Kingflex
Explore our core range of elastomeric, fireproof, and sound-absorbing insulation sheets and tubes developed for rigorous industrial specifications.
Analyzing critical ecological mandates, technical benchmarks, and flame-retardant chemistry behind halogen-free systems.
Traditional elastomeric insulation depends heavily on halogenated retardants (chlorine, bromine). In fire conditions, these materials release dense, highly toxic gases (hydrochloric or hydrobromic acid). Halogen-free alternatives prevent toxic smoke generation, safeguarding human life in confined environments.
Acidic gases emitted by burning halogens react with humidity to form corrosive acids, threatening electronic hardware and structural metal. In data centers, control rooms, and marine vessels, halogen-free systems protect high-value infrastructure from corrosive damage.
Global architectural standards (LEED, BREEAM) reward the elimination of persistent organic pollutants. By selecting non-halogenated systems, projects guarantee structural alignment with RoHS, REACH, and blue economy requirements.
Halogen-Free Elastomeric Foam (HF-NBR) represents a milestone in material science. By integrating phosphorus-nitrogen synergy agents and specialized metal hydroxides, the insulation achieves superior fire retardancy without toxic compromises.
| Technical Property | Standard Elastomeric Insulation (NBR/PVC) | Halogen-Free Elastomeric Insulation (HF-NBR) | Engineering Implication |
|---|---|---|---|
| Halogen Content | Typically contains Chlorine & Bromine (>10%) | Undetectable (<0.05% compliance) | Zero toxic acidic gas emission in fires |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.036 W/(m·K) at 0°C | Maintains outstanding thermal barriers and HVAC energy savings |
| Water Vapor Resistance (μ) | ≥ 10,000 | ≥ 7,000 | Closed-cell composition prevents moisture intrusion and pipe decay |
| Fire Performance Ratings | Class 0 (BS 476 Pt 6/7) / V-0 (UL94) | Class 1 / V-0 / EN 13501 (s2, d0) | Provides superb fire suppression with minimum smoke density |
| Operating Temperature | -50°C to +105°C | -50°C to +105°C | Extremely versatile, from chilled water loops to steam systems |
Modern global logistics require manufacturers to deliver high product traceability, rapid production scalability, and strict international compliance. Procurement teams across Europe, North America, and Southeast Asia must scrutinize material composition certifications (like RoHS and REACH test reports from certified third parties like SGS or TÜV) to avoid regulatory delays. Partnering with professional suppliers like Kingflex guarantees reliable access to premium raw materials and high-capacity automatic extrusion lines.
Kingflex Insulation Co., Ltd. is a premier manufacturing and trading combo specializing in thermal insulation products. Located in Dacheng, China—the globally recognized capital of green-building materials—Kingflex stands as an energy-saving, environmentally responsible enterprise.
By integrating professional research, advanced manufacturing, and strategic sales networks, Kingflex delivers custom insulation solutions. From initial energy-saving consultations and material design to on-site installation guidance and dedicated post-sale support, we guide the path for next-generation insulation systems.
Our History: Established by Jinwei Group (founded in 1979), Kingflex carries over 40 years of pioneering history. We proud ourselves as the first manufacturer of thermal insulation materials north of the Yangtze River.
Supplying global clients with complete, high-capacity, energy-saving insulation systems.
Kingflex is a designated production enterprise certified by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry. We provide integrated solutions for thermal insulation, cold insulation, and acoustic attenuation.
Our team comprises 8 dedicated R&D specialists, 6 international market consultants, and over 230 skilled production workers working under unified safety protocols. This enables us to maintain a stable closed-cell rate exceeding 98% in our elastomeric products.
Continuous testing, state-of-the-art laboratory analysis, and verifiable safety certification.
We focus heavily on materials research to replace traditional halogen agents with eco-friendly alternatives. Our laboratory constantly tests raw elastomer formulas for smoke density, mechanical resilience, and long-term thermal conductivity. We guarantee complete batch traceability across all production runs.
Our manufacturing processes and finished products comply with major global safety and environment systems. Kingflex products have passed BS 476, CE, REACH, RoHS, UL94, and ASTM certifications.
We believe that combined expertise drives true innovation. Our sales, logistics, and engineering departments work in unison to provide seamless customer journeys. Whether drafting custom thickness solutions (from 6mm to 50mm) or handling regional shipping documentation, our personnel ensure absolute professional integrity.
We supply critical thermal systems across the globe. Our clients praise our consistent thickness control, robust packaging, and punctual deliveries. Below are real screenshots documenting successful client communications.
A track record of high-performance installations across commercial buildings, transportation networks, and extreme low-temperature cryogenic systems.
Material: NBR/PVC blend (Halogen-free variations available)
Thickness: 6mm - 50mm
Density: 40 - 55 kg/m³
Service Temp: -40°C to 105°C
Advantage: Evens and foams fully, closed-cell rate exceeds 98%, compression resilience over 80%, flame retardant and self-extinguishing. Low thermal conductivity and high moisture resistance.
Material: NBR/PVC blend (Halogen-free variations available)
Thickness: 9mm - 40mm
Inner Diameter (ID): 6mm - 114mm
Density: 40 - 55 kg/m³
Advantage: Even coating sprayed with professional equipment. Closed-cell structure cuts freezing and cracking risks on complex pipe runs.
A strategic vision for carbon neutrality, clean polymer formulations, and circular design.
Developing bio-sourced elastomeric matrices derived from non-food agricultural waste, reducing petrochemical raw materials by 35% while maintaining closed-cell structure and low thermal conductivity.
Scaling up synthetic magnesium hydroxide and aluminum trihydroxide (ATH) hybrid synergists to achieve UL94 V-0 flame ratings with zero halogen content, and an unprecedented smoke density index (Ds < 50).
Transitioning elastomeric chemical compounds to cross-linked structures that can be thermal-mechanically recycled back into building acoustic barriers, achieving circular economy integration.
Comprehensive technical guidance from our R&D department to assist procurement managers and HVAC engineers.
A1: It is primarily used for insulating HVAC ducts, air conditioning pipes, building thermal envelopes, industrial process pipelines (both chilled and hot), and for noise reduction in mechanical equipment rooms.
A2: Yes. Our products are engineered to be highly fire retardant, meeting strict safety standards including BS 476 Part 6 & 7 (Class 0), UL94 (V-0 rating), and EN 13501 (Class B-s3, d0 or better). They prevent flame spread and self-extinguish when fire exposure stops.
A3: Rubber foam is a flexible, closed-cell, moisture-proof material suitable for condensation control on chilled lines, HVAC systems, and acoustic barrier installations. Rock wool is a fibrous material with high temperature resistance, making it ideal for high-heat industrial steam lines and heavy structural fireproofing, but it requires an external vapor barrier to prevent moisture absorption.
A4: Yes. We offer comprehensive OEM/ODM services. We can adjust the product density, color, inner diameter (ID), thickness (6mm to 50mm), and add custom backing glues or protective outer skins (such as aluminum foil or fiberglass fabrics) to meet project specifications.
A5: Kingflex products are certified to comply with major international requirements, including BS 476, CE, REACH, RoHS, UL94, and ASTM. This ensures compliance when importing into Europe, the Americas, and the Asia-Pacific region.
A6: Yes, all Kingflex shipments carry strict batch and lot numbers printed on the packaging or material edges. This allows our QC department to trace raw materials, production times, and laboratory testing files for every shipment.
A7: For sheet rolls, we can manufacture thicknesses from 6mm up to 50mm. For insulation pipes, our standard thicknesses range from 9mm to 40mm, with inner diameters (ID) from 6mm to 114mm.
A8: When installed according to professional guidelines in typical indoor or protected outdoor environments, our insulation has a service life of 10 to 15 years.
A9: Green buildings (LEED/BREEAM) and marine vessels require halogen-free materials to eliminate toxicity hazards. Halogen-free foam (such as HF-NBR) does not emit toxic chlorine or bromine gases during fire combustion. This protects building occupants from inhalation hazards and sensitive electrical equipment from corrosion.
A10: High moisture permeance leads to water absorption, which increases thermal conductivity and causes Corrosion Under Insulation (CUI). Kingflex's closed-cell rate (>98%) creates a built-in vapor barrier (high μ-value), maintaining thermal efficiency over the system's lifespan.
Explore our targeted industrial line, including cryogenic, acoustic, and aluminum-foil-laminated insulation systems.
We supply a diverse range of insulation sheets, rolls, and pre-formed tubes to meet various acoustic, thermal, and chemical challenges. Here is an overview of our main categories and structural configurations:
Highly flexible closed-cell tube designed to insulate HVAC, cooling lines, and solar thermal piping systems against condensation and thermal loss.
Formulated to resist acid, alkali, and chemical fumes, making it ideal for processing lines in petrochemical and pharmaceutical facilities.
Designed with high elasticity for fast installations on complex piping systems, T-joints, and valves with minimal seams.
The industry standard for HVAC refrigeration lines, offering low thermal conductivity and stable insulation efficiency.
Standard open/closed hybrid formulation optimized for structural sound absorption and mid-range thermal insulation.
Pre-sized for standard copper HVAC pipe systems, providing UV and moisture resistance in split system connections.
Comprehensive industrial insulation kits containing specialized glues, tapes, and pre-cut fittings for complete thermal protection.
Multi-layered composite structures engineered for extreme low temperature systems down to -200°C. Protects LNG and liquid oxygen pipelines.
Specially formulated for high thermal expansion/contraction resistance on cryogenic fluid transport lines.
High-density cryogenic barrier system providing mechanical protection and resistance to thermal shock in cold processing loops.
High-density stone wool board designed for high-temperature thermal barriers, furnace linings, and commercial fireproofing.
Flexible structural rock wool blanket reinforced with wire mesh for thermal shielding of large industrial boilers and process tanks.
