Kingflex
Kingflex
High-performance closed-cell elastomeric rubber foam sheets, tubes, and cryogenic systems engineered for demanding global projects.
Kingflex Insulation Co., Ltd. is a premier manufacturing and trading combo specializing in state-of-the-art thermal insulation products. Strategically located in Dacheng, China—the globally recognized capital of green building materials—Kingflex stands at the forefront of the energy-saving and environmental-protection sectors.
By blending advanced research and development with automated manufacturing, Kingflex is dedicated to energy conservation as its core operating concept. We provide integrated insulation solutions, covering consultation, customized product formulation, installation guidelines, and post-sales technical services to lead the global development of structural and HVAC insulation.
Under the hood of Kingflex's NBR/PVC closed-cell structure and performance metrics.
At the center of Kingflex's thermal performance is our microcellular, closed-cell NBR/PVC matrix. Unlike open-cell fibrous products such as glass wool or rock wool, Kingflex elastomeric foam features an evenly distributed closed-cell rate of over 98%. This structural configuration offers several engineering advantages:
| Parameter / Feature | Kingflex Elastomeric NBR/PVC Foam | Conventional Glass/Rock Wool | Phenolic / PIR Foams |
|---|---|---|---|
| Cellular Structure | Closed-cell (over 98%) | Open-cell (Fibrous) | Closed-cell (Brittle) |
| Moisture Resistance (μ-value) | ≥ 10,000 (Built-in) | < 5 (Requires separate jacket) | > 5,000 |
| Operating Temp. Range | -40°C to +105°C (Cryogenic variants to -200°C) | Up to +650°C | -180°C to +120°C |
| Dust & Fiber Hazards | None - fiber-free, dust-free | High risk during installation/repair | Minimal, but brittle edges crumble |
| Corrosion under Insulation (CUI) | Extremely Low (Hydrophobic barrier) | High (Retains trapped water) | Medium |
Unlocking procurement efficiencies through Dacheng's raw material cluster, logistics pathways, and localized regulatory compliance.
Located in the heart of China’s petrochemical and polymer industrial corridor, Kingflex secures continuous access to prime grade NBR rubber, PVC resins, and advanced fire retardants. This cluster effect buffers against volatility, keeping prices stable for wholesale buyers.
Operating 5 high-speed automatic continuous foaming assembly lines ensures consistent thickness control, uniform cell distributions, and rapid order processing. We can deliver up to 50 containers per month, maintaining lead times under 14 days.
Every single roll and pipe coming out of our plant features laser-engraved run numbers for full batch traceability. Standard QA routines include heat aging tests, moisture resistance validation, and flame behavior indexing inside our modern labs.
To operate seamlessly in foreign markets, Kingflex supplies rigorous certifications and test reports. We assist engineering consultants and EPC contractors by tailoring products to local building guidelines.
Whether you require compliance with Class 0 (BS 476 Part 6 & 7) for British Commonwealth projects, UL 94 (V-0 / 5VA) classifications for electrical safety, or ASTM E84 (25/50 flame/smoke rating) for the North American market, our engineering team can modify formulations to match local legislation.
Continuous innovations that secure international building material certifications year after year.
Led by 8 dedicated chemical and material science engineers, our R&D center works in partnership with China's top academic institutes. This keeps us at the forefront of polymer foaming technology, helping us refine our formulas to reduce outgassing (VOCs) and eliminate potential skin irritations.
We are a designated production enterprise approved by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry, demonstrating our reliability across high-stakes industrial projects.
From HVAC networks in commercial towers to cryogenic protection in extreme petrochemical complexes.
Perfect for commercial chilled water lines, VRF systems, and metal ventilation ducts. Its high moisture resistance prevents condensation and mold, protecting building structures from water damage and keeping indoor air clean.
Specially engineered for ultra-low temperature applications (down to -200°C) like LNG processing, ethylene pipelines, and liquid nitrogen storage. Standard elastomeric foams brittle under these conditions, but our cryogenic variants keep their structural flexibility and thermal resistance intact.
Widely used in power plants, oil refineries, and chemical facilities to cover process piping. It prevents energy loss on hot lines up to 105°C while protecting operators from contact burns.
| Application Sector | Critical Requirement | Recommended Kingflex Configuration | Primary Benefit |
|---|---|---|---|
| Data Centers | Zero fiber contamination, high moisture barrier | Self-adhesive Elastomeric Sheets with Alum. Foil jacket | Protects servers from fibers; prevents pipe condensation |
| Marine & Shipyards | Salt air corrosion, extreme fires safety | UV-resistant outer skin over NBR/PVC Foam core | Salt spray defense, low toxic gas emissions |
| Hospitals / Clean Rooms | Anti-microbial, zero dust release | Foil-faced NBR/PVC sheets (antimicrobial additive) | Prevents allergen accumulation, easily sanitized |
| LNG Cryogenics | Elasticity at -196°C, thermal contraction buffer | Multi-layer Cryogenic Elastomeric System | Prevents pipe stress cracks, prevents system icing |
Technical drawings and properties for our main insulation configurations.
Kingflex Sheet Rolls are designed for large surfaces like rectangular ducts, large tanks, and wide process piping. Available with self-adhesive backings and protective foil linings, they streamline installation on-site.
| Material Matrix | NBR/PVC Elastomeric Foam |
| Thickness Options | 6mm, 9mm, 13mm, 15mm, 19mm, 25mm, 32mm, 40mm, 50mm |
| Standard Density | 40 - 55 kg/m³ |
| Service Range | -40℃ to 105℃ |
Designed for quick slide-on installation during plumbing builds or retrofit slitting. These pipes feature consistent inner diameters and uniform wall thicknesses to prevent thermal bridging.
| Inner Diameters (ID) | 6mm to 114mm (Nominal pipe sizes) |
| Wall Thicknesses | 9mm, 13mm, 19mm, 25mm, 32mm, 40mm |
| Moisture Permeability | Moisture resistance factor ≥ 10,000 |
| Special Features | High elasticity, reduces mechanical vibration, prevents pipe freeze-cracking |
Transparent international sales, real-time logistics tracking, and verified customer feedback.
Through transparent communication and proactive document sharing, our export department ensures that import duties, custom HS classifications, shipping routes, and product compliance details are settled before the cargo leaves Tianjin Port.
Technical and logistics answers compiled by our senior engineers and regional export managers.
It is primarily used to isolate central HVAC air ducts, split air conditioning piping, commercial water supply tubes, chilled lines, and high-spec industrial or cryogenic process lines. Its design prevents thermal transfer, dampens acoustic vibrations, and prevents condensation on cold pipe walls.
Yes. Our rubber foam insulation includes advanced flame retardants to meet BS 476 Part 6 & 7 (Class 0 and Class 1), UL 94 V-0, and ASTM E84 requirements. In a fire, it will self-extinguish when the flame source is removed and will not drop burning particles.
The main differences are cellular structure and moisture behavior. Rubber foam has a closed-cell, water-impermeable structure (excellent for low-temp, HVAC, and humid zones). Rock wool has an open-cell, fibrous structure that stands up to very high temperatures but is highly absorbent, meaning it requires a separate outer vapor jacket to prevent mold and corrosion under insulation (CUI).
Yes, we provide full OEM and ODM support. We can customize density profiles, foam wall thicknesses (from 6mm to 50mm), internal bore diameters for pipes, special adhesive backings, and external cladding layers (including aluminum foil or tough fiberglass fabrics).
Kingflex insulation materials are fully certified under BS 476, CE, REACH, RoHS, UL 94, and ASTM standards. We issue certified copies of these testing documents with every bulk order for verification by local building authorities.
Yes. Every production run has a distinct batch code printed on the packaging and along the inside skin of our tube products. This code links to our digital database, showing the production date, operator log, raw material certificate, and QA inspection outcomes.
Our automated lines produce continuous sheet rolls in standard thicknesses from 6mm to 50mm. For specialized requirements above 50mm, we offer precision laminating services using cold-bonding vulcanizers to build thicker composite profiles.
When installed using proper adhesives and in environments within the design temperature limits (-40°C to +105°C), Kingflex has a typical service life of 10 to 15 years. Outdoor installations require protective coatings or UV-resistant cladding to prevent weathering and breakdown from prolonged sun exposure.
Our pricelists are structured in tiers based on volume. Larger volume purchases lower raw material prep costs and energy usage on our continuous extrusion lines, allowing us to pass savings down to the client. Contact our export sales team with your bill of quantities (BOQ) for a tailored FOB or CIF quote.
Take a look inside our 5 automated production lines and logistics yards in Dacheng.
Specialized formulas including foil laminates, ultra-low temp cryogenic sleeves, and custom soundproof sheeting.
Leveraging decades of corporate development to bring you dependable technical services.
Established as part of the Jinwei Group (which dates back to 1979), Kingflex inherits over 40 years of pioneering technical expertise in insulation manufacturing. As the first insulation material factory established north of the Yangtze River, we have built a proud history of quality and stability.
Our plant operations employ 230 skilled production workers overseen by senior manufacturing managers. Backed by our 6 international trade specialists, we coordinate smooth global logistics and site deliveries directly with your teams.
