Kingflex
In high-capacity HVAC/R installations, the selection of raw materials determines long-term thermal efficiency, structural integrity, and operational safety. Air conditioning copper pipes function as the circulatory veins of refrigerant systems. However, without premium-grade elastomeric insulation wrapping, these copper systems run high risks of extreme thermal dissipation, surface condensation, structural corrosion, and premature mechanical breakdown.
Kingflex Insulation Co., Ltd. fills this safety gap by producing high-density, closed-cell nitrile-butadiene rubber (NBR) and polyvinyl chloride (PVC) elastomeric structures. Specifically engineered to protect copper line sets in split air conditioners, VRF systems, chiller units, and industrial cold loops, our material systems ensure minimal energy transmission losses while preventing structural moisture ingress.
Features a thermal conductivity rating (λ) of ≤ 0.034 W/(m·K) at 0°C, offering outstanding heat-retention and anti-freezing behavior in extreme applications.
Maintains a high moisture resistance factor (μ ≥ 10,000), eliminating the need for separate vapor barriers, avoiding mold growth, and eliminating the risk of piping corrosion.
Dacheng, China is globally recognized as the premier manufacturing capital for energy-saving green building materials. Because of this geographic concentration, raw materials such as raw nitrile, polymers, blowing agents, and specialized additives are sourced locally. This localized supply network stabilizes pricing and mitigates international logistics and material volatility, allowing us to pass significant cost savings down to wholesale buyers.
Our facility runs five large, fully-automated continuous extrusion assembly lines. Precision instrumentation monitors chemical reaction profiles, temperature ranges, and foaming rates in real-time. This dynamic automation creates a closed-cell micro-structure with uniform cell size, resulting in a consistent density of 40–55 kg/m³ and exceptional dimensional stability. This ensures easy sleeve application over standard air conditioner copper lines.
Every product batch undergoes testing protocols to verify density, thermal performance, and flame-retardant characteristics. Full serial tracking connects every finished sheet roll or tube back to its raw material source. Operating under international standards including BS 476, CE, REACH, RoHS, UL94, and ASTM, Chinese export facilities provide the compliance documentation required by engineering procurement departments across North America, Europe, and Asia.
Our sheet insulation is engineered for large-diameter copper cooling manifolds, air conditioning air handlers, and duct structures where pre-formed pipes cannot be installed. Features a resilient closed-cell structure with a clean, sleek appearance that does not require additional paint or protective coats in interior areas.
| Parameter | Technical Value |
|---|---|
| Material formulation | Premium Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) Blend |
| Thickness Options | 6mm, 9mm, 13mm, 15mm, 19mm, 25mm, 32mm, 40mm, 50mm |
| Nominal Density | 40 to 55 kg/m³ |
| Temperature Range | -40℃ to 105℃ (Suitable for both chilled water & high-temp lines) |
| Thermal Conductivity | ≤ 0.034 W/m·K at 0℃ |
| Fire Safety Rating | Flame Retardant, Self-extinguishing, meeting BS 476 Part 6 & 7 Class 0/1 |
Pre-extruded elastomeric tubes matching standard copper pipe outside diameters. The smooth inner core slides onto lines during system assembly, or can be slit longitudinally and sealed using Kingflex specialized contact adhesives.
| Parameter | Technical Value |
|---|---|
| Material formulation | NBR/PVC Flexible Closed-Cell Elastomer |
| Wall Thickness | 9mm, 13mm, 19mm, 25mm, 32mm, 40mm |
| Inner Diameter (ID) Range | 6mm to 114mm (Matches copper pipes from 1/4" up to 4-1/2") |
| Compression Resilience | Over 80% recovery after localized loading |
| Moisture Resistance Factor | μ ≥ 10,000 (Prevents pipe condensation in humid climates) |
| Product Traceability | Fully documented production code on each tube/packaging unit |
Air conditioning units installed in coastal resorts, maritime structures, and offshore drilling platforms face high humidity and salt spray. Unprotected copper piping degrades rapidly via galvanic oxidation. Kingflex closed-cell NBR insulation acts as a physical shield, blocking corrosive saline moisture from contacting the metal surface. Its low water absorption prevents moisture collection, safeguarding the line set throughout its lifespan.
Industrial cold-chain logistics, laboratory cooling chambers, and medical storage systems run refrigerant loops at temperatures below -40°C. Standard thermal insulation can turn brittle and crack under extreme cold. Kingflex Cryogenic elastomeric formulations maintain flexibility and structural integrity in low-temperature setups, preventing thermal shocks and ice buildup on critical lines.
Modern office complexes, shopping centers, and hospitals use extensive VRF (Variable Refrigerant Flow) networks. Piping traverses wall cavities, ceilings, and occupied zones, making flame spread prevention and low smoke toxicity crucial. Our fire-retardant nitrile foam options satisfy fire safety regulations, helping projects earn green building certifications while reducing noise transmission through walls.
Established under the Jinwei Group, which holds a manufacturing history of over 40 years since its inception in 1979, Kingflex has grown to become the first manufacturer of thermal insulation materials north of the Yangtze River. We supply comprehensive energy-saving insulation systems globally, providing engineered solutions for commercial HVAC systems, acoustic dampening, and industrial cold-conservation applications.
Our team includes 8 dedicated R&D engineers, 6 experienced international sales associates, and 230 skilled production professionals. We operate five advanced automated assembly lines, achieving an annual capacity of over 600,000 cubic meters. This scale enables us to serve as a key partner for national ministries, petrochemical plants, and global distributors.
Kingflex insulation products are certified for import and installation in demanding regulatory zones. Our materials undergo regular testing for flame spread index, smoke development, thermal decay, and chemical emissions.
We hold certifications from BS 476, CE, REACH, RoHS, UL94, and ASTM. This compliance portfolio ensures seamless approval processes for design engineers, local safety inspectors, and procurement teams during project submittals.
Our insulation materials are selected for critical roles across high-profile project typologies:
It is primarily used to isolate HVAC ducts, air conditioning lines, structural water pipes, and refrigeration units. It provides thermal barrier protection, prevents condensation, mitigates pipe freezing risks, and dampens acoustics across commercial, industrial, and residential projects.
Yes. Our insulation materials meet international fire safety regulations. They feature high flame-retardant properties, low smoke emission rates, and self-extinguishing capabilities that comply with BS 476 Part 6 & 7, UL94, and other local standards.
Rubber foam is a flexible, closed-cell, elastomer-based system with built-in moisture resistance, making it ideal for HVAC, chilled water piping, and condensation prevention. Rock wool is a fibrous mineral structure that handles high operating temperatures, making it suited for high-heat steam pipes and heavy industrial firewalls.
Yes. We support custom orders, allowing you to specify thicknesses, interior diameters, color configurations, and self-adhesive backings to match exact project design specifications.
Our manufacturing and product lines are certified to meet BS 476, CE, REACH, RoHS, UL94, ASTM, and ISO 9001 quality guidelines, simplifying compliance and quality approvals.
Yes. Every batch has a designated tracking code printed on the shipping packages and recorded in our warehouse database, ensuring full quality control and traceability.
We supply insulation rolls in standard thicknesses from 6mm to 50mm, matching diverse thermal and anti-condensation requirements.
Installed correctly and shielded from direct environmental weather, our elastomer systems provide a reliable service life of 10 to 15 years, reducing maintenance costs.
