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rock Wool Acoustic Panels
High-density rock wool acoustic panels for superior sound absorption and thermal insulation in buildings.
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Rockwool Pipe Insulation for Steam Pipes
Pre-formed rockwool pipe insulation sections for steam pipes, HVAC and industrial piping. Rigid pipe insulation material rated 750C, Class A1 non-combustible.
- Density
- 60-150 kg/m3
- Thickness
- 25-200mm
- Asbestos
- 100% Non-Asbestos
- Temperature Rating
- Up to 750C
Overview
- ✦ Pre-formed for quick installation
- ✦ Uniform insulation thickness
- ✦ Excellent thermal performance
- ✦ Class A non-combustible
Rockwool Pipe Insulation for Steam Pipes
Rockwool pipe insulation (also written rock wool pipe insulation) is the industry-standard insulation pipe solution for industrial process piping, district heating networks, and high-temperature steam lines. These pre-formed cylindrical sections are manufactured from high-quality basalt wool, engineered to provide uniform thermal performance and reliable fire protection across a wide temperature range.
As a dedicated pipe insulation material, rockwool pipe sections deliver excellent thermal conductivity (0.034-0.040 W/(m.K) at 50C), Class A1 non-combustibility, and hydrophobic water repellency exceeding 98%. They are specifically designed as insulation for steam pipes in power plants, petrochemical facilities, and refinery process lines where operating temperatures reach 750C.
Why Choose Rockwool Insulation for Pipes
- Pre-formed for quick installation - factory-cut to standard pipe diameters (DN15-DN300), ensuring uniform coverage and tight fit
- Excellent thermal performance - low thermal conductivity minimizes heat loss from steam lines and hot process piping
- Class A1 non-combustible - Euroclass A1 and ASTM E84 Class A fire rating, will not contribute to fire spread
- Water repellent - hydrophobic treatment with 98%+ water repellency maintains performance in humid environments
- Durable long service life - 15-20 year service life with stable dimensional properties
- Sound absorption - additional acoustic insulation benefit for mechanical room pipework
Insulation for Steam Pipes Applications
Rockwool pipe insulation is the preferred insulation for steam pipes in:
- Power plant steam pipes - main steam, reheat steam, and extraction steam lines operating at 500-750C
- Petrochemical process piping - hydrocarbon process lines, refinery heater tubes, and hot oil circuits
- District heating pipelines - buried and above-ground distribution mains for urban heating networks
- Industrial process pipe insulation - chemical plants, steel mills, and food processing facilities
- HVAC and chilled water piping - condensation control and energy conservation
- Marine and offshore pipework - engine room exhaust and hot service lines
Pipe Insulation Material Comparison
| Property | Rockwool Pipe | Calcium Silicate | Fiberglass Pipe | Ceramic Fiber |
|---|---|---|---|---|
| Max Temperature | 750C | 1050C | 540C | 1430C |
| Thermal Conductivity | 0.034-0.040 | 0.045-0.055 | 0.030-0.036 | 0.080-0.120 |
| Fire Rating | Class A1 | Class A1 | Class A1 | Class A1 |
| Water Repellency | 98%+ | No | No | No |
| Density | 60-150 kg/m3 | 170-240 | 32-96 | 96-160 |
| Pipe Fit | Pre-formed | Pre-formed | Pre-formed | Wrap |
Technical Specifications
Our rockwool pipe insulation sections are available in densities from 60 to 150 kg/m3, thicknesses from 25mm to 200mm, and inner diameters covering DN15 (1/2") through DN300 (12"). Standard outer jacket options include aluminum foil facing and fiberglass cloth for mechanical protection and vapor barrier performance.
All products are manufactured under ISO 9001 quality management, with third-party certifications from SGS, Intertek, and TUV Rheinland. Products comply with ASTM C612, Euroclass A1, and REACH requirements.
Quality Assurance
- ISO 9001 certified manufacturing (SGS #CN-QMS-2025-001)
- ASTM C612 Type IIA-V compliant (Intertek tested)
- Euroclass A1 fire classification (TUV Rheinland #CE-REF-2025-043)
- REACH compliant (ECHA registered)
- 100% non-asbestos, formaldehyde-free binder system
For project-specific technical data sheets, material safety data sheets, or custom diameter requirements, contact our engineering team for a tailored quote.
Part of the rock wool product family.
Key features
- ✓ Pre-formed for quick installation
- ✓ Uniform insulation thickness
- ✓ Excellent thermal performance
- ✓ Class A non-combustible
- ✓ Water repellent
- ✓ Durable long service life
Typical applications
- Industrial process pipe insulation
- District heating pipelines
- Petrochemical thermal management
- Power plant steam pipes
- Commercial building services
- Insulation for steam pipes in power plants
- Rockwool pipe insulation for petrochemical plants
Technical specs
- Density
- 60-150 kg/m3
- Thickness
- 25-200mm
- Asbestos
- 100% Non-Asbestos
- Temperature Rating
- Up to 750C
- Thermal Conductivity
- 0.034-0.040 W/(m.K) @50C
- Pipe Diameter Range
- DN15-DN300 (1/2-12 inch)
- Surface Treatment
- Aluminum foil / fiberglass cloth facing
Last updated: August 13, 2026
Frequently asked
What temperature can rock wool insulation withstand? +
Rock wool insulation can withstand temperatures up to 750C for standard grades. It is classified as a non-combustible material (Euroclass A1, ASTM E84 Class A), making it ideal for structural fire protection, industrial pipe insulation, and building envelope applications.
Does rock wool absorb water? +
No. Our rock wool products feature hydrophobic treatment with water repellency exceeding 98%. Unlike some insulation materials, rock wool maintains its thermal performance even in high-humidity environments. This makes it particularly suitable for outdoor pipework and marine applications.
Is rock wool environmentally friendly? +
Yes. Rock wool is manufactured from volcanic basalt rock - an abundant natural resource. It contains up to 75% recycled content, is fully recyclable at end of life, and contributes to building energy efficiency by reducing heat loss. It is RoHS and REACH compliant.
What density of rock wool insulation should I use? +
The optimal density depends on your application: 60-80 kg/m3 for general thermal insulation of tanks and vessels, 80-120 kg/m3 for pipe insulation and HVAC ductwork, 100-150 kg/m3 for load-bearing or structural applications, and 150+ kg/m3 for high-compression industrial flooring and sandwich panels.
What is rockwool pipe insulation? +
Rockwool pipe insulation (also called rock wool pipe section) is a pre-formed cylindrical insulation product made from molten basalt rock spun into fibers. It is designed specifically for insulating pipes in industrial, HVAC, and steam applications. As a rigid pipe insulation material, it provides uniform thermal performance, fire protection, and sound absorption. Rockwool insulation for pipes is available in densities from 60 to 150 kg/m3 and inner diameters from DN15 to DN300.
Is rockwool good insulation for steam pipes? +
Yes. Rockwool is one of the best insulation materials for steam pipes because it withstands temperatures up to 750C, provides Class A1 fire protection, and maintains thermal performance even in humid environments. As insulation for steam pipes, rockwool pipe sections minimize heat loss, reduce energy waste, and protect personnel from burn hazards. Power plants, petrochemical refineries, and district heating systems commonly use rockwool pipe insulation for main steam lines operating at 500-750C.
What is the best pipe insulation material? +
The best pipe insulation material depends on your operating temperature and application. For steam pipes and high-temperature process lines (up to 750C), rockwool pipe insulation is the industry standard due to its fire rating, thermal performance, and water repellency. For temperatures up to 1050C, calcium silicate pipe insulation is preferred. For chilled water and HVAC piping below 200C, fiberglass pipe insulation is cost-effective. For extreme heat up to 1430C, ceramic fiber pipe insulation is used. Rockwool remains the most versatile pipe insulation material for general industrial applications.
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