Core Specimen Test Coverage

The integrated furnace supports full-scale fire resistance evaluation for all common building and industrial elements:

• Vertical specimens: Fire walls, partitions, fire doors, shutters, columns, cable fire barriers, penetration seals
• Horizontal specimens: Load-bearing floors, ceiling slabs, beams, ventilation ducts, deck panels
• Special test objects: Tunnel linings, structural steel fire protection assemblies, marine fire partitions

Global Standard Full Compliance

The NH-XW furnace is fully engineered to satisfy worldwide fire resistance test codes, covering European, American, Australian, Indian and international ISO standards:

1. ISO Series: ISO 834 Part 1, ISO 3008-1
2. European EN & BS: EN 1363 Part 1/2, EN 1364 Part 2, BS 476 Part 20–24
3. North American ASTM & UL: ASTM E119, UL 263, UL 1709, UL 10 (B-C)
4. Regional Standards: AS 1530-4, IS 17518-2

Supported Standard Fire Time-Temperature Curves

The intelligent combustion control system can automatically execute all mainstream fire profiles and user-defined custom curves:

• Cellulosic Curve (ISO 834 / ASTM E119) – General building fire
• Hydrocarbon & Modified Hydrocarbon Curve (UL 1709 / EN 1363-2)
• RWS Tunnel Fire Curve
• RABT-ZTV Curve
• IMO Marine Fire Curve
• User-programmable custom temperature curves

Oversized Customizable Test Openings

The combined furnace reserves large unobstructed mounting openings to accommodate full-size real construction assemblies, with customizable dimensions per client requirements:

• Vertical test port: Minimum 4 m (Height) × 4 m (Width), expandable
• Horizontal test port: Minimum 5 m (Length) × 4 m (Width), expandable

The whole unit adopts heavy-duty carbon steel frame lined with high-grade refractory bricks and zirconium refractory fibre, long-term stable operation up to 1400°C, peak transient temperature reaching 1350°C to meet extreme tunnel fire test demands.

Key Hardware Technical Advantages

1. Heavy-Duty Hydraulic Loading System

Equipped multi-group hydraulic jacks with maximum load capacity up to 500 tons, load control accuracy ±2.5%. Supports simultaneous load application on vertical and horizontal specimens, separately adjustable loading points, perfect for testing load-bearing walls, floors and beams under fire + mechanical stress. Complete tunnel test end support accessories are optional.

2. Safe LPG Combustion System

Multi-side forced-air post-mix LPG burners with automatic ignition and flame safety monitoring, fully compliant with EN 746-2 safety standards. Fail-safe gas train design automatically cuts gas supply on flame loss, gas leakage or abnormal air supply. Variable-speed combustion air blower realizes gradual heating/cooling to avoid thermal shock to refractory lining and samples. Multiple high-temperature observation windows allow real-time visual inspection of specimen burning state.

3. Precise Closed-Loop Environment Control

• Chamber pressure closed-loop regulation range: ±50 Pa
• Multiple high-precision pressure transmitters for continuous real-time monitoring
• High-grade B/R/S platinum thermocouples (max 1650°C) for ultra-high temperature RWS & hydrocarbon curve testing
• Complete sensor suite: plate thermocouples, unexposed surface thermocouples, displacement transducers, heat flux radiometers, load cells, gap gauges

4. 5+ Hours Continuous Stable Operation

The furnace supports uninterrupted 5+ hour daily testing cycles. Full emergency protection system triggers automatic shutdown for over-temperature, over-pressure, gas leakage, flame failure and equipment faults to maximize operator and equipment safety.

5. PLC + SCADA Intelligent Data Platform

The core control system adopts industrial PLC paired with dedicated SCADA monitoring software:

• One-click automatic operation of standard fire curves, manual mode switchable
• Real-time display of furnace temperature, chamber pressure, burner status, test duration, load value and specimen deflection
• Automatic storage of all test raw data with power-off protection
• Export complete audit-ready test reports for certification submission
• Supports real-time heat flux, deformation and multi-point temperature recording

6. Complete Flue Gas Exhaust Treatment

Comes with refractory-lined exhaust duct and 15 m high chimney matched with induced draft fan, efficiently extracting high-temperature smoke and combustion waste gas during testing for lab environmental safety.

Wide Target Customer Groups

1. Third-party ISO 17025 fire certification laboratories
2. Construction material & fire door manufacturers
3. Tunnel safety product R&D and testing factories
4. Structural steel fire protection material enterprises
5. Marine & ship fire barrier testing institutions
6. University fire safety research institutes
7. Global importers of fire testing equipment

About Shenyang Baoruitong Automation Equipment Co., Ltd.

Shenyang Baoruitong Automation Equipment Co., Ltd. specializes in R&D, production and customized manufacturing of full-series fire safety test equipment, including full-scale fire resistance furnaces, cable flame testers, smoke density chambers, oxygen index instruments and cone calorimeters. All equipment strictly complies with global ISO, ASTM, UL, EN, AS national standards, with one-stop services including factory calibration, on-site installation, technical training and after-sales maintenance for domestic and overseas labs.

Customers can download detailed technical datasheets, custom layout drawings and request competitive quotations via the official website online inquiry channel.