Boiler Bottom Plate | CFB Boiler Bottom Steel Plate | Power & Petrochemical Castings

Boiler Bottom Plate

High Pressure & High Temperature Resistant Boiler Base Plate | Compliant with US / EU / Japan International Standards | Custom Industrial Boiler Structural Steel Plate

1. Product Overview

Boiler Bottom Plate, also named boiler base plate, boiler air distribution bottom plate or boiler pressure bottom plate, is a critical load-bearing and pressure-resistant structural component installed at the bottom chamber of CFB boilers, CFBC boilers, thermal power boilers and petrochemical fluidized bed boilers.

Working under long-term high pressure, high temperature, impact load and abrasive flue gas environment, this heavy-duty steel plate undertakes overall boiler bottom load support, fixes boiler bubbling air caps, air nozzles and air distribution systems, isolates furnace inner high-temperature combustion chamber and external air duct, and prevents air leakage, pressure loss and structural deformation of boiler equipment.

We supply full-series boiler bottom plates complying with American ASTM/ASME, European EN and Japanese JIS industrial standards. All steel plates adopt killed steel smelting and normalized heat treatment, featuring stable mechanical performance, excellent weldability and long service life. Suitable for global power plant, petrochemical engineering and industrial boiler renovation & replacement projects.

2. Core Product Features & Advantages

• Full International Standard Compliance: One-stop supply for US ASTM/ASME, EU EN, JIS Japanese standard boiler bottom plates, perfectly matching global local engineering inspection and third-party certification requirements.

• Extreme Pressure & Temperature Resistance: Withstand long-term working pressure up to 16MPa and continuous working temperature up to 550℃, no bending, no cracking and no structural fatigue under long-period boiler operation.

• Outstanding Weldability & Machinability: Low carbon fine-grain steel material, easy for on-site cutting, drilling, welding and installation; no welding crack during boiler on-site assembly.

• Abrasion & Corrosion Resistance: Resist impact wear of bed material ash and corrosive flue gas inside boiler furnace, adapt to harsh working conditions of coal-fired power plants and petrochemical high-sulfur flue gas environments.

• Precision Custom Processing: Customized cutting, drilling holes for air caps, grooving and forming according to customer drawings; matched perfectly with boiler bubbling air cap and air distribution system.

• Complete Third-Party Certificates: Provide MTC material test certificate, SGS inspection report, factory acceptance test report, meeting international project bidding and customs clearance requirements.

3. International Standard & Equivalent Material Comparison Table (ASTM / EN / JIS)

We sorted out mainstream matched grades for American Standard, European Standard and Japanese Standard boiler bottom plates, covering common low-medium pressure and high-pressure boiler working conditions for quick material selection by global buyers.

4. General Technical Parameters

5. Application Scope

• Thermal Power Plants: Bottom bearing plate for circulating fluidized bed CFB boilers, coal-fired power generation boilers

• Petrochemical Industry: Bottom pressure plate for chemical fluidized bed furnaces, oil refinery heating boilers

• Waste & Biomass Power Plant: Garbage incineration boiler, biomass combustion boiler bottom structural plate

• Global Boiler Project Renovation: Replacement bottom plate matching American, European, Japanese standard old boiler equipment

6. Production & Quality Control Process

Raw material incoming inspection → Standard steel plate cutting → CNC precision drilling (for air cap installation) → Edge beveling & finishing → Heat treatment → Dimension inspection per ASTM/EN/JIS standard → Ultrasonic flaw detection → Material composition retest → Export packaging → Shipment

7. Buyer FAQ (Google SEO & Common Inquiry)

Q1: What is the difference between ASTM, EN and JIS boiler bottom plate?

The core difference lies in manufacturing tolerance, inspection standard and material traceability. We provide fully matched equivalent grades for three standards, with consistent actual service performance. You can choose corresponding plates according to your project local certification requirements.

Q2: Can you pre-drill holes matching boiler bubbling air cap?

Yes. We support integrated processing: pre-drill standard mounting holes for our matched boiler bubbling air caps, ensuring perfect on-site assembly without secondary processing.

Q3: Can you provide official material test certificate for customs clearance?

Absolutely. Each batch of boiler bottom plates will be attached with official MTC material test report, ultrasonic test report and factory certification, supporting customs clearance and third-party project inspection worldwide.

Q4: What are your trade terms for international order?

We support FOB, CIF, CFR, DDP shipping terms. Payment: T/T, L/C at sight. Neutral export packaging is available for overseas distributors.

8. Related Power & Petrochemical Boiler Products

• Boiler Bubbling Air Cap

• Boiler Air Distribution Plate

• CFB Boiler Grate Bars

• High Temperature Resistant Boiler Castings

• Boiler Pressure Vessel Steel Plate

Get Free Quote

Send us your required standard (ASTM/EN/JIS), thickness, dimension drawing and working pressure parameter. Our engineering team will send you detailed quotation and material recommendation within 24 hours for global power and petrochemical boiler buyers.