In high-temperature industrial processes, accurate and reliable temperature measurement is the cornerstone of product quality control, operational safety, and energy efficiency. Nitride-bonded silicon carbide (NB SiC) thermocouple protection tubes stand out as a superior solution, leveraging the synergistic advantages of silicon nitride and silicon carbide to excel in the harshest environments. Beyond their exceptional performance, our tailored customization capabilities ensure they seamlessly integrate with diverse industrial setups, making them the preferred choice for global manufacturers.
The applications of NB SiC thermocouple protection tubes span across multiple high-demand industries, driven by their outstanding properties—high-temperature stability up to 1500°C, excellent thermal shock resistance, and strong corrosion resistance . In non-ferrous metal processing, they are indispensable for temperature measurement in aluminum, zinc, copper, and magnesium melting furnaces. Unlike traditional materials, NB SiC does not contaminate molten metals, ensuring the purity of final products while maintaining long-term stability . For the steel and metallurgical industry, these tubes reliably operate in blast furnaces and hot rolling processes, withstanding abrasion from high-velocity dust and scoria .
The petrochemical and chemical sectors benefit greatly from their chemical inertness, which resists erosion by strong acids, alkalis, and toxic gases in coal gasifiers and reaction vessels . They also perform exceptionally well in waste-to-energy plants and incinerators, enduring complex high-temperature flue gas environments containing sulfur and chlorides . Additionally, in ceramic, glass, and heat treatment industries, their low thermal expansion coefficient (4.7×10⁻⁶/°C at 1200°C) enables stable operation during rapid heating and cooling cycles, ensuring precise temperature readings .
Our NB SiC thermocouple protection tubes offer comprehensive customization to meet unique project requirements. In terms of dimensions, we provide flexible outer diameters (8mm to 50mm) and inner diameters (8mm to 26mm), with lengths customizable up to 1500mm or even longer based on drawings . Structural customization includes one-piece blind-end molding for enhanced durability and various mounting options—such as M12×1.5 or M20×1.5 threads, fixed or movable flanges, and grooved designs—to fit seamlessly with existing equipment .
Material composition can also be adjusted, with SiC content ranging from 60% to 80% and Si₃N₄ content from 20% to 40%, balancing performance and cost for specific corrosion or temperature demands . We also offer surface treatments to reduce porosity (down to <1% surface porosity) and improve corrosion resistance, as well as custom packaging for long-distance transportation . Backed by strict quality control and fast delivery (48-hour emergency shipping available), we ensure consistent performance and timely supply.
Choose nitride-bonded silicon carbide thermocouple protection tubes for reliable temperature measurement in harsh environments. Our customization expertise ensures a perfect fit for your industry needs, reducing maintenance costs and downtime. Contact us today to discuss your specifications and get a tailored solution.
Post time: Jan-19-2026
