Engineered for precise temperature control, condensation prevention, and fire-safety compliance across industrial networks.
Cryogenic insulation systems form the baseline defense mechanism for complex, high-risk thermodynamic operations working at temperatures below -40°C down to liquid nitrogen (-196°C) and helium (-269°C) levels. At these critical thermal regimes, standard insulation compounds suffer structural failure, brittle cracking, and vapor intrusion. Selecting the appropriate structural configurations and chemical formulations of cryogenic thermal barriers determines operational safety, fluid stability, and energy footprint minimization.
Kingflex Insulation Co., Ltd. leads this space by engineering proprietary elastomeric rubber foam arrays, cellular structures, and multi-layered protection layouts. By controlling cell uniformity, density matrix boundaries, and closed-cell percentages, Kingflex blocks thermal convection and resists the massive vapor drive pressure that plagues extreme temperature gradients.
Evaluating the thermodynamic parameters, physical form-factors, and optimal application scopes of standard systems.
Widely utilized due to outstanding flexibility, closed-cell geometry, and built-in vapor resistance. It functions excellently in thermal regimes down to -40°C, and when engineered specifically in multi-layer cryogenic layouts, performs down to -200°C. Ideal for complex industrial piping and HVAC conduits.
Characterized by exceptional high-temperature limits and high fire safety class ratings. While highly vapor-permeable and requiring thick metal cladding in cryogenic operations, it acts as a reliable companion in dual-temperature cycles (heat and cold) where steam cleaning or severe structural protection is required.
Rigid foam systems with low thermal conductivity. Frequently used for structural pipe supports, tank skirts, and pre-insulated pipes in chemical facilities. PIR/PUR requires carefully integrated expansion joints due to its brittle profile and high coefficient of thermal contraction.
Kingflex Insulation Co., Ltd. stands as a premier manufacturing and trading powerhouse specializing in high-performance thermal and cryogenic protection solutions. Strategically situated in Dacheng, China—the nationally recognized capital of eco-friendly building materials—our enterprise centers operations around the philosophy of energy containment and systematic carbon reduction.
We provide a comprehensive project lifecyle approach: from upfront consulting, scientific R&D, customized industrial production, and on-site engineering installation guidance, to long-term post-sale technical audits. By establishing state-of-the-art laboratory testing centers, Kingflex keeps driving forward technical innovation in the global insulation domain.
Our operational history traces back to the prestigious Jinwei Group, established in 1979. Over a forty-year history of structural expansion, Jinwei was recognized as the first thermal insulation manufacturer north of the Yangtze River. Today, this rich history merges with contemporary digital manufacturing systems to guarantee unmatched material reliability.
Our workforce is structured to maintain precision quality output at scale. The Kingflex team includes a talented group of 8 professional engineers in our R&D Department, 6 highly specialized international sales consultants, and over 230 dedicated workers in our modern manufacturing facility.
At present, our factory operates 5 massive automated assembly lines. As a designated manufacturing partner recognized by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry of China, we satisfy stringent technical parameters under extreme scale requirements.
Standard measurements and material properties for elastomeric rubber foam sheets and pipe insulation.
| Material Matrix | NBR/PVC Elastomeric Foam | Cryogenic System Formulation |
|---|---|---|
| Available Thicknesses | 6mm - 50mm (Rolls & Sheets) | 9mm - 40mm (Integrated Pipes) |
| Internal Diameter (ID) Range | N/A (Flat Roll format) | 6mm - 114mm (Pipe Form-Factor) |
| Core Density Metric | 40 - 55 kg/m³ | 45 - 60 kg/m³ |
| Service Temperature Limit | -40℃ to +105℃ (Standard range) | Down to -200℃ (In multi-layer arrays) |
| Closed-Cell Content | ≥ 98% | ≥ 98% (High Density Vapor Barrier) |
| Thermal Conductivity (λ) | ≤ 0.035 W/(m·K) at 0°C | ≤ 0.032 W/(m·K) at -20°C |
| Compression Resilience | Over 80% recovery rate | Over 85% recovery rate |
We secure international compliance to ensure trouble-free project approvals globally.
Our solutions hold complete structural compliance and certification under BS 476 Part 7 (fire retardancy), CE, REACH, RoHS, UL94, and ASTM standards. This rigorous certification path guarantees every cubic meter leaving our assembly line is fully traceable and meets the strict chemical and performance limits of worldwide energy grids.
How Kingflex supports international procurement and minimizes supply chain vulnerabilities.
We extend far beyond standard manufacturing. Kingflex provides on-site engineering installation guidance, design consultation, and tailored drawings to ensure cold insulation materials are applied with minimum mechanical stress and zero micro-voids.
Operating out of Dacheng, the core building materials manufacturing center of China, allows us to source high-grade raw components instantly. Combined with our 5 automatic production lines, we reduce lead times by 30% compared to traditional regional competitors.
Every shipment is printed with production codes linking to the corresponding testing report, tracking raw chemical batches, vulcanization temps, and expansion chamber properties. This protects developers against quality failure risks.
Kingflex insulation materials are deployed worldwide across these key sectors:
Prevents external moisture condensation and reduces energy leakage on HVAC chilled loops in critical structures like airports, medical complexes, and luxury hotels.
Maintains high resilience under varying temperature profiles, preventing pipeline freeze-cracks and providing excellent resistance against corrosive chemicals.
Applied in multi-layer cryogenic barrier structures to maintain Liquefied Natural Gas (LNG) at stable temperatures down to -162°C, preventing dangerous boil-off gas (BOG).
Specially formulated elastomer matrices withstand heat spikes up to +105°C, making them highly effective for dual hot/cold cycle piping networks.
Direct feedback and clear transparency drive our long-term partnerships.
We deploy advanced testing machinery and clean rooms to manufacture insulation rolls and tubes to the highest standards.
















Providing customizable material configurations to match specific thermal profiles.
Clear answers to crucial engineering questions regarding cryogenic and elastomeric thermal barrier designs.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its high closed-cell count blocks water vapor transport, preventing structural moisture build-up and preserving thermal properties.
Yes, our rubber foam insulation products are fire retardant, which meets the safety standards of building and industrial projects. They comply with strict flammability standards including BS 476 Part 7 and UL94 testing, ensuring self-extinguishing capabilities.
Rubber foam is flexible, closed-cell, and highly moisture-proof, making it ideal for HVAC, condensation prevention, and sub-zero processes. Rock wool is high-temperature resistant and fireproof, suitable for high-heat process pipelines where moisture ingress is less critical.
Yes, we support comprehensive OEM/ODM services. We can adjust density profiles, customize dimensions, print structural markers, and supply composite layers to meet specific project needs.
Our products have passed BS 476, CE, REACH, RoHS, UL94, ASTM, and other international certifications, ensuring product quality and compliance with global standards.
Yes, Kingflex products have complete traceability. Each production batch is assigned a unique tracking identifier that links directly back to the raw material inputs and quality lab test sheets.
We can produce continuous sheets and rolls in thicknesses from 6mm up to 50mm, allowing designers to select the optimal thickness to prevent surface condensation.
Under recommended operational temperatures and standard atmospheric conditions, our premium closed-cell structures deliver an expected service life of 10 to 15 years.
A glimpse into the processing and packing cycles inside the Kingflex manufacturing plant.

















Select from our certified elastomeric tubes, colorful rubber pipes, and high-performance cryogenic layers.