King flex flexible ultra-low temperature insulation system belongs to the multi-layer composite structure, is the most economical and reliable cooling system. The system can be directly installed under the temperature as low as -110°C on all piping equipment when the surface temperature of the pipe is lower than -100 °C and the pipeline usually has obvious repeated movement or vibration.
ULT Sheet Standard Size
| Code |
Thickness (mm) |
Length (m) |
M² / Bag |
| KF-ULT-25 |
25 |
8 |
8 |
Key Features & Benefits
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Low thermal conductivity
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Suitable for applications from -200 °C to +110 °C
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Low density and weight
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Cost effective
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Fewer seams to provide a faster and more secure installation
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Easily applied to awkward and difficult shapes
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Easily handled and transported
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Free of fibre and dust
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Suitable for the oil and gas industry
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Minimised risk of corrosion under insulation
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Multi‐layered system provides exceptional thermal performance
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Ease of installation with reduced use of hazardous components
Performance Specifications
| Performance |
Base Material (Kingflex ULT) |
Base Material (Kingflex LT) |
Standard |
| Thermal Conductivity |
-100℃, 0.028 / -165℃, 0.021 |
0℃, 0.033 / -50 ℃, 0.028 |
ASTM C177 / EN 12667 |
| Density |
60-80 kg/m³ |
40-60 kg/m³ |
ASTM D 1622 |
| Recommend Operating Temp. |
-200℃ to +125℃ |
-50℃ to +105℃ |
NA |
| Percentage of Close Area |
> 95% |
> 95% |
ASTM D 2856 |
| Moisture Permeance Factor |
NA |
< 1.96 × 10⁻⁹g/(m·s·Pa) |
ASTM E96 |
| Wet Resistance Factor µ |
NA |
> 10000 |
EN 12086 / EN 13469 |
| Water Vapor Permeability |
NA |
0.0039g/h.m² (25mm thickness) |
ASTM E96 |
| PH |
≥ 8.0 |
≥ 8.0 |
ASTM C871 |
| Tensile Strength |
-100℃, 0.30 / -165℃, 0.25 MPa |
0℃, 0.15 / -40℃, 0.218 MPa |
ASTM D 1623 |
| Compressive Strength |
-100℃, ≤ 0.37 MPa |
-40℃, ≤ 0.16 MPa |
ASTM D 1621 |
Frequently Asked Questions
Q1: What temperature range is the Kingflex ULT insulation system suitable for?
The Kingflex ULT insulation system is designed for extreme cold applications, with a recommended operating temperature range from -200 °C up to +125 °C.
Q2: Can the insulation system be installed on active low-temperature pipelines?
Yes, the system can be directly installed under temperatures as low as -110°C on all piping equipment when the surface temperature of the pipe is lower than -100°C.
Q3: How does the system handle pipe movements or vibrations?
The system features a flexible, multi-layer composite structure that effectively accommodates pipelines with obvious repeated movement or vibration without compromising insulation integrity.
Q4: Does the Kingflex insulation system prevent corrosion under insulation (CUI)?
Yes. One of the major benefits of this multi-layered system is that it minimises the risk of corrosion under insulation (CUI), protecting your piping and equipment over the long term.
Q5: What are the differences in density between the ULT and LT base materials?
Kingflex ULT has a density of 60-80 kg/m³ under ASTM D 1622 standards, whereas Kingflex LT has a lighter density profile ranging between 40-60 kg/m³.
Q6: Is the insulation material safe and easy to install?
Absolutely. The system is free of fibre and dust, and allows for ease of installation with fewer seams and reduced use of hazardous components, making it safer to handle and transport.
Kingflex
