Product Overview

No. 24 Malleable Cast Iron Lap-Type Grate Bar is a core heavy-duty boiler grate component specially used for industrial solid fuel combustion systems. As a mainstream model in the lap-type grate bar series, this malleable cast iron grate bar adopts a unique lap splicing structure, enabling seamless assembly, ensuring stable operation of the entire grate system, and effectively preventing material leakage and air leakage during boiler operation.

Designed for harsh working conditions with long-term high temperature, high load and severe wear, the product features excellent structural toughness, thermal stability and wear resistance. It is widely applicable to coal-fired boilers, biomass boilers, industrial incinerators and thermal power combustion equipment, serving as a highly reliable wearable accessory for supporting equipment.

Our company provides one-stop full-customization solutions for No.24 model and full-series industrial grate bars. With more than ten years of professional casting and processing experience, we break the limitations of standard products. We support full-dimensional customization covering material grade, structural size, surface treatment and performance parameters, to adapt to various global industrial combustion scenarios and non-standard equipment application requirements.

Core Product Features & Technical Advantages

Our No.24 malleable cast iron lap-type grate bar is manufactured via precision sand casting and secondary finishing processes, with every technical indicator complying with international industrial boiler component standards. It outperforms ordinary grate bars in durability, assembly compatibility, and operational stability, with verifiable industry-leading advantages:

Premium Malleable Cast Iron Substrate

Adopts high-purity malleable cast iron raw materials, featuring excellent ductility, impact resistance, and anti-fracture performance. Unlike brittle gray cast iron grate bars, it can withstand frequent temperature changes and mechanical impact during boiler operation, effectively preventing cracking and deformation.

Optimized Lap-Type Splicing Structure

The exclusive lap joint design ensures tight fitting between adjacent grate bars. It improves the overall rigidity of the furnace grate, reduces running noise, and controls the gap accuracy to prevent small-particle fuel leakage while ensuring uniform air permeability, greatly improving combustion efficiency.

High Temperature & Abrasion Resistance

After high-temperature annealing and hardening treatment, the finished grate bar maintains stable physical properties under 800℃-1200℃ long-term high-temperature working conditions. It resists oxidation, high-temperature corrosion, and material abrasion, extending the service life of boiler grate components significantly.

High Dimensional Accuracy & Easy Installation

Strict CNC finishing and size calibration ensure consistent parameters of each No.24 grate bar. Standardized lap interface realizes quick assembly and disassembly, reducing equipment maintenance time and labor costs for industrial users.

Anti-Deformation & Long Service Life

The integral thickened structural design optimizes force bearing, avoiding bending and deformation under long-term heavy load. The service life is 30% longer than ordinary cast iron grate bars, lowering equipment replacement frequency and operating costs.

Full-Range Customization Service

Different from most suppliers that only provide standard No.24 malleable cast iron lap-type grate bars, Juyu Long Special Steel focuses on all-round customized boiler grate bar production, covering full material specifications, product types, size parameters, and performance customization. We support personalized OEM & ODM services for global industrial clients to meet differentiated equipment and scenario demands.

Multi-Material Customization

We independently select and process multiple high-performance casting materials for grate bars, adapting to different temperature resistance, corrosion resistance, and wear resistance requirements:

Malleable Cast Iron: Standard configuration for No.24 lap-type grate bars, balancing toughness and wear resistance, suitable for conventional coal-fired and biomass boilers.
Grey Cast Iron: High cost-performance, good thermal conductivity, applicable for low and medium-temperature industrial combustion equipment.
Ductile Iron: Ultra-high strength and toughness, anti-fatigue, suitable for high-load and frequent start-stop boiler systems.
Heat-Resistant Cast Steel: High-temperature resistant up to 1300℃+, anti-oxidation, for high-temperature industrial incinerators and power station boilers.
Alloy Steel: Custom chromium-manganese alloy, high-chromium alloy materials, super wear-resistant and corrosion-resistant, for harsh working conditions with high abrasion and chemical corrosion.

Full Product Type Customization

Based on the standard No.24 lap-type grate bar, we customize all series of industrial furnace grate products to cover full industry demands:

Structural Customization: Lap-type, chain-type, reciprocating, fixed, flip-type, and cassette-type grate bars; customized single-row, double-row, and multi-row splicing structures.
Model Customization: Full series of No.12-No.36 lap-type grate bars, supporting non-standard size adjustment of hole spacing, lap width, thickness, and length.
Scenario Customization: Special grate bars for coal-fired boilers, biomass boilers, garbage incinerators, industrial furnaces, thermal power plants, and heating equipment.
Performance Customization: Customized high-temperature resistant, super wear-resistant, anti-corrosion, and anti-deformation enhanced versions according to user working conditions.

Size & Process Customization

We support full-size non-standard customization: arbitrary adjustment of length, width, thickness, assembly hole position, lap gap, and radian. Meanwhile, we provide customized processes such as high-temperature annealing, surface polishing, rust prevention, and hardening treatment to ensure product adaptation to extreme working environments. All customized products comply with ISO, DIN, BS, and other international standards, meeting global market access requirements.

Wide Application Scenarios

The No.24 Malleable Cast Iron Lap-Type Grate Bar and our customized grate bar products are widely applicable to multiple industrial fields, with strong product versatility and scene adaptability:

Industrial coal-fired boilers, biomass-fired boilers, and steam boilers
Municipal solid waste incinerators and industrial waste incineration equipment
Thermal power plants, heating furnaces, and industrial kiln combustion systems
Chemical, metallurgical, textile, and food factory special combustion equipment
All mechanical equipment requiring stable solid fuel combustion and ventilation filtration