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Glass Wool Pipe
- Density: 40-80 kg/m³
- Raw materials: Melten glass
- Size: Can be customized
- Asbestos: 100% Non Asbestos
- Function: Fireproof, Thermal insulation, Sound absorption
- Certification: ISO9001/ISO14001/ISO45001/ISO50001
- Samples: Provide you free samples for testing
China’s High‑Quality Glass Wool Pipe Supplier
Reliable partner for bulk pipe insulation solutions worldwide
Why choose Jianhong Refractory?
If you’re in search of the finest Rockwool Blanket/Felt for optimal solutions to serve your clients, look no further than Jian Hong Refractory. Our meticulous practices ensure the delivery of top-tier Rockwool Blanket/Felt.
Low MOQ
Jian Hong Refractory offers flexible production, accommodating orders from 1 to 10,0000 units on demand.
Fast delivery
Our mature production line facilitates 24/7 operations, enabling rapid turnaround and prompt delivery.
Competitive Price
We guarantee the most competitive prices while maintaining the highest quality standards compared to other suppliers.
Expert Production
Equipped with three modern production lines, our facilities ensure consistent quality and timely delivery, setting us apart from others in the industry.
Satisfaction Assurance
With a focus on refractory product quality and clear communication, we ensure that every step is streamlined for the ease and satisfaction of our clients.
Comprehensive Product Range
Beyond high alumina bricks, our portfolio includes castables, insulation bricks, ceramic fiber products, and refractory raw materials, providing a one-stop solution unlike competitors with limited ranges.
1 Refractory Raw Materials
2 Crushing and Grinding
3 Screening and Mixing
4 Formulation and Batching
5 Molding and Shaping
6 Drying
7 Pre-Firing Inspection
8 Firing in Kiln
9 Firing Completed
10 Final Quality Inspection
11 Packaging
12 Transport and Delivery
The Ultimate Buyer’s Guide: How to Purchase Glass Wool Pipe
Are you in the market for Rockwool Blanket/Felt ? Look no further.
This all-inclusive buyer’s guide provides you with crucial insights into Rockwool Blanket/Felt, which find applications in commercial residential industry, Houses and buildings industry, marine industry, chemical industry and other insulation, fireproofing, sound control industries. Whether you’re contemplating importing them for your projects or planning local distribution, this guide furnishes invaluable information to guide your decision-making process.
Chapter 1
What is Glass Wool Pipe?
Pre-formed pipe insulation for thermal, acoustic, and fire-safe applications
Glass Wool Pipe is a cylindrical insulation product made by forming glass fibers into rigid pipe sections. Designed for insulating pipelines carrying hot or cold fluids, it provides excellent thermal resistance, sound absorption, and fire protection. Lightweight, easy to install, and typically faced with aluminum foil, it is ideal for HVAC systems, industrial piping, and process lines. Its durability and performance make it a trusted solution for energy-saving insulation in construction and manufacturing sectors.
Chapter 2
Features of Glass Wool Pipe
Optimized insulation performance in a convenient pipe form
- Ultra-Low Thermal Conductivity:
≤0.042 W/(m·K) , minimizing heat loss in hot/cold piping systems. - Fireproof Performance:
Class A1 non-combustible (ASTM E136), preventing flame spread in emergencies. - Moisture Repellent:
Hydrophobic treatment resists condensation, ideal for humid environments. - Lightweight Design:
Easy to install on curved or straight pipes, reducing labor time and costs. - Sound Absorption:
Dampens noise from fluid flow, creating quieter industrial and building spaces. - Chemical Resistance:
Withstands corrosion from mild acids/alkalis, extending pipe lifespan.
Chapter 3
Specifications of Our Glass Wool Pipe
| ITEM | SPEC | |
|---|---|---|
| Density | 40-80 kg/m³ | |
| Length | AVAILABLE SIZE | 1m |
| Inner Diameter | 22-720mm | |
| Thickness | 25-100mm | |
| Facing | Aluminum foil, FSK, PVC, Fiberglass mesh, etc. | |
| Application | All kinds of pipes (including: refrigeration, hot water, steam) insulation system | |
| Remark | Customized products are available on consult | |
Chapter 4
Application of Glass Wool Pipe
Versatile insulation for HVAC, industrial, and energy systems
1. HVAC Piping Systems
- Applied to air-conditioning chilled water lines to reduce thermal loss and prevent surface condensation in commercial buildings.
- Used on heating pipelines in hotels and offices to maintain temperature efficiency and lower energy bills.
2. Industrial Process Piping
- Insulated over hot steam pipes in chemical plants to ensure process stability and worker safety.
- Installed on low-temperature process lines in food factories to minimize energy waste and avoid condensation.
3. Fire-Safe Mechanical Rooms
- Wrapped on pipelines in boiler rooms to enhance passive fire protection and delay flame spread.
- Applied in emergency areas such as hospital basements for added fireproofing and thermal shielding.
4. Refrigeration & Cold Water Pipes
- Used on ammonia or glycol lines in cold storage warehouses to prevent heat gain and protect cooling systems.
- Applied to water distribution lines in marine vessels to reduce noise and maintain pipeline insulation integrity.
Chapter 5
Quality Assurance for Glass Wool Pipe
Henan Jianhong Refractory strictly adheres to ISO 9001 quality standards, utilizing advanced testing equipment for comprehensive inspections. Every batch of our Glass Wool Pipe undergoes rigorous testing, ensuring it meets global quality benchmarks and your exacting requirements for reliability, durability, and performance.
The key quality tests typically include:
| Inspection Category | Inspection Item | Inspection Content | Inspection Method |
|---|---|---|---|
| Basic Appearance | Surface Quality | Check for cracks, holes, obvious stains, agglomeration, or exposed fibers; ensure the surface is flat. | Visual inspection (under natural light or standard light source). |
| Edge & Corner Condition | Check for edge breakage, corner damage, or irregular cutting; ensure edges are neat. | Visual inspection and ruler measurement. | |
| Dimensional Accuracy | Length/Width | Measure actual length and width, check if they meet the specified tolerance range (usually ±5mm for common specifications). | Use a steel tape measure (accuracy ≥1mm) to measure at 3 different positions and take the average. |
| Thickness | Measure thickness at multiple points (≥5 points evenly distributed), check if it meets the tolerance requirement (usually ±5% of the nominal thickness). | Use a thickness gauge (with a pressure of 2kPa±0.5kPa). | |
| Physical Performance | Bulk Density (Density) | Measure the mass per unit volume, check if it is within the specified range (e.g., 48-120 kg/m³ for common products). | Cut a sample of regular shape, weigh it with a balance (accuracy ≥0.1g), and calculate volume. |
| Thermal Conductivity | Test the heat transfer performance at 25℃ (average temperature), ensure it meets the standard (e.g., ≤0.044 W/(m·K) for products with density ≥80 kg/m³). | Use a heat flow meter or guarded hot plate method. | |
| Compressive Strength | Test the maximum pressure the product can bear without excessive deformation (compression deformation ≤10%), meet the specified value (e.g., ≥40 kPa). | Use a universal testing machine, apply pressure at a speed of 10mm/min. | |
| Tensile Strength (Vertical & Horizontal) | Test the resistance to pulling force, ensure it meets the requirement (e.g., ≥7.5 kPa for vertical tensile strength). | Use a tensile testing device with a constant speed of 50mm/min. | |
| Water Absorption (Volume Ratio) | Test the volume percentage of absorbed water after immersion, meet the standard (e.g., ≤5% for water-repellent products). | Immerse the sample in water for 24h, calculate the volume of absorbed water. | |
| Slag Ball Content | Test the mass percentage of slag balls (diameter >0.25mm), meet the requirement (e.g., ≤10% for high-quality products). | Sieve the sample, weigh the slag balls retained on the sieve. | |
| Combustion Performance | Combustion Grade | Verify the combustion performance grade (e.g., A1 or A2 grade，non-combustible), check for flame spread, smoke production, or dripping. | Use a cone calorimeter or vertical burning test device. |
| Hot Load Shrinkage Temperature | Test the temperature at which the product shrinks by 4% under heat load, meet the standard (e.g., ≥600℃). | Heat the sample at a rate of 5℃/min, monitor shrinkage with a displacement sensor. | |
| Chemical Performance | pH Value | Test the acidity/alkalinity, ensure it is within the range (e.g., 7-9 for neutral products). | Use a pH meter to test the extract solution of the sample. |
| Chloride Ion Content | Test the mass percentage of chloride ions, meet the limit (e.g., ≤0.03%). | Use ion chromatography to analyze the extract solution. | |
| Average Fiber Diameter | Test the average diameter of rock wool fibers, meet the requirement (e.g., ≤7μm). | Use a microscope to measure fiber diameters (≥100 fibers), calculate the average. | |
| Safety & Environmental Protection | Formaldehyde Emission | Test the release amount of formaldehyde, meet the limit (e.g., ≤0.1mg/m³). | Use the environmental test chamber method. |
| Radionuclide Limit | Test the specific activity of radionuclides (Ra-226, Th-232, K-40), meet the A Category Requirements (radioactivity index Iγ≤1.0). | Use a gamma spectrometer to measure the radionuclide content. | |
| Packaging & Labeling | Packaging Integrity | Check if the packaging is intact, moisture-proof, and anti-collision; ensure no damage during transportation. | Visual inspection, check for tears, water stains, or looseness. |
Through this meticulous testing process, we ensure that our Glass Wool Pipe products meet the highest standards of quality, reliability, and performance, making them ideal for various applications in various industries.
Chapter 6
Chapter 7
In Summary
Glass Wool Pipe is a cost-effective, pre-formed insulation solution designed to protect piping systems from heat loss, noise, and fire. Lightweight, fire-resistant, and easy to install, it meets the needs of commercial buildings, factories, and energy facilities. Ideal for global buyers seeking reliable performance and quality compliance.
Henan Jianhong Refractory Materials Co., Ltd. specializes in manufacturing and exporting top-grade Glass Wool Pipe. With 20+ years of experience, we serve contractors, distributors, and industrial clients across North America and Europe. Offering customized sizes, competitive pricing, fast delivery, and OEM support, we help you secure long-term insulation supply success.
Ready to elevate your operations?
Contact Henan Jianhong Refractory Materials today—let us be your reliable source for durable, high-performance refractory solutions.
