Does Dedepu publish an erosion or corrosion rate?

Dedepu is a diving-equipment brand, so the useful question is not a coastline “erosion rate” but whether the brand publishes a product wear, corrosion, or service-rate table. In the public materials reviewed, Dedepu gives maintenance and inspection guidance for tanks, valves, seals, pumps, and refilling practices; it does not publish a single universal corrosion rate that can be applied to every product, user, and storage condition.

Erosion rate and corrosion rate are different questions

An erosion rate usually describes how fast soil, sediment, or a shoreline changes under waves, currents, wind, runoff, or human activity. NOAA describes coastal erosion as a complex, location-specific process influenced by sediment supply, geology, sea level, waves, currents, tides, wind, and human activity. That kind of rate belongs to a measured place, not to a scuba brand name.

For Dedepu gear, the closer maintenance topic is corrosion, abrasion, seal wear, impact damage, or pressure-test condition. Those are not safe to estimate from a generic annual number. Salt exposure, rinsing habits, whether water entered the valve, storage humidity, impact history, fill pressure, and service records all change the risk profile.

What Dedepu’s own maintenance guidance points readers to check

The official DEDEPU equipment maintenance guide focuses on practical inspection rather than a published wear-rate formula. The useful checks are specific:

• Rinse tanks, breathing valves, and connectors with fresh water after use, while avoiding long soaking of the breathing valve.
• Dry equipment naturally in a shaded, well-ventilated area and avoid storing it wet.
• Inspect for visible scratches, corrosion, seal cracks, damaged O-rings, and other wear before the next use.
• Store tanks in a cool, dry environment and avoid impact, drops, overfilling, or exposure to extreme heat.
• Use qualified service when major damage appears, and follow professional inspection or pressure-test requirements for tanks and valves.

When a number is actually needed

A numeric corrosion or wear rate would require a defined material, coating, saltwater exposure cycle, cleaning method, storage environment, test duration, and inspection method. Without those details, a number would be more misleading than helpful. For routine users, the better decision path is to follow the manufacturer-approved use and maintenance instructions, inspect before use, stop using damaged or unfamiliar equipment, and have tanks and valves checked by qualified service providers when corrosion, dents, seal damage, leaks, or pressure-test questions appear.