Kingflex
Kingflex
Explore our highly specified range of closed-cell elastomeric foam sheets, rolls, and pre-formed pipe insulation systems.
Within mechanical engineering and building insulation specification frameworks, 30mm pipe lagging represents a critical threshold thickness. In environments prone to extreme ambient shifts or severe humidity spikes, under-specifying insulation thickness causes thermal bridging and condensation, leading to moisture retention and systemic piping degradation (Corrosion Under Insulation, or CUI).
By opting for a 30mm elastomeric NBR/PVC foam system, specifiers establish an aggressive thermal barrier. The high density of our cell structure limits heat transfer (with a thermal conductivity factor, or $\lambda$ value, of $\le 0.034 \text{ W/(m}\cdot\text{K)}$ at $0^\circ\text{C}$). This keeps surface temperatures above the dew point of surrounding air, stopping moisture formation on cold HVAC chilled-water lines and cryogenic piping networks.
Elastomeric NBR/PVC structures with a 30mm thickness contain billions of independent micro-cells. Unlike open-cell products, this design provides a dual boundary: it resists heat flow and acts as a built-in vapor barrier, avoiding the need for external cladding in standard indoor environments.
Keeping pace with strict environmental regulations and high performance standards in industrial mechanical engineering.
Global specifications favor materials with low global warming potential (GWP) and zero ozone depletion potential (ODP). Modern elastomeric foams are halogen-free, fiber-free, and dust-free, ensuring high indoor air quality (IAQ) and complying with REACH and RoHS standards.
Compliance with British Standard BS 476 (Class 0 and Class 1), UL94 flame classifications, and ASTM E84 surface burning characteristics is crucial. 30mm NBR/PVC materials are formulated to be self-extinguishing, minimizing smoke and preventing flame spread.
Long-term thermal insulation helps operators reduce energy consumption. High-quality NBR/PVC maintains its thermal conductivity value throughout its 10-to-15-year operational life, offering consistent returns on investment.
A Manufacturing & Trading Combo with Over 40 Years of History
Established by the Jinwei Group (founded in 1979), Kingflex stands as the pioneer manufacturer of high-grade thermal insulation materials north of the Yangtze River. Operating in Dacheng, China—the recognized capital of green building materials—our team merges advanced R&D with modern industrial manufacturing.
Our commitment to quality, environmental safety, and energy efficiency guides our operations. From raw chemical formulation to continuous extrusion, vulcanization, and foaming, we deliver high-performance insulation solutions supported by clear technical documentation and tracking.
High-capacity automated manufacturing lines ensure consistent product quality and reliable global supply.
Kingflex runs 5 large automatic assembly lines, generating an annual output exceeding 600,000 cubic meters. This scale allows us to easily supply large commercial construction sites, municipal district energy grids, and massive petrochemical complexes.
Our raw material mixing and extrusion systems use automated controls to ensure consistent density and cell structure. Continuous vulcanization under electronic temperature controls creates a uniform closed-cell structure (exceeding 98% closed cells), which is critical for consistent thermal performance.
Detailed physical properties for engineering calculations and spec compliance.
| Material Type | NBR / PVC Elastomeric Foam | Rock Wool / Mineral Wool |
|---|---|---|
| Standard Thicknesses | 6mm to 50mm (Includes 30mm) | 25mm to 100mm |
| Density Range | 40 - 55 kg/m³ | 80 - 150 kg/m³ |
| Service Temp. Range | -40℃ to +105℃ | Up to +650℃ |
| Closed-Cell Rate | > 98% | Open fiber matrix (needs jacket) |
| Thermal Conductivity ($\lambda$) | $\le 0.034 \text{ W/(m}\cdot\text{K)}$ at $0^\circ\text{C}$ | $\approx 0.040 \text{ W/(m}\cdot\text{K)}$ at $25^\circ\text{C}$ |
| Moisture Resistance | High resistance factor ($\mu \ge 10,000$) | Low resistance (hydrophilic) |
| Compression Resilience | Over 80% recovery rate | Low resilience (prone to deformation) |
Our sheet rolls are optimized for large-diameter ducts, tanks, and irregular fittings. With thicknesses ranging from 6mm up to 50mm, they offer robust acoustics and thermal shielding.
Our pre-formed pipe sections feature standard inner diameters (ID) from 6mm to 114mm and wall thicknesses from 9mm to 40mm. They are designed for quick installation on copper and iron pipes.
Every batch of Kingflex NBR/PVC undergoes thorough testing in our laboratory before dispatch. We measure cell structures, verify flame retardance index limits, check elasticity parameters, and test under humidity conditions to ensure the product meets standard performance metrics.
Our products comply with major global building codes. They have passed testing requirements for BS 476, CE, REACH, ROHS, UL94, and ASTM. This guarantees compliance for demanding projects in Europe, the Middle East, the Americas, and Southeast Asia.
Engineered to perform across demanding commercial, industrial, and transport applications.
Used to insulate chilled water pipes, hot water lines, and ventilation ducts. It stops condensation on the surface and reduces system thermal losses, keeping HVAC units running efficiently.
For chemical transport lines and ultra-low temperature storage, Kingflex cryogenic rubber foam handles extreme sub-zero shifts without cracking, preventing ice buildup.
Ensures stable processes in factories, energy stations, and chemical plants. It keeps heat contained within high-temperature pipelines, reducing energy waste and lowering emissions.
Installed around interior drainage, wastewater pipes, and wall cavities. Its structural flexibility absorbs mechanical vibrations, reducing airborne noise in high-density buildings.
Specially developed to resist vibrations and salty environments. It provides fire-safe, smoke-retardant thermal insulation for ships, train carriages, and subways.
Protects outdoor glycol-filled lines and heat-exchange loops from weather exposure. It prevents heat loss at night and stands up to direct sunlight.
Transparent communication, quick response, and quality tracking define our client relationships.
Our sales team works directly with engineers and purchasers around the world. We offer comprehensive services, including technical consultation, customized dimension runs, logistics tracking, and on-site assembly guidance.
We keep detailed records of customer requests and support. This helps us ensure that final dimensions, shipping times, and packaging fit our clients' project timelines.
Answers to key technical and procurement questions about NBR/PVC elastomeric foam products.
Select from our range of flexible pipe coverings, high-performance slabs, and low-temperature thermal wraps.
Optimized NBR configurations, specialized tubes, and high-temp mineral board products.
Flexible closed-cell pipe sleeve, engineered to resist thermal loss and prevent surface condensation.
Enhanced barrier design protects metal piping systems from Corrosion Under Insulation (CUI).
Highly flexible insulation sleeve for quick installation around complex piping layouts.
Industrial standard NBR/PVC pipe covers, designed for reliable thermal containment.
Durable elastomeric tubing for cold water lines, cooling systems, and air conditioning pipes.
Optimized for commercial ventilation projects, heat loops, and split AC systems.
Complete system solution designed for high performance under shifting thermal conditions.
Specially formulated to handle extreme sub-zero conditions in liquid gas lines.
Maintains thermal resistance under condensation-prone conditions in chemical plants.
Specialized low-temperature protection for liquefied gas pipes and cold storage equipment.
High-density mineral wool boards, optimized for high-temperature and structural fire barriers.
Flexible mineral wool blankets, designed for high-temperature industrial pipelines and tanks.
