Nano-Microporous Insulation Board – Ultra-Low Thermal Conductivity for Steel Ladle, Tundish & Torpedo Car

Microporous panels for the steel industry are engineered for high-temperature applications, offering exceptional thermal efficiency with conductivity lower than still air. These advanced materials reduce heat loss and energy consumption, improve the working environment, and extend equipment lifespan. With a thinner insulation layer, they optimize space by increasing internal volume or reducing equipment size. Additionally, they minimize heat retention, enhancing the rate of temperature rise and overall operational efficiency.

Nano-Microporous Insulation Board — Ultra-Low Thermal Conductivity for Steel Ladle, Tundish & Torpedo Car Backup Insulation

First and foremost, Tarco Industry manufactures nano-microporous insulation boards in our own factory. In other words, we are not a trading company. Specifically, we are the production source.

As a result, we deliver factory-direct pricing, consistent board quality, and fast delivery. Similarly, this applies to all your steel ladle, tundish, torpedo car, and molten metal transfer vessel insulation projects.

In addition, we produce these nano-porous super insulation boards from fumed silica (nano-SiO₂) with ceramic fiber reinforcement and opacifiers. Meanwhile, they achieve an ultra-low thermal conductivity of 0.020 W/m·K at 500°C, and comply with ISO 18959:2025. Therefore, steel plant engineers rely on them for backup insulation where space is limited and thermal performance is critical.

Nano-microporous insulation board for steel ladle, tundish and torpedo car backup insulation by Tarco Industry
Tarco Industry Nano-Microporous Insulation Board — ultra-thin, ultra-low thermal conductivity board for steel industry molten metal transfer vessels

Technical Specifications of Nano-Microporous Insulation Boards

To begin with, we manufacture our nano-microporous boards in a range of thicknesses and densities. Specifically, the table below summarizes the standard product range.

Nano-Microporous Insulation Board — Standard Product Range
Parameter Specification
Core Material Fumed Silica (Nano-SiO₂) with Ceramic Fiber Reinforcement
Max Operating Temperature 1,000°C (1,832°F)
Thermal Conductivity (500°C) ~0.020 W/m·K
Thermal Conductivity (800°C) ~0.028 W/m·K
Density 280 – 350 kg/m³
Compressive Strength (10% compression) ≥ 0.3 MPa (GB/T 13480-1992)
Standard Thickness 3 mm / 5 mm / 10 mm / 15 mm / 25 mm / 50 mm
Standard Board Size 600 × 300 mm / 1000 × 600 mm / Custom sizes available
Porosity Nano-scale pores < 2 nm (below mean free path of air)
Fire Rating A1 Non-Combustible
Standard ISO 18959:2025, GB/T 17911-2006, GB/T 13480-1992

Material & Physical Specifications for Nano-Microporous Insulation Boards

  • To begin with, we manufacture our nano-microporous insulation boards from fumed silica (nano-SiO₂) as the primary raw material. We mix it with ceramic fiber and opacifiers, then form the board using dry forming technology without adding gel material.
  • Moreover, the board features nano-scale pores smaller than 2 nm. These pores are smaller than the mean free path of air molecules, which significantly reduces heat transfer through the material.
  • Additionally, our boards achieve a compressive strength of ≥ 0.3 MPa at 10% compression, providing structural integrity during installation and service.
  • Furthermore, the boards are available with aluminum foil facing or PE vacuum bag packaging to prevent moisture absorption and enhance handling strength.
  • For special orders, we supply flexible nano insulation panels for curved surfaces such as ladle and tundish shells.
  • Finally, we offer OEM & ODM — we customize density, thickness, dimensions, facing, and packaging according to your specifications.

Why Choose Our Nano-Microporous Insulation Boards for Steel Industry?

In fact, the nano-microporous insulation board is a revolutionary super-insulation material that delivers 3 to 4 times better thermal performance than traditional insulation materials. Furthermore, it is specifically engineered for the steel industry’s most demanding high-temperature applications.

  • First, our boards offer ultra-low thermal conductivity. At 0.020 W/m·K at 500°C, they provide significantly better insulation than ceramic fiber, mineral wool, or calcium silicate boards.
  • Second, they provide space-saving performance. The ultra-thin profile (as thin as 3 mm) allows engineers to increase vessel capacity by up to 10% while maintaining the same outer shell dimensions.
  • Third, they deliver energy savings of 20–50% in steel ladle and tundish applications by reducing heat loss through the lining.
  • Fourth, they ensure thermal stability and dimensional consistency. The boards maintain their insulation properties at high temperatures without significant shrinkage.
  • Finally, they provide environmental and safety benefits. The boards are A1 non-combustible and contain no organic binders that would emit harmful fumes during installation or first heat-up.

Applications & Industries for Nano-Microporous Insulation Boards

  • For instance, in steel ladles, our boards provide backup insulation behind the working lining to reduce thermal cycling and extend lining life.
  • Also, in tundishes, they minimize temperature variations to enhance the casting process and steel quality, while reducing downtime.
  • In addition, for torpedo cars and transfer ladles, they provide thin, lightweight insulation that improves thermal efficiency and reduces energy consumption.
  • Furthermore, in electric arc furnaces (EAF), they insulate the shell and roof to reduce heat loss and improve energy efficiency.
  • Lastly, in degassers and other molten metal vessels, they provide reliable backup insulation for demanding high-temperature service.

About Our Factory — Direct Manufacturer of Nano-Microporous Insulation Boards

In fact, Tarco Industry operates a modern manufacturing facility. Specifically, we dedicate it to the production of nano-microporous insulation boards and high-performance super insulation products.

Furthermore, we complete every step in our own factory. This includes nano-SiO₂ preparation, mixing with ceramic fiber and opacifiers, dry forming, baking, cutting, and packaging. Consequently, we do not outsource production. We do not act as a middleman.

In addition, we equip our factory with advanced dry forming lines and precision cutting systems. As a result, we produce high-quality nano-microporous boards with consistent density, uniform pore structure, and reliable thermal performance.

Therefore, whether you need standard boards or custom configurations for specific vessel geometries, Tarco Industry can produce them directly for you.

Factory Direct Advantages

  • First, we are a Manufacturer, Not a Trader. You buy directly from Tarco Industry production lines, eliminating middleman markups.
  • Second, we handle In-House Production. We control nano-SiO₂ synthesis, board forming, and finishing all under one roof for full quality control.
  • Third, we welcome OEM & ODM. We customize density, thickness, dimensions, facing, and packaging.
  • Fourth, we maintain Bulk Production Capacity. We ensure stable output for large steel plant and foundry projects.
  • Finally, we provide Factory Price. We offer competitive direct pricing for distributors, refractory contractors, and OEMs.

How to Install Nano-Microporous Insulation Boards

  1. First, prepare the vessel shell surface. Clean the steel shell to remove dust, oil, and loose material. Ensure the surface is dry and free from moisture.
  2. Then, cut the board. Use a sharp knife or saw to cut the nano board to the required size. The board is easy to cut and shape.
  3. Next, position the board. Place the board against the vessel shell with the aluminum foil facing outward (if applicable).
  4. After that, secure the board. Use high-temperature adhesive or mechanical fasteners to hold the board in place. For curved surfaces, use flexible nano panels.
  5. Finally, install the working lining. Apply the refractory working lining over the nano board. Ensure joints are tight and staggered to prevent heat leakage.

Quality Assurance & Certifications

Furthermore, Tarco Industry manufactures our nano-microporous insulation boards under strict quality control. Specifically, they comply with ISO 18959:2025, GB/T 17911-2006, and GB/T 13480-1992 standards.

As a result, we perform density testing, thermal conductivity testing, compressive strength testing, and pore structure verification. Moreover, we test every production batch before shipment.

  • Additionally, we offer certifications including ISO 9001, CE, and SGS.
  • Similarly, our production capacity reaches 200,000 m² per month.
  • Also, we set the MOQ at 500 m² (negotiable for sample orders).
  • In terms of packaging, we offer cartons on pallets with custom marking, or vacuum-packed for moisture protection.
  • Finally, we deliver within 15–20 business days after order confirmation.

Request a Quote for Nano-Microporous Insulation Boards

In conclusion, we are Tarco Industry. We are a direct manufacturer of nano-microporous insulation boards and high-performance super insulation products for the steel industry.

Therefore, because we produce in our own factory, we offer competitive factory-direct pricing. In other words, you deal with no middleman and no trading company markup.

📩 Contact Tarco Industry now for a free sample or bulk quotation. Additionally, our engineering team can assist you in selecting the right thickness, density, and facing for your specific steel ladle, tundish, or torpedo car application.

Tarco Industry — We Produce, We Manufacture, We Supply Directly.



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