensions — we'll confirm whether a section or full panel replacement is the more practical approach.

Material selection follows operating pressure, design wall temperature, and fuel ash corrosivity:

• • SA-210 A1 — standard grade for most industrial and biomass boilers, pressure up to ~10 MPa, wall temperature up to ~400°C
• • SA-210 C — higher-strength carbon steel for medium-to-high pressure boilers where wall thickness needs to be minimised
• • SA-213 T11 / T22 — low-alloy Cr-Mo grades for high-pressure or high metal temperature service, and where alkali-induced corrosion is a concern

For biomass and high-alkali fuels, fireside corrosion rate can override pure temperature criteria. Share your operating history and we'll confirm the recommendation.

Standard documentation package included with every delivery:

• • Tube and membrane bar EN 10204 3.1 Mill Test Certificates
• • Welding Procedure Specifications (WPS) and Procedure Qualification Records (PQR)
• • Welder qualification records
• • NDT reports — visual inspection records, PT/MT as required by code
• • Dimensional inspection certificate
• • Pressure test certificate (where applicable)
• • As-built drawing

Third-party witness inspection (SGS, BV, TÜV) can be arranged on request.

Lead time is measured from drawing approval. Typical ranges:

• • Section replacement (single wall position, carbon steel): 6–10 weeks
• • Single wall panel set (side or front/rear, standard geometry): 8–14 weeks
• • Full furnace enclosure (all positions, including floor and roof): 14–20 weeks

For planned outages, share your shutdown window at the enquiry stage — we build the production schedule backward from your required delivery date. Expedited assessment available for emergency tube failures.

Yes — ORL Power manufactures all major boiler pressure parts in the same facility. Common combined packages:

• • Water Walls + Steam Drum (natural circulation boiler package)
• • Water Walls + Superheater + Economizer (full convection pass)
• • Full pressure-parts package including Headers and Air Preheater

Package supply means a single technical interface, one inspection visit, consolidated shipping, and one documentation package — significantly reducing coordination workload for EPC contractors.