Kingflex
Engineered for minimal thermal conductivity, moisture-proofing, and high fire retardancy
Flexible design with exceptional acoustic dampening and acoustic absorption performance properties.
High-grade solution customized for low temperature piping systems to control sweating.
Industrial-scale elastic foam sheet rolls offering stable structural thermal protection.
Advanced elastomeric system maintaining high flexibility at extreme cryogenic levels.
Specifically engineered for Ultra-Low Temperature (ULT) setups to prevent thermal bridging.
High closed-cell structure tubing with exceptional moisture resistance factors.
Complies with global fire safety regulations, offering self-extinguishing capabilities.
Premium elastomeric compound tailored for complex LNG and cryogenic processes.
Understanding Thermal Dynamics, Vapour Drive Resistance, and Material Performance in Modern HVAC/R Systems
In modern industrial and commercial cooling setups, insulating refrigerant pipelines is not just about keeping the fluid cool; it is about preventing thermodynamic losses and preventing condensation. A high-efficiency insulation system must exhibit an exceptionally low thermal conductivity (λ-value). For elastomeric rubber foam insulation, Kingflex ensures a thermal conductivity of ≤ 0.034 W/m·K at 0°C.
Moreover, when cold lines run through high-temperature, humid environments, they are subjected to persistent vapour pressure. Liquid water has a thermal conductivity approximately 24 times higher than that of dry air. Therefore, any moisture absorption degrades the thermal performance. High-performance closed-cell elastomeric rubber foam functions as a built-in vapour barrier, featuring a vapour diffusion resistance factor (μ-value) exceeding 7,000 to 10,000, ensuring stable thermal conductivity throughout its service life.
How Dacheng's Advanced Production Hub Drives Cost-Efficiency and Global Compliance
Located in Dacheng, China—the world-recognized cluster for green building materials—Kingflex utilizes 5 state-of-the-art automatic continuous assembly lines. This production setup boasts an annual manufacturing capacity of over 600,000 cubic meters of high-density elastomeric foam.
To serve building infrastructure worldwide, materials must meet international fire safety and chemical emission criteria. Kingflex is fully certified under BS 476, CE, REACH, ROHS, UL94, and ASTM standards, which guarantees compliance for Tier-1 engineering projects.
With direct access to industrial grade NBR/PVC raw components, our manufacturing plants can customize tube diameters (from 6mm up to 114mm internal diameter) and wall thicknesses (6mm up to 50mm) while maintaining cost advantages.
Embracing Zero ODP, Low GWP, and Non-Toxic Formulations for Green Projects
The global thermal insulation landscape is undergoing a structural shift driven by climate policy, energy ratings (such as LEED and BREEAM), and stricter chemical safety criteria. Traditional foams containing halogenated blowing agents are being phased out in favor of eco-friendly, zero-halogen alternatives. The integration of modern heat pumps and HVAC/R loops using natural refrigerants (such as CO₂ and ammonia) demands robust insulation materials due to extreme operating temperature differentials.
Furthermore, indoor air quality (IAQ) regulations demand zero formaldehyde emissions and low volatile organic compounds (VOCs). NBR/PVC rubber foam insulation systems, like Kingflex's product range, are optimized to prevent dust fiber dispersion and VOC outgassing. This makes them highly suitable for sensitive micro-environments like hospitals, microelectronics fabs, and cleanrooms.
Discover how elastomer systems adapt to distinct operating environments
Preventing external condensation on chilled water pipes and air duct structures. High elastic performance simplifies installation around valves, tees, and tight bends, which reduces labor overheads.
Used in LNG processing facilities and industrial refrigeration networks. Utilizing multi-layered cryogenic rubber foam sheets prevents thermal shock and structural cracking.
Closed-cell elastomer formulations prevent the penetration of water vapour and chemicals to the pipe surface, which protects copper and carbon steel pipelines from corrosion under insulation (CUI).
A Professional Manufacturing & Trading Combo with Over 40 Years of Heritage
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Kingflex's research development and production department is located in the well-known capital of green building materials in Dacheng, China. It is an energy-saving, environmentally friendly enterprise concentrating on research and development, production, and sales. In operation, Kingflex takes energy saving and consumption reduction as its core concept. We provide insulation solutions by means of consultation, research and development production, installation guidance, and post-sale service to lead the development of the global building materials industry.
Kingflex is established by the Jinwei Group which has more than 40 years of history. The Kingway Group was established in 1979. It was the first manufacturer of thermal insulation materials north of the Yangtze River.
Our employees are amazing in their own right, but together they are what makes Kingflex such a fun and rewarding place to work. The Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first-class service to our clients. Kingflex has eight professional engineers in the R&D Department, 6 professional international sales specialists, and 230 workers in our production department.
Ensuring compliance and performance through regular batch testing and validation
Standard NBR/PVC structural metrics for building and plant applications
Material: NBR/PVC elastomer compound
Thickness range: 6mm - 50mm
Density: 40 - 55 kg/m³
Service Temperature Limits: -40℃ to 105℃
Material: High density NBR/PVC elastomer
Thickness range: 9mm - 40mm
Internal Diameter (ID): 6mm - 114mm
Density: 40 - 55 kg/m³
| Parameter Test Method | Target Standard / Limit Value | Insulation Class Conformance |
|---|---|---|
| Thermal Conductivity (at 0°C) | ≤ 0.034 W/m·K | ASTM C518 / ISO 8301 |
| Water Vapour Diffusion resistance (μ) | ≥ 7,000 (standard), up to 10,000 | BS EN 12086 / DIN 52615 |
| Fire Retardant Performance | Class 0 (BS 476 Part 6 & 7), B1 (GB8624) | UL 94 Standard V-0 compliant |
| Linear Shrinkage (at 105°C for 7 days) | ≤ 5.0% | ASTM C534 Section 11 |
High-resolution inventory list covering foam tubing, specialized soundproofing, and cryogenic sleeves
Professional grade elastomeric tube featuring high dimensional stability.
Shielded layer designed to counteract chemical contaminants and corrosion under insulation.
High resilience formulation matching flexible structure layouts.
Standard NBR/PVC closed cell pipe design for light & heavy commercial chillers.
Optimized cell-density formulation designed to limit heat radiation transfers.
Engineered for major building ventilation loops and commercial air condition ducts.
Fully integrated thermal system with specialized layout accessories.
Stands up to cryogenic thermal cycling without structural degradation.
Combats deep cooling system losses with a dual performance matrix.
Stable, long-term insulation for chemical fluid process pipelines.
High-density structural core featuring exceptional heat safety profile.
Extremely durable high-heat protection for furnace networks and power line complexes.
Highly flexible, durable sheets suitable for large-diameter ducts and custom fittings.
Continuous-extrusion tubing with high dimensional stability for standard copper pipes.
Operational footprints and verified client interactions across diverse construction zones
We believe in transparent engineering partnerships. Below are snapshots of real-time communication logs with global procurement officers confirming material approvals, compliance verification, and tracking metrics.
A closer look at Kingflex's advanced continuous vulcanization lines and inventory management
Expert answers addressing fire safety ratings, custom specifications, performance comparisons, and order traceability
Rubber foam is flexible, closed-cell, and moisture-proof. It is highly suited for cold pipelines like HVAC loops and refrigeration lines because it prevents condensation without requiring an external vapour barrier.
Rock wool is high-temperature resistant and fireproof, making it suitable for industrial high-temperature steam pipelines and heavy furnace insulation.
Wholesale rolls, adhesive backing options, and specialized piping sleeves direct from our factory
Self-adhesive backing simplifies installation on large HVAC ducts and flat surfaces.
Standard commercial piping sleeves designed to prevent condensation in chilled water loops.
Color-coded sheets to simplify pipeline identification and improve installation aesthetics.
Mineral wool section piping designed for high-temperature steam lines and industrial processes.
Highly flexible, durable elastomeric tubing engineered for long-term thermal efficiency.
Advanced elastomeric formulation offering consistent thermal control for commercial HVAC systems.
Highly flexible insulation sleeves designed for rapid installation on complex plumbing paths.
Premium closed-cell piping insulation designed to reduce energy losses in HVAC lines.