The Nemesis of Extreme Corrosion: OFSCN® 300°C SST High-Temperature Fiber Optic Cable and Special Alloy Packaging

In industrial sensor applications, high temperature is often not the only enemy. In the salt spray of offshore platforms, the acidic environments of oil and gas wells containing hydrogen sulfide (H2S), or chemical reactors filled with strong acids and bases, corrosion is the primary culprit behind premature monitoring system failure. If the jacket is penetrated by corrosion, the internal optical fibers will be destroyed within minutes.

Beijing Dacheng Yongsheng Technology Co., Ltd. provides global customers with a range of special alloy packaging solutions—from 316L to Alloy 825—through its OFSCN® 300°C SST series. This ensures that distributed sensing remains rock-solid even in the harshest chemical environments.

1. The Art of Jacketing Materials: Custom "Armor" on Demand

Different corrosive environments require different defense strategies. We provide more than just standard products; we offer material science-grade customization:

• 316L Stainless Steel (Standard Configuration): Featuring excellent pitting resistance, it is the preferred cost-effective choice for most industrial high-temperature environments and freshwater monitoring.
• Alloy 825: Designed specifically for extremely high concentrations of chloride ions (as found in seawater) and acidic environments. Rich in nickel, chromium, and molybdenum, it effectively resists pitting, crevice corrosion, and stress corrosion cracking.
• Hastelloy (Optional Customization): Provides the ultimate anti-corrosion barrier for extreme acidic or strongly oxidizing chemical conditions.

2. 100% Airtightness: A Physical Defense Against Chemical Attack

Corrosion resistance depends not only on the type of material but also on the manufacturing process.

• Seamless Laser Welding: The OFSCN® 300°C SST utilizes longitudinal seamless laser welding technology to ensure the metal jacket is completely sealed. The absence of weld weaknesses or mechanical joints means chemical fluids cannot erode the interior through leakage paths.
• Resisting "Stress Corrosion": Our alloy tubes undergo a precise stress-relief process. This ensures that during 300°C thermal cycling, the metal jacket will not develop micro-cracks in corrosive media due to internal stress.

3. Global Real-World Cases in Extreme Environments

This "high-corrosion-resistance" fiber optic cable is active at the most demanding job sites:

• Offshore Oil Platforms: In high salt spray and high humidity marine atmospheres, it monitors the structural integrity of subsea pipelines, ensuring long-term protection against seawater corrosion.
• High-Sulfur Gas Wells (Sour Environments): In deep wells containing high levels of hydrogen sulfide (H2S) and carbon dioxide (CO2), the distributed fiber still stably transmits temperature and pressure data.
• Fine Chemicals: Embedded in reactor linings, it monitors temperature fields during intense chemical reactions to prevent out-of-control reactions caused by localized overheating.

4. Conclusion: Durable Monitoring Amidst Challenges

Safety monitoring should not retreat in the face of harsh environments. Beijing Dacheng Yongsheng Technology Co., Ltd. consistently adheres to the philosophy that "materials serve performance."

By choosing the OFSCN® 300°C SST High-Temperature Fiber Optic Cable, you receive more than just a 300°C temperature rating—you gain absolute confidence in handling strong acids, high salinity, and highly corrosive environments. No matter how harsh the environment, Dacheng Yongsheng always guards your data security.

Contact us to customize your anti-corrosion sensing solution:

• Company Name: Beijing Dacheng Yongsheng Technology Co., Ltd.
• Official Website: https://www.ofscn.org
• Product Details: https://www.ofscn.org/dofs/300-c-sst-optical-cable.html