Kingflex
Engineered to meet the most rigorous fire safety standards worldwide, including BS 476, UL 94, and ASTM certifications.
In modern structural engineering, selecting the right non-flammable insulation is not just a regulatory check-off; it is a critical safety measure. Specifying materials from verified Chinese factories ensures compliance with ASTM E84, BS 476, and European EN 13501 standards. This guide breaks down the physical properties, chemical setups, and manufacturing systems that position Kingflex and the Dacheng industrial cluster as key players in the global fire protection materials supply chain.
Thermal insulation plays two roles in industrial systems and high-rise commercial structures: managing heat and acting as a fire barrier. When exposed to fire, conventional cellular plastics degrade and release toxic fumes. Specialized non-flammable insulation, like elastomerics and rock wool, is designed to withstand extreme thermal energy.
The fire resistance of Kingflex NBR/PVC elastomeric rubber foam stems from its chemical composition. The formulation combines high-grade Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) along with specific flame retardants, including Alumina Trihydrate (ATH) and halogenated compounds. When exposed to heat, these compounds initiate an endothermic reaction, releasing water molecules at the thermal boundary. This cools the surface and forms a carbonized protective barrier that limits heat transfer and oxygen flow.
For applications requiring high-temperature resistance, rock wool utilizes spun basalt mineral fibers. Basalt, a volcanic rock, has an inherent melting point above 1000°C. This allows rock wool blankets and boards to serve as passive fire barriers that prevent fire from spreading through wall cavities and utility shafts.
Annual Capacity (m³)
Years of Industrial Heritage
Global Export Destinations
Class 0 Fire Compliance
Dacheng County in Hebei, China, serves as a hub for green building materials, offering direct access to key resources, optimized supply chains, and specialized technology.
Kingflex maintains 5 continuous, automated production lines. Operating under ERP systems, these lines ensure uniform foaming, consistent cell distribution, and precise dimensional accuracy for both sheets and tubes.
With eight dedicated chemical and material engineers, Kingflex develops custom formulations for cryogenic systems (-200°C) and high-temperature industrial setups, maintaining compatibility with international building codes.
Located near the Tianjin Port hub, Kingflex leverages domestic raw materials and deep-sea logistics to offer competitive lead times, stable pricing, and simplified transport for global projects.
| Insulation Material Category | Service Temp. Range | Thermal Conductivity (λ at 0°C) | Vapor Resistance (μ) | Global Fire Ratings |
|---|---|---|---|---|
| NBR/PVC Elastomeric Foam | -40°C to +105°C | ≤ 0.034 W/(m·K) | ≥ 10,000 (Closed Cell) | BS 476 Class 0, UL 94 V-0, ASTM E84 Class A |
| Cryogenic Rubber Systems | -200°C to +125°C | ≤ 0.031 W/(m·K) | ≥ 20,000 | EN 13501-1 Class B-s1, d0, UL 94 |
| Rock Wool Blankets / Boards | Up to +650°C | ≤ 0.040 W/(m·K) | 1 (Open Structure) | Non-combustible A1, BS 476 Part 4 |
Detailed engineering specifications and dimensions for direct technical evaluation.
Operating in the international building sector requires strict compliance with localized fire codes. Many engineers prioritize non-flammable solutions that meet local regulations, such as AS/NZS 4859.1 in Australia, DIN 4102 in Germany, and ASTM C534 in the United States.
Kingflex insulation products are tested by international bodies. These approvals verify that our products maintain low flame spread index (FSI < 25) and low smoke developed index (SDI < 50) when tested under ASTM E84. Our NBR/PVC elastomeric foam complies with British Standard (BS 476 Part 6 & Part 7), achieving the Class 0 rating required for commercial high-occupancy duct systems and public facility pipelines.
In addition to fire ratings, our formulations are REACH and RoHS certified. This guarantees that they do not contain toxic flame retardants, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), ensuring they are suitable for cleanrooms, data centers, and hospital HVAC setups.
How project managers deploy Kingflex non-flammable insulation across commercial and industrial environments.
In centralized HVAC systems, ductwork can act as a pathway for fire if lined with flammable materials. Kingflex closed-cell NBR/PVC sheets are used to line exterior and interior duct walls.
Key Benefit: Its integrated vapor barrier prevents condensation buildup, reducing the risk of mold growth and structural corrosion in humid spaces.
Liquid Natural Gas (LNG) and industrial ethylene systems operate at temperatures down to -200°C. Moisture ingress at these temperatures can lead to ice formation, which reduces thermal efficiency and can cause pipe rupture.
Key Benefit: Cryogenic NBR/PVC elastomeric formulations maintain flexibility at low temperatures, absorbing expansion and contraction stresses while keeping moisture out.
Steam distribution lines, power plants, and chemical reactors require materials that withstand high operating temperatures.
Key Benefit: Spun basalt rock wool blankets offer high thermal resistance up to 650°C. Applying a rock wool layer prevents heat loss, protects personnel, and provides structural protection against thermal runaway.
Mechanical rooms, pump rooms, and transport corridors generate low-frequency vibrations and airborne noise.
Key Benefit: The flexible structure of elastomeric foam and the porous matrix of rock wool absorb sound waves, helping engineers meet acoustic building codes.
Real-time validation, client communications, and on-site engineering performance records.
Detailed technical answers regarding the application, compliance, and properties of Kingflex non-flammable insulation.
High-quality elastomeric piping and sheet insulation solutions sourced directly from our manufacturing facilities.
