Explore our premium grade elastomeric rubber foam insulation and cryogenic pipeline protection profiles manufactured to stringent international quality metrics.
The global transition to sustainable mechanical design requires dynamic shifts in industrial thermal layouts. Current systems prioritize closed-cell structures over traditional fiberglass to control condensation and mitigate moisture intrusion. Thermal efficiency calculations now evaluate long-term thermal conductivity degradation rather than initial performance metrics alone.
Global Engineering, Procurement, and Construction (EPC) firms mandate stringent standard compliances including BS 476, CE, REACH, RoHS, UL94, and ASTM. Sourcing strategies focus heavily on material traceability, consistent density tolerances (40-55kg/m³), and the capacity for high-volume custom profile manufacturing.
Centering production in Dacheng—China's green building material capital—our facility utilizes 5 automated continuous line systems. Advanced automation coordinates the raw elastomer blending, controlled foaming profiles, and in-line dimensional measurements to maintain high-capacity outputs of over 600,000 m³ annually.
In modern HVAC systems, cryogenic lines, and high-temperature process piping, selecting the proper insulation is critical to thermodynamic efficiency. An optimized mechanical layout minimizes operational energy loss, mitigates Corrosion Under Insulation (CUI), and provides critical fire protection. Selecting the ideal layout requires balancing structural elasticity, thermal conductivity (λ), vapor diffusion resistance (μ), and chemical stability across varying temperature spans.
"Optimized industrial insulation is not merely a component; it is a system-wide investment in energy conservation. By pairing closed-cell elastomeric rubber foam for condensation control with premium rock wool for thermal resistance, modern facilities establish long-term mechanical safety and optimal energy conservation."
Kingflex elastomeric rubber foam utilizes a highly uniform, closed-cell matrix (exceeding 98% closed cells). This micro-cellular configuration stops water vapor transmission, preventing moisture accumulation inside the insulation. In low-temperature pipelines and central air conditioning chilled water pipes, this high moisture resistance prevents the insulation system from water saturation, keeping its thermal conductivity stable for over 15 years.
Industrial thermal management requires balancing material traits for specific applications. Kingflex provides both elastomeric rubber foam and high-density rock wool materials to cover different temperature requirements:
| Thermal Material Type | Standard Operating Temp | Vapor Resistance (μ) | Primary Application Fields | Key Advantages |
|---|---|---|---|---|
| Closed-Cell Elastomeric NBR/PVC | -40°C to +105°C | ≥ 10,000 | HVAC Ducts, Chilled Water Pipes, AC Lines | Condensation prevention, high flexibility, easy install |
| Cryogenic Synthetic Rubber | -200°C to +125°C | ≥ 20,000 | LNG Pipelines, ULT Systems, Petrochemical | Ultra-low temperature elasticity, prevents stress cracking |
| High-Density Industrial Rock Wool | Up to +650°C | Open-Cell (Vapor Permeable) | High-Temp Steam Pipes, Boiler Enclosures | Non-combustible (Class A1), high temperature stability |
With a 40-year manufacturing heritage, Kingflex operates at the intersection of energy-saving engineering, material science, and global logistics reliability.
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, development, production, and sales. In operation, Kingflex takes energy saving and consumption reduction as its core concept. We provide insulation solutions through consulting, research and development, manufacturing, installation guidance, and post-sale service to lead the development of the global building materials industry.
Kingflex was established by the Jinwei Group, which has more than a 40-year history. Kingway Group (Jinwei Group) was established in 1979. It was the first manufacturer of thermal insulation materials north of the Yangtze River. Over the decades, we have continuously modernized our production methods, evolving from manual workshops to Industry 4.0 automatic lines.
Our employees are amazing in their own right, but together they make Kingflex a 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 8 professional engineers in our R&D Department, 6 professional international sales specialists, and 230 workers in the production department.














Proven durability in major commercial HVAC, power plants, chemical complexes, and public transport projects globally.
















Direct supply configurations for rubber elastomeric systems, fire-rated tubing, and specialized high-temperature blankets.
At present, Kingflex has 5 large automatic assembly lines, with an annual production capacity of more than 600,000 cubic meters, and has become a designated production enterprise designated by the Ministry of Energy, the Ministry of Electric Power and the Ministry of Chemical Industry.
Read More →Supply customers all over the world with a full set of energy-saving insulation system solutions. Supply integrated solutions for thermal insulation, cold insulation, and noise reduction for buildings and industries.
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Technical guidance and material science details provided by Kingflex's engineering team.
Answer: It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. The closed-cell structure prevents moisture condensation on cold surfaces, making it ideal for chilled water lines and refrigeration systems.
Answer: Yes, our rubber foam insulation products are fire retardant and meet safety standards for construction and industrial projects. They comply with standard BS 476 (Class 0 and Class 1 ratings) and UL94, meaning they are self-extinguishing and will not spread flame.
Answer: Rubber foam is flexible, closed-cell, and moisture-proof, suitable for HVAC and building insulation. Rock wool is high-temperature resistant and fireproof, suitable for industrial high-temperature pipeline insulation. Rubber foam prevents moisture absorption on cold lines, while rock wool handles extreme high-temperature heat preservation.
Answer: Yes, we support OEM/ODM services to meet different project needs. We customize dimensions, sheet thicknesses, tube inner diameters, density ratings, and outer protective skins (like aluminum foil or self-adhesive backings).
Answer: Our products have passed BS 476, CE, REACH, RoHS, UL94, ASTM, and other international certifications, ensuring product quality and compliance with global standards.
Answer: Yes, all Kingflex products have full traceability. From raw material batching and extrusion runs to final packaging, every order is marked with production codes for quality assurance tracking.
Answer: We can produce sheets from 6mm up to 50mm in thickness. Multi-layer lamination processes can be performed if thicker layouts are required for complex engineering designs.
Answer: Under standard operating conditions and proper installation, Kingflex products maintain their insulation performance for 10 to 15 years. Outdoors, applying protective paint or UV jackets will help extend the material's service life.
Review our product list below. Click on any product to access specific technical datasheets, dimension tables, and to request a price quote.