BBMG ENERGY SAVING MATERIAL & TECHNOLOGY(DACHANG)CO.,LTD.
| Flexural strength | ≥25 MPa |
| Density | 1000-1200 kg/m³ |
| Payment Terms | L/C,T/T |
| Screw Holding Capacity | 1300 N |
| Modulus of elasticity | 5630 MPa |
| Smoke Toxicity | ZA1 |
| Fire performance | Class A, non-combustible |
| Place of Origin | china |
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Product Specification
| Flexural strength | ≥25 MPa | Density | 1000-1200 kg/m³ |
| Payment Terms | L/C,T/T | Screw Holding Capacity | 1300 N |
| Modulus of elasticity | 5630 MPa | Smoke Toxicity | ZA1 |
| Fire performance | Class A, non-combustible | Place of Origin | china |
| High Light | Tunnel rock wool sound insulation panels ，Windproof rock wool sound insulation panels ，Windproof stone wool insulation board | ||
Specialty rock fiber panel engineered for highway tunnels, railway tunnels, and subway running tunnel sidewalls and arches. The substrate consists of high-density rock fiber with a surface coated in carbon smoke-resistant, UV-resistant polyurethane or fluorocarbon finish. These panels provide exceptional resistance to long-term corrosion from vehicle exhaust gases (NOx, SOx) and chemical salt mist in tunnel environments.
Designed to withstand repeated positive and negative wind pressure caused by train piston effects, the panels meet stringent tunnel fire safety requirements for Class A non-combustibility and low smoke toxicity. The smooth surface facilitates easy cleaning, allowing direct high-pressure water jet (≤20MPa) cleaning by tunnel washing vehicles without staining or residue buildup.
Lining decoration and protection systems for sidewalls and arches of highway tunnels, urban underpass tunnels, railway tunnels, subway running tunnels, and underground utility tunnels.
| Parameter | Unit | Typical Value |
|---|---|---|
| Density | kg/m³ | 1000-1200 |
| Flexural strength | MPa | ≥25 |
| Modulus of elasticity | MPa | 5630 |
| Fire performance | - | Class A, non-combustible |
| Smoke Toxicity | - | ZA1 |
| Moisture Swelling Rate | % | 0.05 |
| 24-hour water absorption thickness expansion rate | % | 0 |
| Screw Holding Capacity | N | 1300 |
| Impact Strength | kJ/m² | 3 |
| Freezing resistance (100 Freeze-thaw cycles) | No cracking or delamination observed, flexural strength ratio of 96% | |
| Moisture resistance (after cyclic testing) | Water absorption thickness expansion rate 0.2%, Internal bonding strength retention rate 113%, Static flexural strength retention rate 99% |
Company Details
Business Type:
Manufacturer
Total Annual:
>70000000USD
Employee Number:
>600
Ecer Certification：
Verified Supplier
BBMG Energy Saving and Thermal Insulation Technology (Dachang) Co., Ltd. is the core manufacturing enterprise of BBMG New Material Industrialization Group under BBMG Group. Relying on the group's 70 years of experiences in the R&D of inorganic fiber products, and continuous innovation i... BBMG Energy Saving and Thermal Insulation Technology (Dachang) Co., Ltd. is the core manufacturing enterprise of BBMG New Material Industrialization Group under BBMG Group. Relying on the group's 70 years of experiences in the R&D of inorganic fiber products, and continuous innovation i...
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