Kingflex
Stainless steel piping systems represent significant capital investments within modern pharmaceutical, food processing, petrochemical, and HVAC industries. While stainless steel offers superior corrosion resistance, it is uniquely vulnerable to Stress Corrosion Cracking (SCC) and Corrosion Under Insulation (CUI) when exposed to ambient moisture, chlorides, and thermal cycling.
Selecting an insulation system is not just about reducing heat loss; it is about establishing a protective barrier. Kingflex Elastomeric Closed-Cell Rubber Foam provides a built-in water vapor barrier with an exceptionally high resistance factor (μ ≥ 10,000), stopping ambient moisture penetration. This fundamentally removes the electrolyte required for corrosive cells to establish on the stainless steel substrate.
From steam transport in heavy manufacturing plants to cryogenic logistics systems handling liquefied gases, our advanced insulation solutions ensure precise temperature management, prevent surface condensation, and limit thermal bridging to zero.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Kingflex research development and production department is located in the well-known capital of green-building materials in Dacheng, China. It is an energy-saving environmentally friendly enterprise concentrating on research and development, production, and sales. In operation, Kingflex takes energy saving and consumption reduction as the core concept.
Kingflex was established by the Jinwei Group, which carries a rich history of more than 40 years. Jinwei Group, established in 1979, was the first manufacturer of high-grade thermal insulation materials north of the Yangtze River. Decades of continuous chemical refinement led to our signature closed-cell elastomeric formulations.
Our employees are amazing in their own right, but together they are what makes Kingflex a reliable partner. The Kingflex team is a tight-knit, talented group with a shared vision of providing first-class service. Kingflex has 8 professional engineers in the R&D Department, 6 international sales experts, and 230 workers in the production department.
Currently, Kingflex operates 5 large-scale automatic assembly lines with an annual capacity exceeding 600,000 cubic meters. We are a designated production enterprise certified by the Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry in China.
Our core mission is to supply customers worldwide with a full set of energy-saving insulation system solutions, serving as an integrated provider of thermal insulation, cold insulation, and noise reduction.
To maintain zero corrosion rates on stainless steel piping, our R&D facility utilizes advanced testing rigs for simulated aging, smoke density analysis, and chloride leaching tests. Our research guarantees that Kingflex products meet the high standards demanded by our customers.
Our state-of-the-art laboratory testing validates every production batch for thermal conductivity, water absorption, and fire-safety ratings before shipment.
Ideal for large-diameter stainless steel piping networks, industrial tanks, vessels, and complex shape fittings where pre-formed pipes cannot be easily applied.
| Parameters | Value / Specifications |
|---|---|
| Material Composition | Premium Nitrile Butadiene Rubber (NBR/PVC) blend |
| Thickness Range | 6mm to 50mm |
| Bulk Density | 40 to 55 kg/m³ |
| Operating Temperature | -40℃ to 105℃ |
| Closed-Cell Ratio | ≥ 98% |
| Compression Resilience | ≥ 80% |
Perfectly engineered cylindrical sleeves designed to slip over stainless steel pipes during installation, providing clean seam-seal joints.
| Parameters | Value / Specifications |
|---|---|
| Material Composition | Premium NBR/PVC elastomeric matrix |
| Wall Thickness | 9mm to 40mm |
| Inner Diameter (ID) | 6mm to 114mm (Matches standard SS Pipe Outer Diameters) |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·k) at 0℃ |
| Fire Performance | Class 1, Class 0 BS476 Part 7/6, UL94 V-0 |
| Moisture Resistance | μ ≥ 10,000 (Built-in vapor barrier) |
For food preparation zones and pharmaceutical cleanrooms, stainless steel piping systems transport chilled water and clean steam. Kingflex halogen-free thermal insulation pipes ensure zero chemical outgassing, maintaining IAQ (Indoor Air Quality) while preventing condensation that leads to mold development.
At extreme low temperatures, conventional insulation materials crack under thermal contraction stresses. Our Cryogenic Rubber Foam insulation systems withstand extreme thermal strains, preventing thermal bridging on stainless steel process lines transporting liquid nitrogen, ammonia, or carbon dioxide.
Stainless steel pipes exposed to high temperatures require materials like rock wool insulation boards and blankets. With high-temperature stability, Kingflex rock wool designs safeguard external pipe surfaces up to 650°C, providing structural security and saving energy.
To guarantee compliance on localized global construction projects, our NBR/PVC and rock wool materials undergo verification by third-party certification authorities.
Part 6 & 7 fire propagation and surface spread of flame certification.
EU health, safety, and environmental protection standards verification.
Strict factory quality management and operational efficiency systems.
Verified self-extinguishing safety limits for indoor industrial systems.
Discover direct transaction communication receipts and real-time project pictures validating our global B2B procurement performance.
Actual field installations showcasing rubber foam sheeting and molded tubes cleanly applied to industrial piping systems.
How Kingflex is innovating to meet next-generation standards for green construction, high safety, and low emissions.
Eliminating halogen elements (Chlorine, Bromine) from our chemical formulas to eliminate the risk of chloride stress cracking in stainless steel piping.
Optimizing closed-cell microstructures to reduce raw thermal conductivity down to λ = 0.031 W/(m·K), lowering heat loss in extreme operations.
Developing specialized open-cell hybrid structures that provide acoustic barrier performance, meeting low-noise safety standards.
Key technical answers regarding the insulation of stainless steel piping systems, direct from the engineering department.
A1: It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its closed-cell structure makes it exceptionally effective at preventing water vapor transmission, which is critical for anti-condensation applications.
A2: Yes, our rubber foam insulation products are fire retardant. They are certified to meet BS 476 (Part 6 & 7, Class 0/Class 1) and UL94 V-0 standards. This makes them self-extinguishing when exposed to fire, ensuring safety compliance for complex building and industrial projects.
A3: Rubber foam is highly flexible, closed-cell, and vapor-permeable resistant, making it ideal for HVAC, plumbing, and low-temperature cold insulation. Rock wool is high-temperature resistant and fireproof, suited for industrial high-temperature steam lines and chimney exhausts.
A4: Yes, we provide full OEM and ODM services. We can adjust the density, internal diameters (ID) for specific pipe schedules, customize thicknesses up to 50mm, and apply custom jackets (e.g., ALU foil cladding) to meet specific architectural or performance specifications.
A5: Our products have passed BS 476, CE, REACH, RoHS, UL94, and ASTM standards. This verification guarantees that our materials comply with fire safety, toxicity, and environmental standards required across Europe, the Middle East, and the Americas.
A6: Yes, Kingflex enforces a strict quality control system. Every production batch is tracked from raw material mixing to the final extruder lines, and each roll or carton is labeled with production codes to ensure trace-back verification.
A7: We produce rubber foam sheet rolls in thicknesses ranging from 6mm to 50mm. Multi-layer applications can be customized to meet even thicker dimensional requirements.
A8: When properly selected, detailed, and installed under normal design temperatures (-40°C to 105°C) and protected from direct UV damage, our products provide a service life of 10 to 15 years.
