Description
Fireclay bricks (PN Series) are traditional clay-bonded refractory products manufactured through pressing and high-temperature firing. These bricks offer reliable thermal stability and resistance to thermal shock in moderate-temperature zones of industrial furnaces. The PN-1, PN-2, and PN-3 grades provide varying levels of refractoriness and mechanical strength to suit different application requirements. Widely adopted in reheating furnaces, heat treatment furnaces, and various industrial heating equipment, fireclay bricks deliver cost-effective performance where operating temperatures and chemical exposure fall within standard parameters. The PN Series serves as a proven choice for general furnace linings and non-critical high-temperature zones.
Key Features
- Clay-bonded composition provides reliable refractoriness and consistent performance at elevated temperatures
- Multiple grade options (PN-1, PN-2, PN-3) accommodate varying thermal and mechanical demands
- Good thermal shock resistance suitable for intermittent heating and cooling cycles
- Cost-effective solution for moderate-temperature furnace zones and secondary lining applications
- Established manufacturing process ensures product consistency and predictable service life
Application
- Reheating furnaces and pusher furnaces in steel rolling mills
- Heat treatment furnaces for metal processing applications
- Walking-beam furnaces and batch-type annealing furnaces
- Industrial boiler settings and chimney linings
- General-purpose kiln furniture and furnace hearth constructions
Technical Specifications
Physical and chemical Performance Indicators of Fireclay Bricks
| Grade | PN-1 | PN-2 | PN-3 |
| Apparent Porosity (%) | ≤24 | ≤26 | ≤28 |
| Cold Crushing Strength (MPa) | 30 | 25 | 20 |
| 0.2MPa RUL T0.6 (°C) | 1300 | 1250 | 1200 |
| Permanent Linear Change (% at 1350°C×2h) | -0.5~+0.1 | -0.5~+0.2 | – |
| Packaging | Wooden pallet | Wooden pallet | Wooden pallet |
