Polar low-temperature rails
- Material selection: austenitic stainless steel (such as 304L) or high-nickel alloy (such as Invar 36), impact energy ≥ 27J at -70℃.
- Installation challenges: permafrost foundations require heat pipe cooling technology to prevent rail deformation due to freeze-thaw cycles.
Deep-sea crane rails
- High-pressure corrosion resistance: American oil companies (such as Schlumberger) use duplex stainless steel (UNS S31803) rails on deep-sea drilling platforms to withstand pressure at a depth of 3,000 meters.
- Anti-biological attachment: The surface is coated with a silicon-based antifouling coating to reduce the change in friction coefficient caused by the attachment of marine organisms such as barnacles.