Explore our primary high-performance closed-cell elastomeric rubber foam materials manufactured to international code compliances.
In modern commercial HVAC design, refrigerant pipelines operate under extreme thermal differentials. Cooling loops utilizing modern low-GWP HFCs, HFOs, or natural refrigerants like CO₂ (R744) and Ammonia (R717) run at temperatures significantly below ambient dew points. Without rigorous conformance to professional refrigerant pipe insulation codes, cold pipe surfaces instantly initiate localized atmospheric condensation. This results in liquid dripping, which triggers ceiling damage, structural mold colonization, systemic loss of thermal efficiency, and severe Corrosion Under Insulation (CUI).
Design engineers determine thickness constraints based on ASHRAE guidelines using the following thermal balance equation to prevent surface condensation:
Where Th represents the baseline insulation wall thickness, R_o is the surface heat transfer resistance, λ is thermal conductivity, T_amb is ambient dry-bulb temperature, T_line is operating fluid temperature, and T_dew is local dew-point temperature.
The global regulatory push toward zero-emission structures and carbon-neutral building cycles is forcing a structural shift in mechanical thermal insulation systems. Kingflex’s engineering department is pioneering this change via three major material development vectors:
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our research, development, and state-of-the-art production facility is situated in Dacheng, China—a widely recognized hub for green-building materials. As an energy-saving and environmentally friendly enterprise, Kingflex concentrates heavily on the R&D, production, and worldwide sales of advanced elastomeric solutions.
We operate with energy saving and consumption reduction as our core concept. We provide end-to-end insulation systems through technical consultation, specialized R&D, installation guidance, and dedicated post-sale services, leading the development of the global building materials industry.
Established by the Jinwei Group (also known as Kingway Group, founded in 1979) which boasts over 40 years of manufacturing history, Kingflex is backed by the heritage of the very first manufacturer of thermal insulation materials north of the Yangtze River.
No single insulation material fits all mechanical systems. Distinct industries present unique challenges requiring localized material formulations and design parameters:
In institutional buildings, fire safety and air purity are critical. High-occupancy buildings specify Class 0 NBR/PVC materials. Kingflex NBR foam prevents condensation on dual-temperature and chilled lines, ensuring no dust or fibrous particle erosion enters air delivery streams.
Cryogenic terminals, LNG pipelines, and pharmaceutical process lines operate below -40°C down to -200°C. Standard rubber foams embrittle and crack. Kingflex offers specialized flexible diolefin materials engineered to stay flexible at cryogenic temperatures, preventing insulation cracking under rapid thermal shifts.
Corrosive, salt-heavy sea atmospheres require materials with high chemical resistance. Our closed-cell rubber foam withstands acids, alkalis, and ozone exposure. The built-in moisture barrier reduces salt water intrusion, protecting expensive alloy piping from galvanic corrosion.
Operating from the capital of green building materials in Dacheng, China, Kingflex integrates modern manufacturing methodologies with localized supply chain resilience. Our facility features five large-scale automated continuous vulcanization assembly lines. We manage quality from raw elastomer polymer mixing to continuous high-temperature foaming.
Our technical specifications for standard NBR/PVC products ensure compliance with global engineering requirements:
| Property / Characteristic | NBR/PVC Foam Sheet Roll | NBR/PVC Foam Pipe / Tube |
|---|---|---|
| Base Material Structure | NBR/PVC Elastomeric Foam | NBR/PVC Elastomeric Foam |
| Thickness Range | 6mm to 50mm | 9mm to 40mm |
| Inner Diameter (ID) | N/A (Flat sheet / roll) | 6mm to 114mm |
| Product Density | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to 105℃ | -40℃ to 105℃ |
| Closed-Cell Content | ≥ 98% | ≥ 98% |
| Thermal Conductivity | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.034 W/(m·K) at 0°C |
| Compression Resilience | Over 80% recovery rate | Over 80% recovery rate |
Building projects require third-party verification to pass structural building inspections. Kingflex insulation maintains compliance with strict international testing frameworks:
Conforms to BS 476 Parts 6 & 7 (Class 0 and Class 1 fire spread rating) and CE certifications for building product safety.
Meets ASTM E84 25/50 flame spread and smoke index limits, and UL 94 vertical burn classification standards.
Complies with REACH and RoHS standards, certifying that no PBBs, PBDEs, or heavy metal plasticizers are used during production.
International sourcing requires rigorous quality control and logistics management. Kingflex supports international sourcing managers with:
Kingflex products are installed across industrial sectors, commercial buildings, and infrastructure projects worldwide.
Designed for wrapping large mechanical ducts, heat exchangers, and commercial tanks. Provides consistent thermal barriers across large surface areas.
Pre-formed elastomeric pipe insulation designed for slide-on or slit-and-glue installation on copper refrigerant lines and hot/chilled water systems.
Review correspondence screenshots showing our technical coordination and global service support:
Select from our specialized elastomeric sheet rolls, high-density tubing, and rock wool insulation products.
Kingflex
