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Polyisocyanurate PIR Pipe Insulation Durable Good Flammability Resistance

Place of Origin Changzhou, Jiangsu,China
Brand Name Kaff Rees
Certification SGS
Minimum Order Quantity 20 Cubic Meters
Price Negotiable
Packaging Details Carton packaging/Wooden case packaging/according to the requirements
Delivery Time Negotiable
Payment Terms EXW/FOB/CIF
Supply Ability According to products
Product Details
Name Polyisocyanurate PIR Pipe Insulation Feature Durable
Cold Insulation Material Polyisocyanurate PIR PH Value 5.5-7
Service Temp. -196~+120℃ Application Low Temperature Industries
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Product Description
Polyisocyanurate PIR Pipe Insulation - Durable Good Flammability Resistance
Application
Polyisocyanurate (PIR) is an ideal organic low-temperature thermal insulation material with excellent thermal conductivity and dimensional stability. Suitable for a wide temperature range, it is widely used in LNG, ethylene, cold storage, and other low-temperature industries.
PIR is a foaming material made by polymerizing isocyanate and polyether, offering superior physical and fire resistance compared to polyurethane. This organic rigid thermal insulation material combines low thermal conductivity with outstanding dimensional stability.
Key Features
  • Fire resistance rated B1
  • Operating temperature range: -196°C to +120°C
  • Excellent dimensional stability
  • Customizable cutting in panels and pipes to meet specific requirements
Technical Properties
Item Unit Technical Data Test Mode
Density kg/m³ ≥40 ASTM D1622 / ISO 845
Thermal Conductivity W/(m·K) ≤0.035 (+100°C)
≤0.029 (+50°C)
≤0.025 (+10°C)
≤0.024 (0°C)
≤0.023 (-50°C)
≤0.022 (-100°C)
≤0.017 (-150°C)
≤0.016 (-170°C)
ASTM C177
Compressive Strength kPa +23°C: ≥200
-165°C: ≥280
ASTM D1621
Tensile Strength kPa +23°C: ≥320
-165°C: ≥265
ASTM D1623
Flame Spread Index <25 ASTM E84
Oxygen Index ≥30 GB/T 2406.2
Water Absorption by Vol. % ≤2 ASTM D2842
Water Vapor Permeability ng/(Pa·s·m) ≤5.5 ASTM E96
Closed Cell Ratio % ≥95 ASTM D6226
Lineal Thermal Expansion Coefficient m/(m·K) ≤70×10⁻⁶ ASTM D696
pH Value 5.5-7 ASTM C871
Chloride Content ppm ≤60 GB/T 11835
Elastic Modulus MPa ≤16 ASTM D1623
Service Temperature °C -196 to +120
Typical PIR Insulation System Structure
PIR insulation system structure diagram
  1. PIR Shell: inner layer + middle layer (if necessary) + outer layer
  2. Secondary Vapor Barrier: PAP aluminum foil
  3. Main Vapor Barrier: mastic + fiberglass meshes + mastic
  4. Metal Protective Layer: aluminum alloy plate, stainless steel plate, aluminized steel plate, GRP
  5. Sealant: HS-10-02, Foster 95-50, etc
  6. Strapping Material: stainless steel tape, sub sensitive tape
Packing and Storage
  • Store in a dry, lightproof, shady, and ventilated place, away from heat sources and protected from sun exposure
  • Inner package: black polyethylene bags; Outer package: cartons
Cautions
  • Handle PIR gently - avoid rolling, collision, and heavy pressure during movement
  • When applied to pipe and equipment insulation, fasten PIR with glass fiber tape or steel band
  • Use a saw for cutting during application
Production Flow
PIR insulation production flow diagram