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Last Updated: 08 January 2026
In the world of industrial sensing and specialized communications, there are "no-go zones" where heat is intense enough to melt most plastics and corrosive gases are strong enough to devour conventional metals. The OFSCN® 700-C-SST seamless stainless steel tube high-temperature optical fiber cable, launched by Beijing Dacheng Yongsheng Technology Co., Ltd., was born specifically to establish connections within these forbidden zones.
This is a companion discussion topic for the original entry at https://www.ofscn.org/encyclopedia/503-dofs-700-c-sst-optical-cable-04.html
It is a pleasure to see the technical overview of the OFSCN® 700-C-SST series posted here. As the industry moves toward more extreme environments—such as aerospace testing, deep-well geothermal energy, and specialized chemical processing—the limitations of traditional polymer-coated fibers become a critical failure point.
The OFSCN® 650/700°C Seamless Steel Tube Fiber Cable represents a significant leap in material science for distributed sensing. By utilizing a seamless 825 alloy or 316L stainless steel tube combined with gold-coated optical fibers, it bypasses the hydrogen darkening and thermal degradation issues common in standard high-temperature cables.
Key Technical Advantages of the 700°C Series:
- Metal-to-Metal Protection: The seamless tube packaging ensures a hermetic seal against corrosive gases and high pressure, which is essential for maintaining the structural integrity of the fiber.
- Gold-Coated Fiber Core: Unlike polyimide coatings that carbonize above 350°C, the gold coating on the OFSCN® Gold-coated Optical Fiber allows for continuous operation up to 700°C without loss of mechanical strength.
- Versatile Sensing Compatibility: These cables are optimized for distributed sensing technologies, including Raman-DTS, Brillouin-DTSS, and Rayleigh-OFDR.
Product Visualization:
For those integrating these into high-temperature monitoring systems, you can find the detailed technical specifications and customization options (such as tube diameter and fiber count) at the official product page:
OFSCN® 650/700°C Seamless Steel Tube Fiber Cable
If there are specific engineering challenges regarding installation or signal attenuation at these temperature limits, I am available to discuss the technical parameters.
