Kingflex
Explore our elite selection of closed-cell elastomeric tubes, sheets, and system accessories designed for ultra-low and ambient temperature controls.
Kingflex Insulation Co., Ltd. is a leading professional manufacturing and trading combo for thermal and cryogenic insulation products. Strategically headquartered in Dacheng, China—widely recognized as the national capital of green-building materials—we operate as an energy-saving, environmentally conscious enterprise that seamlessly integrates R&D, manufacturing, global sales, and post-installation technical guidance.
Established by the prestigious Jinwei Group (founded in 1979), Kingflex inherits over 40 years of pioneering technical lineage. As the first major manufacturer of thermal insulation materials north of the Yangtze River, our operations are optimized to reduce global carbon footprints through industrial energy-conservation systems.
Industrial-grade protocols to guarantee zero condensation, optimized thermal barrier performance, and prolonged pipeline lifespan.
Improper installation of NBR/PVC elastomeric rubber foam accounts for over 85% of premature insulation failures, leading to moisture ingress, corrosion under insulation (CUI), and severe energy loss. Our specialized field guide outlines structural preparation and step-by-step methodologies to maintain vapor-tight integrity.
Ensure the mechanical piping is clean, dry, and free of dirt, rust, or oils. Match the inner diameter (ID) of the Kingflex tube accurately to the pipe's outer diameter to prevent internal air voids that facilitate condensation.
When pre-formed tubes cannot be slid onto open piping, slit the tube longitudinally using a sharp knife. Apply a thin, even layer of Kingflex Adhesive 520 on both cut edges. Allow the adhesive to become tacky to the touch (approx. 3-8 minutes depending on humidity).
Press the slit edges firmly together starting from the ends and moving inward. Apply firm, localized pressure along the entire seam line to create a vapor-proof, molecular bond. Do not pull or stretch the elastomeric material during joint construction.
Cut miter joints directly from the insulation tube utilizing templates for 90° elbows, 45° bends, and T-joints. Clean-cut faces must be fully adhered to seal off ambient air infiltration completely.
| Property Parameter | NBR/PVC Sheets & Rolls Specifications | NBR/PVC Pre-formed Pipe Tubing |
|---|---|---|
| Material Composition | Premium Nitrile-Butadiene Rubber (NBR) & Polyvinyl Chloride (PVC) | Premium Nitrile-Butadiene Rubber (NBR) & Polyvinyl Chloride (PVC) |
| Thickness Range | 6 mm to 50 mm | 9 mm to 40 mm |
| Internal Diameter (ID) | N/A (Flat sheet/roll form) | 6 mm to 114 mm |
| Density Profile | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to 105℃ (Ultra-low/Cryogenic options available) | -40℃ to 105℃ (Cryogenic ranges supported) |
| Closed-Cell Rate | > 98% even micro-cellular foam distribution | > 98% cell uniformity with integrated skin barrier |
| Fire Safety Compliance | Class 0, Class 1 (BS 476 Part 7/6), UL94 V-0, ASTM E84 | BS 476, UL94, DIN 4102 B1, GB 8624 |
The Kingflex engineering lab houses 8 senior research specialists focusing on polymers, structural thermodynamics, and acoustic barriers. Our mission focuses on expanding insulation lifetimes and lowering thermal conductivity (λ ≤ 0.034 W/m·K at 0°C).
All manufactured batches undergo automated testing protocols verifying fire retardance, water vapor transmission resistance (μ ≥ 10,000), and density stabilization.
How next-generation materials science is driving energy efficiency and system performance.
By molecularly doping elastomeric NBR polymers with silica aerogels, we aim to reduce thermal conductivity down to 0.024 W/m·K. This enables thinner walls while doubling insulation capacity, conserving space in cramped utility ducts.
Our upcoming product lines focus entirely on eco-safe, halogen-free, and low-smoke non-toxic formulations. This ensures compliance with stringent green building certifications globally, reducing toxins during high-temperature exposures.
We are developing "Smart Insulation" systems featuring micro-sensors embedded in the outer protective skin. This permits real-time detection of moisture levels, preventing corrosion under insulation (CUI) without removing protective wraps.
Adapting closed-cell technologies for specific mechanical and structural environments.
For high-frequency air circulation systems, our elastomeric solutions emit zero particulate matter or fiber dust. This satisfies the demanding particulate containment standards of commercial hospitals, surgical units, and cleanrooms.
Chemical processing lines experience aggressive heat cycles. We supply dual-layer systems utilizing rock wool primary insulation wrapped in an elastomeric vapor-proof shell to survive severe temperature variations.
For liquefied gas processing (-196°C to -40°C), our Dolefin Flexible Cryogenic Insulation resists cracking under thermal stress. The system relies on multi-layer configurations with specialized adhesive to prevent gas leaks.
Kingflex utilizes five fully automated manufacturing lines optimized via IoT controllers. From precise compound dosing of raw rubber monomers to real-time temperature-regulated vulcanization tunnels, automation guarantees consistent density profiles and cell structure.
Located in the industrial hub of Dacheng, we benefit from strong raw material partnerships and direct access to major maritime transport hubs (Tianjin Port). This reduces transit delays, maintains a steady supply chain, and minimizes costs for global wholesale partners.
With a massive warehouse footprint and 600,000 cubic meters of annual output, we easily fulfill heavy commercial orders for multi-phase infrastructure systems.
Verified installations of Kingflex elastomeric systems in civil and heavy industries.
Direct feedback and technical communications with international consultants confirming project specifications.
Kingflex materials are specified in premier properties, pharmaceutical factories, and high-rise commercial structures. The photos to the right illustrate the clean alignment and smooth aesthetics of properly installed elastomeric tubes and sheet covers.
Technical comparison and structural profiles for Kingflex elastomeric systems.
Dimension Profile: Thicknesses range from 6mm to 50mm. The natural density measures between 40-55kg/m³, with an operating temperature window of -40℃ to 105℃.
Key Advantages: Uniform micro-cell distribution (closed-cell rate >98%), stable moisture resistance factor, compression resilience rating >80%, self-extinguishing fire response.
Common Applications: HVAC air ducts, building wall/basement panels, large industrial storage tanks, and rail transit carriage thermal wraps.
Dimension Profile: Thicknesses span 9mm to 40mm, with internal diameters (ID) matching standard line sizes from 6mm to 114mm.
Key Advantages: Extruded skin barrier, automated spray-applied inner slip coating, resilient thermal buffer, zero moisture permeability, and high resistance to line cracking.
Common Applications: Chilled water loops, condensate lines, building water supply frost protection, process hot-water piping, and cryogenic industrial pipe insulation.
Expert technical support clarifying material capabilities, chemical resistance, and logistics.
Explore the automated manufacturing floor, quality control labs, and support teams.
Extrusion lines shaping NBR compounds into continuous tubes before entering vulcanization tunnels.
Automated cutting machines sizing pre-formed pipe insulation to standard lengths.
Each product batch undergoes density and wall-thickness tolerance testing.
Order directly from our factory lines. Rapid lead times, volume discounts, and global freight support.
