Can 304 manual pallet trucks be immersed in seawater for long periods?

2026-08-31 0 Leave me a message

304 stainless steel manual pallet trucks feature general anti-corrosion and rust-proof performance, yet they are not suitable for long-term immersion in seawater or high-salt environments. Why is that? Hebei Shengyu Lifting Manufacturing Factory briefly explains in the following content:

Seawater contains a large amount of chloride ions, which destroy the passive protective film on the surface of 304 stainless steel, penetrate the metal surface and cause pitting corrosion, gradually forming rust spots and corrosion pits. Salt from seawater tends to accumulate in gaps of metal welds, screws, rotating shafts and pin shafts on manual pallet trucks, and corrosion firstly occurs at these positions.

After long-term immersion, the frame, hydraulic cylinder and wheel shaft will be gradually eroded, resulting in rust and cracking. Exposed to seawater salt, hydraulic seals will age and get damaged, causing oil leakage and pressure loss, and leading to failure of lifting and handling functions. Sea salt seeping into wheel bearings causes jamming or seizure, threatening operation safety.

Even if rinsed after use, residual salt in gaps keeps triggering corrosion. For seawater working conditions, 316 stainless steel is preferred. The 304 version is only suitable for short-term seawater exposure. Rinse it with clean water and dry immediately after use. Long-term immersion and storage are strictly prohibited.

Hebei Shengyu provides custom-built manual pallet trucks in various sizes and styles, with long-term overseas export experience.

For reliable quality, peace of mind and customized solutions, Hebei Shengyu is your ideal choice.