Kingflex
In modern process industries, transporting and storing liquefied gases such as LNG (Liquefied Natural Gas), ethylene, liquid nitrogen, and liquid oxygen demands absolute thermal control. Operating at temperatures down to -162°C (for LNG) and even lower requires specialized engineering to mitigate Boil-Off Gas (BOG), prevent thermal stress fractures, and block moisture ingress.
Traditional insulation setups are prone to water vapor permeation, which quickly translates into ice build-up, drastic loss of thermal efficiency, and catastrophic CUI (Corrosion Under Insulation). Global EPC (Engineering, Procurement, and Construction) companies and plant operators now prioritize elastomeric cryogenic rubber foam due to its built-in water vapor barrier, flexibility under extreme cold, and low thermal conductivity.
As a leading B2B supplier, Kingflex Insulation Co., Ltd. addresses these critical issues by manufacturing multi-layered, closed-cell elastomeric configurations designed to sustain structural integrity in harsh industrial settings.
The performance of Kingflex cryogenic elastomeric pipe insulation lies in its advanced chemical matrix. Combining Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) through high-pressure continuous extrusion creates an evenly distributed, fine cell network.
Over 98% closed cells trap dry air within the insulation structure, achieving a low, stable thermal conductivity. Unlike open-cell products or fibrous rock wool, it resists physical cell compression and water saturation.
Boasting a compression resilience of over 80%, Kingflex elastomeric materials absorb mechanical stresses caused by rapid cooling cycles inside low-temperature piping networks.
By incorporating the vapor barrier throughout the entire thickness of the material, a minor scratch or surface tear will not compromise the thermal insulation system.
Our standard production supports customizable sizes to meet the requirements of ASTM C534 and various European specifications:
| Property / Dimension | NBR/PVC Insulation Sheet Roll | NBR/PVC Insulation Pipe / Tube |
|---|---|---|
| Thickness Range | 6mm - 50mm | 9mm - 40mm |
| Inner Diameter (ID) | N/A (Flat sheet/roll form) | 6mm - 114mm |
| Density | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature Range | -40℃ to 105℃ (Specials down to cryogenic ranges) | -40℃ to 105℃ (Specials down to cryogenic ranges) |
| Closed-Cell Rate | ≥ 98% | ≥ 98% |
| Flame Retardancy | Self-extinguishing off fire | Self-extinguishing off fire |
Kingflex R&D and production facilities are based in Dacheng, China, widely recognized as the capital of energy-saving, green building materials. Operating within this industrial cluster yields major supply chain advantages:
This scale allows us to offer competitive rates without compromising structural parameters, making Kingflex the choice for energy-saving projects across global industrial zones.
Scenario: Commercial malls, hospitals, and high-rise developments.
Need: Anti-condensation, anti-freezing, and acoustic noise reduction for chilled water pipes and air ducts.
Solution: Kingflex NBR/PVC elastomeric rubber foam pipes applied with specialized 520 thermal insulation glue.
Scenario: LNG carriers, offshore rigs, and coastal refineries.
Need: High salt spray resistance, UV stability, and low temperature resilience.
Solution: Layered rubber foam coupled with UV-resistant coatings or aluminum cladding to defend against corrosive salt air.
Scenario: Low-temperature nitrogen gas process piping and power station steam pipelines.
Need: Extreme thermal resistance combined with strict flame retardancy.
Solution: Custom dual insulation assemblies utilizing rock wool combined with elastomeric barrier sheets.
Kingflex was founded by the Jinwei Group, which has over 40 years of industry experience. Established in 1979, the Jinwei Group was the first manufacturer of thermal insulation materials north of the Yangtze River.
Our team comprises 8 dedicated R&D engineers, 6 international sales consultants, and 230 production workers. Over the past 16 years, we have exported to more than 66 countries, establishing standardizations for high-efficiency insulation in building and energy sectors.
At present, Kingflex operates 5 large automatic assembly lines, with an annual production capacity exceeding 600,000 cubic meters. We are a designated production enterprise certified by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry of China.
Our manufacturing protocols and products are compliant with international standards, backed by certifications such as:
Our systems are specified in domestic and international construction projects, heavy industries, and infrastructure networks. See below for some of our project references and customer chats highlighting our performance.
Industrial procurement teams must evaluate key technical parameters when selecting a manufacturer for low-temperature insulation:
Verify that the thermal conductivity curve remains low and stable across the entire operating temperature range. Request third-party ASTM reports to confirm performance under thermal cycles.
For cold insulation, a high water vapor resistance factor (μ) is essential. A vapor resistance factor over 10,000 prevents internal condensation without requiring a secondary cladding barrier.
Reliable projects require clear raw material traceability. Kingflex ensures full batch testing for flame propagation, density distribution, and physical dimensions on all shipments.
