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Quality Certification
Our company has passed work safety standardization certification, ISO 9001-2008 international quality management system certification, OHSAS 18000 occupational health and safety management system certification, as well as Germany TUV "GS" product safety certification, IIW international welding certification, SGS certification, EU Construction Products Regulation (CPR) certification, and UK BS 1139 certification.
Advanced Production Equipment
Our factory is equipped with CNC shearing machines, fully automatic welding robots, semi-automatic gantry welding machines, punching machines, hot-dip galvanizing production lines, shot blasting cleaning machines, etc.
Global Markets
It launched export business in 2024, with products sold to Canada, Australia, the five Central Asian countries, the Middle East, Southeast Asia and other regions.
End-to-End Service
The company's professional technical team provides comprehensive, closed-loop services covering every stage—from initial solution design consultation, customized technical adaptation, and on-site installation guidance, through to post-implementation operations and maintenance support.
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Density: |
100–180 kg/m³ |
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Thickness: |
20mm – 150mm (customizable) |
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Thermal Conductivity: |
0.035 W/m·K |
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Fire Rating: |
Class A1 (Non-combustible) |
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Moisture Absorption: |
≤1% |
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Dimensions: |
Customizable to meet project requirements |
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Application Temperature: |
Up to 650°C (1202°F) |
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Acoustic Performance: |
NRC ≥ 0.90 |
Rock wool is a fibrous insulation material manufactured from natural volcanic rock, typically basalt, combined with recycled slag from the steel industry. These raw materials are melted at extremely high temperatures and then spun into fine fibers, creating a dense, wool-like structure.
Thermally efficient:
Because Rock wool is very dense, it has a higher R-value per inch compared to fiberglass. This means it offers better insulation per inch of thickness.
01
Fire Resistant:
Rock wool has excellent fire-resistant capacity, withstanding temperatures over 1,000°C. It is non-combustible and adds fire protection to buildings.
02
Absorbs sound:
Rock wool has excellent sound absorption capabilities, reducing noise transmission through ceilings, walls, and floors.
03
Resists moisture:
Rock wool has the unique qualities of being vapor-permeable and water-repellent. It allows your home to "breathe" while preventing mildew and mold.
04
Sustainable:
Because Rock wool is made from natural and recycled materials, it's considered environmentally friendly. It also outlasts many other building materials.
05
Building Energy Efficiency
Rock wool is utilized as a thermal insulation material in construction, particularly in public, high-rise, and residential buildings where stringent fire safety requirements apply.
Industrial Insulation
Rock wool is also used in industrial applications to insulate pipes, boilers, tanks, and other equipment. It helps to conserve energy, prevent heat loss or gain, and ensure process stability in industrial facilities.
Wall Applications
Rock wool effectively absorbs sound due to its dense and porous structure. It is commonly installed in walls, ceilings, and floors to reduce noise transmission in homes, offices, theaters, and industrial plants.
Marine and Automotive Applications
Rock wool’s resistance to moisture, heat, and noise makes it suitable for marine and automotive insulation. It is used to insulate engine compartments, exhaust systems, and other areas where temperature and noise control are important.
Agricultural Applications
In agriculture, rock wool is used as a soilless growing medium for hydroponics. Its porous structure retains water and nutrients while allowing excellent aeration for plant roots.
The process of manufacturing rock wool involves the following steps:
Melting: The basalt or diabase rocks are heated to extremely high temperatures, typically around 1500 to 1600 degrees Celsius (2732 to 2912 degrees Fahrenheit), in a furnace. The intense heat melts the rocks, turning them into a molten state.
Spinning: Once the rocks are melted, the molten material is fed into a spinning machine. Within the spinning machine, the molten material is rapidly spun and ejected through small nozzles. This spinning process creates fine fibers of rock wool.
Binding: In some cases, a binding agent may be added to the spinning process to help the fibers adhere and form a cohesive mat. The binding agent can be an organic or inorganic material that acts as a binder between the rock wool fibers.
Curing: After the fibers are formed and bound, they are subjected to heat treatment to cure and stabilize the insulation material. This helps the rock wool maintain its structural integrity and desired properties.
Cutting and Shaping: Once the rock wool has cured, it is cut and shaped into various forms, such as rolls, batts, boards, or loose-fill. These forms can be further processed or packaged for distribution and use in construction and insulation applications.
1. Clear all debris from the construction area, and ensure that the space is well-ventilated and remains dry.
2. Measure and cut the rock wool, making the dimensions slightly larger (approximately ¼ to ½ inch) during cutting so that it can be secured in place via friction, thereby eliminating any gaps.
3. Press the insulation into place, ensuring a snug (but not compressed) fit. The material should fill the cavity, touching all sides.
4. Use sealant or foam to fill any small gaps around the insulation. Make sure you don’t see any areas for air leaks.
5. Depending on where you’ve installed the insulation, you may need to cover it with a vapor barrier and/or drywall. Check your local building codes and the manufacturer’s instructions.
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Warranty |
3 years against manufacturing defects |
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Delivery Time |
15–25 days depending on quantity |
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Payment Terms |
30% deposit, 70% before shipment |
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Support |
Technical drawings and installation guidance provided |
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MOQ |
100sets (mixed models accepted) |
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Packaging |
We use steel strapping reinforcement and standard export pallets for packaging. We can also package the goods according to customer requirements. |
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Shipping Method |
Sea or land freight, in accordance with customer requirements. |
The company has an independent production base located in Tangshan, Hebei Province, covering an area of 300000 square meters.
As one of the leading rock wool manufacturers and suppliers in China, we warmly welcome you to buy cheap rock wool in stock here from our factory. If you have any enquiry about customized service, please feel free to email us.
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