High Density Rock Wool Pipe – Fireproof Preformed Pipe Insulation for Steam Pipes, HVAC & Industrial Piping
1. Product Overview
High-density rock wool pipe is rigid, pre-shaped inorganic preformed pipe insulation built for circular pipework. Manufactured from basalt and diabase through high-temperature melting, fiber spinning and heat curing, it fits tightly against pipe surfaces with consistent sealing. This sets it apart from flat rock wool boards which cannot wrap curved pipework. Aluminium foil or fiberglass outer wrapping can be fitted to match different site conditions.
Free of formaldehyde and zero-VOC compliant, the product meets global green building codes. Treated for full water repellency, it brings together A1 fire resistance, steady thermal retention, reliable condensation control, frost protection, sound dampening and anti-corrosion properties. It cuts down pipeline heat loss, stops condensation drips and frost cracks while containing flame spread, delivering tangible energy saving across industrial pipe networks, building HVAC and municipal piping worldwide.
2. Core Product Advantages
Close Pipe Fit & Reliable Pipe Insulation Wrap to Cut Heat Waste
Roll-form production delivers uniform roundness and tight pipe contact to minimise gaps and air ingress. Superior sealing outperforms loose fibrous insulation and keeps steady long-term energy efficiency.
A1 Fire Rating per Global Standards
Sourced from pure inorganic fibre, the material holds EN 13501-1 A1 grade and passes ISO 1182 fire tests. No harmful fumes, molten drips or unchecked flame spread occurs during fire exposure, stopping fire travel along pipe runs and satisfying international site inspection rules.
Low Thermal Conductivity for All-temperature Insulation & Condensation Control
Compact internal pore structure achieves thermal conductivity ≤0.040 W/(m·K) at 25°C. It limits heat bleed from hot steam pipes and eliminates surface sweating on chilled refrigerant lines to meet worldwide energy efficiency requirements.
All-weather Hydrophobic Durability
Full factory hydrophobic treatment limits water uptake significantly. The finished product resists damp, mould, acid and alkaline corrosion plus UV degradation, holding steady performance in coastal, chemical and permanently exposed outdoor locations.
Prefabricated for Fast Mounting
Light prefabricated sleeves slot straight over pipes with no extra on-site cutting or processing. Installation time falls by 20%-30%, reducing on-site labor costs on large overseas construction jobs.
3. Technical Specifications
Inner Diameter: 50/65/80/100/150mm, bespoke sizes availableWall Thickness: 30/50/60/80mm, thicker options for high heat and anti-freeze needsStandard Length: 1000/2000mmDensity: 100kg/m³ for regular non-pressure piping; 120–150kg/m³ for high-spec projectsTemp Range: Peak: 600°C, Continuous: ≤400°CFire Grade: A1 Non-combustible (EN & ISO approved, CE certified)Thermal Conductivity: ≤0.040 W/(m·K)Features: A1 fireproof, freeze protection, waterproofing, weather-proof, sound absorbing, easy installation
4. Application Scenarios
Industrial Piping
Insulate steam, hot water, chemical and low-temperature refrigerant pipework across power, chemical and pharmaceutical plants to stabilise operating conditions and prevent frost cracking or surface scalding.
Building HVAC & Plumbing
Fit around air conditioning, heating and domestic water pipes in homes, shopping centres and office blocks to cut running power use, reduce condensation and quiet operational noise.
Municipal Outdoor Pipeline
Deliver anti-freeze and anti-corrosion insulation for buried, bridge-mounted and overhead municipal piping against harsh outdoor weather conditions.
Auxiliary Equipment Piping
Provide thermal and fire protection for connecting pipework attached to production machinery to slow material ageing and curb unnecessary energy waste.
5. Installation Guidelines
Suitable for pipe wrapping, cavity fill and external pipe protection, compatible with overhead, buried and equipment-fixed piping under standard international construction practices.Use uncoated bare pipe only for dry, concealed indoor runs; select foil-faced stock or add separate waterproof layers for buried, damp or fully exposed outdoor pipework. Stagger connecting joints to remove straight through gaps and seal all key seams with adhesive. Cut cleanly with purpose-made tools and secure firmly using cable ties or clamps. Fit extra outer protective casing for pipes running long-term at high temperatures or exposed fully outdoors.Installation manuals and video tutorials are available upon request.
6. Packaging, Shipping & MOQ
All goods packed in export-grade moisture-resistant sacks, cartons and export pallets to avoid damp damage and transit knocks during sea and land freight. We accept both full container and less-than-container loads.Standard sizes kept in stock with a minimum order of one pallet; small trial orders, bulk project supplies and flexible OEM customisation are all welcome. We adjust minimum order quantity and lead times for bespoke dimensions. Customers can request formal quotations, test certificates, CE paperwork and tailored project solutions anytime.
7. FAQ
Q1: Suitable for continuous high-temperature steam pipe?A1: Peak temperature resistance hits 600°C, with safe continuous service below 400°C, making it suitable for most common industrial steam pipeline insulation. For low-temperature cold chain pipelines, we recommend Polyurethane Rigid Foam Pipe.
Q2: Must use foil cladding outdoors?A2: Not mandatory but highly recommended. Outer foil improves UV, waterproof and anti-age performance; uncoated pipe works best for cost-controlled hidden indoor installation.
Q3: Thickness selection tips?A3: 30–50mm for chilled refrigerant and general water supply pipes; 50–60mm for building heating and regular industrial process piping; 60–80mm heavy grade for high-temperature steam and externally laid anti-freeze pipelines.
Q4: Is it prone to water absorption?A4: Factory hydrophobic treatment keeps normal water absorption very low to resist condensation. Additional external waterproof wrapping is required for pipes permanently submerged in water.
Q5: Support customized sizes?A5: Full custom sizing available for inner diameter, wall thickness and finished length to match unique on-site pipe dimensions.
8. Product Summary
A1 fire-rated high-density preformed pipe insulation solves typical flaws seen on traditional pipe wrap such as poor sealing, weak moisture resistance and premature ageing.Made via precision rolling and controlled curing, the product combines reliable fire safety, strong energy saving, frost defence, waterproofing, weather resistance and noise reduction. Complete standard sizing, flexible OEM options and straightforward pipe insulation wrap fitting make it a cost-effective inorganic insulation choice for global industrial, HVAC and municipal piping energy-saving, fireproofing and anti-freeze upgrade works.
