Kingflex
Direct from our manufacturing facility—precision-engineered elastomeric, closed-cell materials designed to resolve sound attenuation and thermal control challenges.
Modern noise control solutions require a comprehensive understanding of polymer physics and acoustic wave attenuation. In industrial facilities, HVAC mechanical rooms, and civil construction setups, sound propagates through both airborne paths and structural vibration pathways. High-density elastomeric rubber foam insulation plays a critical role in addressing these paths by offering dual-function capabilities: sound absorption and structural damping.
Our research and development departments leverage NBR/PVC matrix polymerization to control the distribution and size of the foam cells. Closed-cell configurations act as a thermal barrier and prevent moisture absorption, while open-cell and semi-open structures are optimized to capture and dissipate high-frequency noise within the porous matrix. Sound energy enters the elastomeric structure, causing localized friction within the polymer chains, which effectively converts acoustic waves into harmless, low-grade thermal energy.
Looking Toward the Future: The next generation of acoustic barriers focuses on smart, multi-layered composites. By combining elastomer matrices with high-mass sound barriers (such as mass-loaded vinyl) or micro-perforated foils, we are achieving higher Sound Transmission Class (STC) ratings with thinner materials. This evolution is essential for space-constrained applications like railway transit corridors, defense, aerospace, and high-performance cleanroom enclosures.
Kingflex Insulation Co., Ltd. operates as a specialized manufacturing and trading combo for high-performance thermal and acoustic insulation systems. Located in Dacheng, China—a well-known capital of green building materials—our facility focuses on research and development, manufacturing, and global sales. Our operational core is built around energy conservation and consumption reduction, helping to guide advancements in global building materials.
We work closely with engineering consultants, architectural specifiers, and procurement managers to deliver customized solutions. From the consulting stage and custom formula development to manufacturing, on-site installation guidance, and post-sale technical support, we help ensure your project’s thermal and acoustic requirements are met.
Corporate History & Growth: Kingflex was established by the Jinwei Group, which brings over 40 years of manufacturing experience. Founded in 1979, the group was the first major manufacturer of thermal insulation materials north of the Yangtze River, paving the way for decades of polymer science innovation.
Review our standard sizing, density, thermal limits, and acoustic characteristics designed for HVAC systems, piping, and industrial complexes.
| Material Base | NBR/PVC Elastomeric Polymer Blend |
| Available Thickness | 6mm to 50mm |
| Density Range | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to 105℃ |
| Closed-Cell Ratio | > 98% for consistent thermal and moisture barrier performance |
| Compression Resilience | Over 80% recovery under standard compression cycles |
| Fire Safety Rating | Flame retardant, self-extinguishing upon source removal |
| Material Base | NBR/PVC Elastomeric Polymeric Matrix |
| Inner Diameter (ID) | 6mm to 114mm |
| Wall Thickness | 9mm to 40mm |
| Density Range | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to 105℃ |
| Moisture Resistance | High moisture resistance factor (µ ≥ 7,000) |
| Coating Process | Automated, uniform continuous pipe extrusion |
From deep cryogenics to large commercial HVAC infrastructure, explore how our material configurations solve specific environmental challenges.
In modern multi-story buildings, hospitals, and hotels, the air distribution system can serve as a conduit for noise. Air handlers, chillers, and fast-flowing air generate structural and airborne vibrations. Utilizing our elastomeric foam inside ventilation ducts and wrapping chilled water pipe networks serves a dual purpose: preventing condensation and reducing fan and motor hum throughout the ductwork.
In chemical and refining operations, pipelines carry gases and fluids under high pressure. These conditions can cause acoustic fatigue, which may damage welds or structural components. By applying our high-density NBR/PVC insulation, operators establish a viscoelastic barrier that dampens high-frequency flow noise and protects the system from corrosion under insulation (CUI).
At ultra-low temperatures, standard insulation materials can become brittle and fracture. Our cryogenic rubber foam formulation remains flexible down to temperature thresholds, preventing cracking and managing heat-leak rates. This flexibility helps protect critical components in LNG infrastructure, cold chain facilities, and deep-freeze logistics networks.
Vehicles, train compartments, and motor enclosures generate continuous low-frequency vibrations. Applying our sound-absorbing sheets to structural panels dampens surface resonance, lowering decibel levels within the passenger cabin or operator station.
How we utilize advanced process automation and strategic regional sourcing to optimize production and manage lead times.
Our manufacturing complex features 5 continuous automated assembly lines capable of producing over 600,000 cubic meters of insulation materials annually. Automation helps maintain uniform density, cell structure, and fire performance throughout production, reducing variation between batches.
By integrating our quality management systems directly with major chemical suppliers in China, we secure consistent raw materials even during market fluctuations. Our team includes 8 professional R&D engineers, 6 international customer service leads, and over 230 technicians on the production floor, working to align output with global standards.
As a designated supplier for major energy, power generation, and chemical projects, Kingflex adheres to rigorous inspection and batch-traceability standards. Each production run is cataloged, and raw materials are tracked from arrival to delivery, helping to ensure compliance with project specifications.
Our materials undergo third-party validation to meet international fire safety, environmental, and thermal standards.
We submit our elastomeric materials to independent testing agencies to verify compliance with global safety standards. Our products have earned certifications across key international performance indicators:
Understanding cost variables, volumetric discounts, and customization options for bulk commercial orders.
Our pricing model is designed to provide transparency for procurement managers, structural estimators, and wholesale distributors. Prices are structured based on material volume, customization specifications, and the complexity of additional coatings (e.g., self-adhesive layers or aluminum foil facings).
Below is a general reference matrix outlining how product categories, thickness levels, and density profiles correlate with baseline pricing ranges. For final project quotes incorporating volume discounts or customized specifications, please contact our team directly.
| Material Category | Thickness Spec | Density Range | Optional Facings | Baseline FOB Price Range (Est.) |
|---|---|---|---|---|
| Standard Elastomeric NBR/PVC Roll | 6mm - 13mm | 40 - 45 kg/m³ | None / Color Painted | Contact Sales for Latest Rates |
| High-Density NBR/PVC Roll | 19mm - 50mm | 45 - 55 kg/m³ | Self-Adhesive backing / ALU foil | Request Customized Commercial Quote |
| Standard Piping Tubes | 9mm - 25mm (Wall) | 40 - 50 kg/m³ | Reinforced outer barrier film | Priced by Linear Meter / Volume |
| Cryogenic Low-Temp Tubing | 19mm - 40mm (Wall) | 50 - 55 kg/m³ | Multi-layer vapor barrier wrapper | Project-Specific Custom Price Structure |
| Halogen-Free Environmental Foam | 10mm - 32mm | 42 - 48 kg/m³ | Optional flame barrier laminates | Available on Direct Inquiry |
Note: The price ranges shown above fluctuate with raw material costs (nitrile monomer, PVC resin, blowing agents) and order quantities. Standard production lead time is 14 to 21 working days from deposit confirmation.
A look at customer feedback, order updates, and field implementation details from around the world.
We work to maintain clear communication with our international partners from initial engineering review through final customs clearance. By providing design mock-ups, dimensional verifications, and quality assurance records, we help resolve challenges before cargo dispatch.
Our logistics team handles customs paperwork, export compliance, packaging protection, and shipping schedules to ensure cargo arrives intact and ready for installation. Below are verified records of order completions, site approvals, and feedback from our global clients.
A visual overview of our continuous mixing, extruding, vulcanizing, and packaging operations at our Dacheng facility.
Detailed answers to common questions regarding material selection, fire performance, acoustic dampening, and procurement.
Explore our full range of specialty insulation, including halogen-free options, cryogenic systems, and high-density piping boards.
