Kingflex
High-performance insulation engineered to optimize HVAC performance, minimize thermal transmission, and prevent condensation.
Critical analysis of modern refrigeration systems, environmental regulations, and elastomeric engineering performance.
The global phasing out of high-GWP (Global Warming Potential) refrigerants like R-410A in favor of natural agents (CO2, NH3) or HFO blends has altered operational temperatures of refrigerant lines. Systems operating under higher thermal deltas demand superior vapor-transmission resistance. Elastomeric NBR/PVC foam structures play a vital role in preventing surface condensation and thermal bridging under these harsh new operating parameters.
With frameworks such as ASHRAE 90.1, EN 14304, and the EU Energy Performance of Buildings Directive setting strict energy limits, mechanical piping thermal losses must be strictly minimized. Deploying NBR/PVC closed-cell tubes with high thermal resistance factor (λ ≤ 0.034 W/m·K at 0°C) ensures projects comply with international structural energy assessments.
Modern ventilation networks in airports, medical establishments, and commercial high-rises demand rigorous indoor air quality (IAQ) and low toxic smoke emission levels. Standard NBR/PVC formulations are increasingly augmented or replaced by Halogen-Free and low-smoke density elastomers that comply with BS 476 Part 6 & 7 Class 0 and UL 94 V-0 flame ratings.
Kingflex Insulation Co., Ltd. is a premium manufacturing and trading combo for high-grade thermal insulation products. Our state-of-the-art research development and production center is situated in Dacheng, China—the recognized capital of green building materials. Operating with a core objective of maximizing industrial energy savings and lowering emissions, we offer end-to-end, integrated solutions spanning technical consultation, R&D, custom manufacturing, installation assistance, and reliable post-sale support.
We supply thermal insulation, cryogenic insulation, and acoustic reduction matrices for construction, petroleum, chemical, national defense, and aerospace applications. In the past 16 years, our high-performance systems have successfully reached projects in more than 66 countries globally.
Kingflex was established by the Jinwei Group, which holds a proud history of more than 40 years. Founded in 1979, Jinwei Group pioneered the thermal insulation industry as the first manufacturer of thermal insulation materials located north of the Yangtze River. This rich operational experience informs our current quality standards and technical capability, allowing us to consistently deliver top-tier materials that satisfy rigid industrial project codes.
Meet our dedicated engineering specialists and learn about our high-tech testing laboratories.
While our individual team members are experts in their fields, together they form a cohesive force that drives Kingflex forward. We operate with a shared vision of delivering first-class service to clients across the globe. Our R&D department features 8 professional materials science engineers, while our operations are supported by 6 international sales experts and 230 skilled production professionals.
Our designated laboratories perform real-time verification of raw materials, ensuring cross-linking uniformity, exact density profiling, and strict fire performance testing before any production batch leaves the factory floor.
Direct factory standard dimensions, material grades, and customizable parameters to assist global procurement directors.
| Technical Parameter | Standard Specification Value (NBR/PVC) |
|---|---|
| Material Base | Elastomeric Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) cross-linked polymer |
| Thickness Range Available | 6mm, 9mm, 13mm, 15mm, 19mm, 25mm, 32mm, 40mm, up to 50mm |
| Density Profile | 40 - 55 kg/m³ (optimizes flexibility and structural integrity) |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C |
| Water Vapor Permeability Resistance (μ) | ≥ 10,000 (Built-in vapor barrier limits moisture infiltration) |
| Service Temperature Range | -40°C to +105°C |
| Fire Safety Rating | BS 476 Part 7 Class 1 / Class 0, UL94 V-0, ASTM E84 compliant |
| Mechanical Compression Resilience | > 80% recovery rate |
| Dimension & Performance Matrix | Details & Commercial Ranges |
|---|---|
| Inner Diameter (ID) Range | 6mm to 114mm (compatible with global copper & steel pipe dimensions) |
| Thickness Options | 9mm, 13mm, 19mm, 25mm, 32mm, 40mm |
| Extrusion Technology | Closed-cell extrusion with inner-wall slip-agent for rapid pipe installation |
| Core Advantages | Reduces pipe freezing, condensation, and corrosion under insulation (CUI) |
| Environmental Compliance | REACH, RoHS, CFC/HCFC-free manufacturing flow |
Meeting stringent global construction codes to ensure safe integration in major public infrastructure projects.
Global architectural and MEP engineering firms prioritize supplier scalability, continuous quality control, and verifiable fire certifications. Kingflex resolves these constraints by maintaining a permanent inventory buffer, supporting custom OEM sizing, and providing raw material batch traceability codes. As a designated manufacturer for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry, our facility meets high industrial compliance thresholds.
How high-density elastomeric systems solve structural challenges across diverse operating environments.
Standard insulation degrades rapidly in cryogenic lines due to thermal shock and moisture ingress. Our cryogenic elastomeric foam insulation provides thermal stability down to -200°C, maintaining structural flexibility without cracking. This is highly suitable for LNG pipelines, petrochemical facilities, and cold chain shipping terminals.
Our open-cell structures are engineered specifically for high-frequency acoustic dampening in HVAC duct linings and mechanical plant rooms. Incorporating NBR-based acoustic foam helps mechanical engineers satisfy local municipal noise regulations for residential and commercial zones.
Kingflex is developing advanced phase-change material (PCM) integrated elastomeric foams. These hybrid systems store and release latent heat at design temperatures, minimizing mechanical HVAC cycling. Additionally, our R&D team is refining bio-based polyols to transition toward carbon-neutral product lines.
Transparent global business interactions and proof of international project success.
We maintain open communication channels with our distributors, project managers, and wholesalers. Our internal workflow ensures rapid price quotations, custom packaging support, and detailed shipping documentation for smooth port clearance.
Delivering high-quality thermal insulation for large-scale energy networks and commercial structures.
Answers to technical and engineering questions regarding NBR/PVC rubber foam applications.
A1: It is primarily used for insulating commercial HVAC air ducts, refrigeration liquid and gas suction lines, chilled water pipelines, solar hot water systems, and industrial plant processing pipes. Its closed-cell structure prevents surface condensation, manages thermal energy loss, and offers acoustic soundproofing.
A2: Yes. Kingflex rubber foam insulation is formulated with built-in flame retardants, allowing it to meet rigorous fire safety standards including BS 476 Class 0, UL94 V-0, and ASTM E84. The material is self-extinguishing and does not propagate fire spread.
A3: Rubber foam features a flexible, closed-cell polymer structure that naturally resists moisture absorption, making it suitable for cold line applications and high-humidity HVAC environments. Rock wool, conversely, is an open-fiber mineral structure with excellent high-temperature fire barrier properties, suited for heavy industrial steam mains and high-heat furnaces.
A4: Yes. We offer comprehensive OEM/ODM manufacturing. We customize wall thickness, inner diameter, self-adhesive backing options, foil jacketing layers, and coloring schemes to meet specific project guidelines.
A5: Kingflex products are tested and verified by international bodies, carrying certifications such as BS 476, CE (EN 14304), REACH, RoHS, UL94, and ASTM. This ensures compliance with structural and environmental codes globally.
A6: Yes. Every production run is marked with factory batch-level identifier codes. This permits tracking of raw material mix records, extrusion conditions, and quality verification tests for complete project accountability.
A7: Our production machinery is capable of extruding and calendering rubber foam sheet rolls in thicknesses ranging from 6mm to 50mm, accommodating diverse mechanical system specifications.
A8: Under standard operational parameters and when properly installed using approved adhesives and coatings, our NBR/PVC elastomeric materials have an active service life of 10 to 15 years.
Packaging standards designed to protect bulk insulation products during maritime and continental shipping.
Explore our diverse catalog of custom and standard elastomeric thermal isolation products.
Flexible closed-cell design prevents condensation on chilled water pipes and copper refrigerant lines.
Specially formulated to prevent moisture accumulation and stop Corrosion Under Insulation (CUI).
Highly flexible material suitable for complex pipe configurations and tight installation spaces.
Standard industry solution offering optimal thermal insulation for residential and commercial HVAC.
A cost-effective thermal insulation option with stable thermal conductivity and moisture resistance.
Engineered specifically for high-efficiency commercial air distribution and heating systems.
Integrated insulation systems designed to handle wide temperature swings in process piping.
Specialized structural grade designed for ultra-low temperature and cold process systems.
Maintains flexible insulation properties down to -200°C without becoming brittle.
High density barrier system prevent air and moisture infiltration in cold storage units.
Provides fire protection and thermal insulation for high-temperature industrial pipelines.
Flexible mineral wool blanket designed for industrial tank insulation and fire safety wrap.
Select options below to view specific factory pricing tiers, custom sizing options, and minimum order quantities.
Direct factory roll solutions designed for broad-surface duct coverings and structural sound-dampening panels.
High durability insulated tubing for extreme thermal gradients in municipal and district chilled cooling lines.
We support customized manufacturing across all product categories. Contact our engineering support desk to configure density levels, thermal coefficients, and dimensions for your specific mechanical installation requirements.