Kingflex
Kingflex Insulation Co., Ltd. is a leading professional manufacturer and exporter of premier thermal insulation systems. Headquartered in Dacheng, China—historically celebrated as the capital of green-building materials—we operate an integrated enterprise encompassing advanced research and development, smart manufacturing, and international commerce.
Under the aegis of the renowned Jinwei Group, established in 1979 with over 40 years of pioneering history, Kingflex became the first manufacturer of thermal insulation materials north of the Yangtze River. Today, our engineering team includes 8 dedicated R&D scientists, 6 international customer support experts, and a production workforce of over 230 technicians.
We provide localized solutions through direct consultations, bespoke configuration design, rigorous testing protocols, and complete after-sales lifecycle support. Our mission remains: to drive the architectural and industrial sectors toward carbon neutrality.
Every climate zone demands custom insulation performance parameters. Kingflex elastomeric closed-cell foam is engineered to satisfy global regulatory frameworks and physical regional challenges.
Engineered to meet ASTM C534 specifications for flexible cellular elastomeric insulation. Outfitted for strict ASHRAE 90.1 energy performance requirements and certified to clear localized flame/smoke standards (25/50 ASTM E84 ratings) for commercial plenum installations.
CE marked and fully compliant with EN 14304 requirements. Meets stringent European fire protection ratings (Class B-s3, d0 according to EN 13501-1). Zero halogen components prevent acid gas emission during fires in high-occupancy environments.
Specifically engineered for climates in the Middle East and Southeast Asia. Features a built-in vapor barrier factor (μ ≥ 10,000) that prevents thermal bridging, condensation, and corrosion under insulation (CUI) even in 95% relative humidity environments.
Kingflex insulation utilizes a closed-cell NBR/PVC polymer blend, featuring millions of microscopic, independent gas pockets. This layout creates an exceptionally low thermal conductivity ($\lambda$) profile and an inherent resistance to water vapor migration. Because the vapor barrier is distributed throughout the entire thickness, localized surface tears do not compromise the insulation properties.
| Physical Parameter | Standard Specification Value |
|---|---|
| Material Base | Synthetic Elastomeric Rubber (NBR/PVC blend) |
| Density Range | 40 - 55 kg/m³ |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.038 W/(m·K) at 40°C |
| Vapor Permeability (μ) | ≥ 10,000 (Built-in Vapor Barrier) |
| Working Temp. Range | -40°C to +105°C (-40°F to 221°F) |
| Fire Resistance Ratings | Class 0 / Class 1 BS 476, UL94 V-0, ASTM C534 |
| Environmental Compliance | REACH, RoHS, Zero ODP, Low VOC emissions |
| Water Absorption | ≤ 0.2% by volume |
*Custom dimensions ranging from 6mm to 50mm thickness, with ID sizing from 6mm to 114mm for pipe configurations are fully customizable via OEM contracts.
In the global market, pricing predictability, material supply reliability, and bulk capacity determine project completion rates. Kingflex operates out of Hebei Dacheng, utilizing regional upstream supply integration that grants raw material stability and insulation cost controls.
Equipped with 5 high-speed, fully automated extrusion and foaming lines, we maintain an annual throughput exceeding 600,000 cubic meters. This allows us to fulfill major regional infrastructure projects without manufacturing backlogs.
Every single batch undergoes quality control testing—from raw rubber inspection to automated density and dimensions scanning. Traceable batch numbers are printed on all products, guaranteeing accountability for project owners, engineers, and distributors.
Located near the major industrial shipping hub of Tianjin Port, Kingflex handles cargo with expedited freight routes, keeping international lead times minimal and transport costs highly competitive.
Kingflex is continuously evolving to support next-generation thermal systems. Our engineering path focuses on three core pillars:
Developing ultra-thin, high-performance elastomeric blankets infused with silica aerogels. This achieves a thermal conductivity value below 0.028 W/(m·K), drastically cutting material thickness requirements for space-confined retrofits.
Transitioning from fossil-derived rubbers to bio-based and recycled polymer compounds, shrinking the embodied carbon footprint of new commercial installations while maintaining flame-retardant performance.
Formulating NBR/PVC structures with advanced mineral flame-retardant systems, aiming to completely phase out halogenated organic additives to meet high-tier green building credentials (LEED, BREEAM).
Approved for deployment in civil, defense, petrochemical, and commercial projects. Our materials have cleared international audits, proving their compliance and consistency.
Transparent client communications reflect our commitment to performance, custom engineering, and timely order fulfillment.
A1: Kingflex closed-cell rubber foam insulation is engineered for HVAC duct systems, residential and commercial air conditioning piping, industrial hot and cold process piping, maritime installations, and structural sound insulation. Its closed-cell geometry prevents thermal bridging and condensation in high-temperature differences.
A2: Our rubber foam insulation compound includes active flame-retardant additives. It is fully self-extinguishing off fire and passes major safety certifications, including Class 0 & Class 1 (BS 476 Part 6 & 7), UL94 V-0 flame rating, and ASTM C534 standards, making it safe for commercial plenum environments.
A3: Elastomeric rubber foam is highly flexible, features a closed-cell structural vapor barrier, and excels in sub-ambient or highly humid systems by preventing water vapor intrusion. Rock wool is a rigid fibrous mineral insulation suited for extreme high-temperature industrial pipelines and high-heat fire protection, but requires an external vapor jacket to prevent moisture absorbency.
A4: Yes, we provide OEM customization, allowing clients to configure custom wall thicknesses (from 6mm to 50mm), inner diameters for copper or steel pipes (from 6mm up to 114mm), custom foil facers (including plain, reinforced, or colored aluminum foil), and pressure-sensitive adhesive backings.
A5: Kingflex products are manufactured under ISO quality systems, and carry CE certificates, REACH chemical safety compliance, RoHS restriction of hazardous substances, BS 476, UL94, and ASTM performance testing approvals. This permits integration into projects throughout Europe, North America, the Middle East, and Asia.
A6: Yes, all shipments have batch number traceability. From raw materials selection through inline laser thickness monitoring to final staging, each production run is logged in our quality assurance database for accountability.
A7: Under standard indoor HVAC installations and when installed with Kingflex thermal insulation glue 520, the typical service life ranges between 10 to 15 years. Outdoor installations require UV-protective coatings or cladding to reach maximum service life.
