Wholesale Colorful NBRPVC foaming insulation tube Manufacturers, Pricelist

Kingflex mainly specialized in insulation rubber foam product , it has closed cell construction and many great features such as low thermal conductivity, elastomeric,hot and cold resistant, fire retardant, waterproof, shocks and sound absorption and so on. Kingflex rubber materials is widely used in large central air conditioning system,chemicals,electrical industries such as the types of hot and cold media pipeline, all kinds of fitness equipment jacket/pads and so on to achieve lower cold loss.
  • nominal wall thicknesses of 1/4”, 3/8″, 1/2″, 3/4″,1″, 1-1/4”, 1-1/2″ and 2” (6, 9, 13, 19, 25 , 32, 40 and 50mm)
  • Standard Length with 6ft (1.83m) or 6.2ft(2m).

Product Description

Technical Data
Property Unit Value Test Method
Temperature range °C (-50 - 110) GB/T 17794-1999
Density range Kg/m3 45-65Kg/m3 ASTM D1667
Water vapor permeability Kg/(m.s.pa) ≤0.91×10 ﹣¹³ DIN 52 615 / BS 4370 Part 2 1973
μ - ≥10000 -
Thermal Conductivity W/(m.k) ≤0.030 (-20°C) ASTM C 518
≤0.032 (0°C)
≤0.036 (40°C)
Fire Rating - Class 0 & Class 1 BS 476 Part 6 part 7
Flame Spread and Smoke Developed Index - 25/50 ASTM E 84
Oxygen Index - ≥36 GB/T 2406, ISO4589
Water Absorption,%by Volume % 20% ASTM C 209
Dimension Stability - ≤5 ASTM C534
Fungi resistance - Good ASTM 21
Ozone resistance Good GB/T 7762-1987
Resistance to U.V. and weather Good ASTM G23

Growth in the construction industry and many other industrial segments, combined with concerns over rising energy costs and noise pollution, is fueling market demand for thermal insulation. With more than 42 years of dedicated experience in manufacturing and applications, the insulation company is riding on top of the wave.

💡 Industry Overview

Decades of specialized production knowledge ensure optimal efficiency, stability, and meeting strict modern construction and ecological guidelines.

Frequently Asked Questions
Q: What is the recommended operating temperature range for this insulation material?
The insulation material works effectively in a temperature range of -50°C to 110°C, tested in compliance with GB/T 17794-1999 standards.
Q: What fire safety ratings does this insulation achieve?
It achieves Class 0 & Class 1 fire ratings (under BS 476 Part 6 & 7 test methods) and has a flame spread and smoke developed index of 25/50 (ASTM E 84).
Q: How does the material perform in terms of thermal conductivity?
According to ASTM C 518, the thermal conductivity values are ≤0.030 W/(m.k) at -20°C, ≤0.032 W/(m.k) at 0°C, and ≤0.036 W/(m.k) at 40°C.
Q: Is this material resistant to mold, UV, and outdoor weather conditions?
Yes, the material features good resistance to fungi (ASTM 21), ozone (GB/T 7762-1987), and UV/weather exposure (ASTM G23).
Q: What is the water absorption capacity and vapor permeability?
The water absorption is ≤20% by volume (ASTM C 209), and the water vapor permeability is ≤0.91×10⁻¹³ Kg/(m.s.pa) based on DIN 52 615 and BS 4370.

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