The GTL-50 Steel Structure Fire Retardant Coating Sample Test Furnace is a dedicated laboratory testing instrument developed strictly in accordance with ISO 834, BS 476 (Parts 20/21), EN 13381-4/8, ASTM E119, UL 263, and GB 14907-2018 standards. It is engineered to evaluate the fire resistance rating, thermal insulation efficiency, and flame retardancy of fireproof coatings applied to steel plates and structural components.
Featuring a compact 1.6m × 1.6m × 1.6m diesel-fueled heating chamber, dual touch screen and wireless PC control, real-time closed-loop temperature and pressure curve tracking (up to 1210°C / 360 min), and automatic thermocouple fault elimination, this high-precision Fire-Retardant Coating Thermal Insulation Efficiency Test Furnace delivers authoritative test data for paint manufacturers, third-party fire testing laboratories, marine classification bodies, and construction material quality supervision bureaus.
Steel Structure Fire Retardant Coating Sample Test Furnace Compliance & Standards
This fire-retardant coating sample test furnace enables certified testing facilities to assess coating performance across global structural fire protection frameworks:
| Standard Code |
Standard Title & Scope |
Testing Application |
| ISO 834 / BS 476-20/21 |
Fire-resistance tests — Elements of building construction & loadbearing structural elements |
International benchmark for standard time-temperature fire curve compliance and coating testing |
| EN 13381-8 / EN 13381-4 |
Test methods for determining the contribution to the fire resistance of structural members (Reactive & Passive protection to steel) |
European standard for intumescent (reactive) and thick non-intumescent (passive) steel fireproof coatings |
| ASTM E119 / UL 263 |
Standard Test Methods for Fire Tests of Building Construction and Materials |
North American fire resistance and thermal insulation evaluations for structural steel coatings |
| GB 14907-2018 & GB/T 9978-2008 |
Fire-retardant coating for steel structures & Fire-resistance tests for building elements |
Mandatory Chinese national standard for thermal insulation efficiency & fire resistance limit testing |
| IMO FTP Code Part 11 |
International Code for Application of Fire Test Procedures — Structural Fire Protection |
Fire protection coating evaluations for marine steel structures, deck bulkheads, and offshore platforms |
Technological Features of GTL-50 Fire-Retardant Coating Test Furnace
- Dual Touch Screen & Wireless PC Multi-Station Linkage: Operates via an intuitive standalone onboard touch screen or wireless PC software. Supports multi-furnace synchronization from a single computer terminal and allows centralized data monitoring across network workstations.
- High-Efficiency Diesel Spray Burner & Standard Curve Simulation: Equipped with an automatic diesel combustion system (using 0# / -10# diesel fuel) capable of following standard time-temperature curves up to 1210°C over a 360-minute duration (e.g., 60 min @ 925°C, 180 min @ 1115°C, 360 min @ 1210°C).
- Automated Closed-Loop Pressure & Temperature Regulation: Maintains a constant furnace pressure of 20 ± 3 Pa (0–100 Pa measurement range) and a tight unexposed surface temperature tolerance within ±4°C, vastly surpassing national standard precision thresholds.
- Intelligent Thermocouple Fault Elimination & Flame Protection: Built-in self-diagnostics automatically detect, isolate, and shield damaged thermocouple signals during continuous heating. Features automatic re-ignition protection in the event of accidental flameout during testing.
- Automated Post-Test Exhaust Cooling & Power-Off Protection: Includes forced exhaust heat dissipation upon test completion to accelerate turn-around times. Built-in power-off backup programs prevent data loss and equipment damage during sudden electrical interruptions.
Technical Specifications of Steel Structure Fire Retardant Coating Test Furnace
| Governing Test Standards |
ISO 834, BS 476-20/21, EN 13381-4/8, ASTM E119, UL 263, GB 14907-2018, GB/T 9978-2008, IMO FTP Code Part 11 |
| Standard Specimen Dimensions |
500 mm × 500 mm × 6 mm (Coated steel plate) |
| Heating Fuel & System |
0# / -10# Diesel; full-automatic spray burner assembly |
| Programmed Temperature Curves |
60 min: 925°C | 120 min: 1050°C | 180 min: 1115°C | 240 min: 1150°C | 300 min: 1180°C | 360 min: 1210°C |
| Furnace & Surface Thermocouples |
4 furnace sensors + 2 unexposed surface sensors (Class II K-type sheathed); Tolerance: ±4°C |
| Furnace Pressure Control |
Range: 0–100 Pa; Closed-loop constant control: 20 ± 3 Pa |
| Airflow Volume & Accuracy |
0–50 m³/min; Measurement accuracy: ≤ ±0.5 m³/min |
| Timer & Data Storage |
Timing range: 0–360 min (< ±2s accuracy); Onboard memory stores >100 test groups |
| Power Supply & Consumption |
AC 220V ±10%, 50 Hz; Total Power: 3.0 kW |
| Overall Equipment Dimensions |
1.6 m (L) × 1.6 m (W) × 1.6 m (H) |
System Architecture & Testing Workflow of Fire Retardant Coating Test Furnace
Standardized Testing Workflow:
- Apply the steel structure fire-retardant coating to the 500mm × 500mm × 6mm standard steel plate specimen and allow it to cure per standard instructions.
- Mount the specimen onto the test furnace opening, attaching K-type thermocouples to the unexposed face to measure heat conduction.
- Select the target fire-resistance duration (e.g., 180 or 360 minutes) on the touch screen or wireless PC interface.
- Trigger the automatic spray burner; the system heats up following the GB 14907 / ISO 834 curve while continuously recording furnace pressure and unexposed surface temperature.
- Upon test completion, the furnace automatically terminates heating, saves test records, and initiates forced exhaust cooling.
Target Customer Applications:
- Thin, ultra-thin, and thick steel structure fireproof coating manufacturers.
- Third-party fire protection product inspection centers and construction quality laboratories.
- Chemical engineering and polymer R&D institutes specializing in intumescent flame-retardant coatings.
- University civil engineering and fire safety science research centers.
Steel Structure Fire Retardant Coating Sample Test Furnace FAQ
Q1: What is the main evaluation metric for GB 14907 steel structure coating tests?
A: The primary metric is the Thermal Insulation Efficiency / Fire Resistance Limit, defined as the time required for the average temperature of the unexposed steel plate to reach a critical limit (typically 500°C or specified temperature rise) under the standard fire time-temperature curve.
Q2: How does the wireless PC control benefit multi-furnace laboratory operations?
A: Wireless linkage enables a single central computer terminal to wirelessly connect to and synchronously control multiple GTL-50 test furnaces. Laboratories can execute simultaneous batch tests, collect live data, and archive reports without extensive cabling.
Q3: What safety mechanisms are built into the diesel combustion system?
A: The GTL-50 includes automatic flameout detection with auto re-ignition capabilities, power-off memory protection, and over-temperature safety cut-offs to guarantee safe, unattended laboratory testing.
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