A screw spike is used to fix the tie plate or fasten the rail to the sleeper with the help of a plastic dowel. Compared with other spikes, screw spike has greater power and the manufacture cost is higher. According to different thread profiles, lengths, diameters and drive heads, screw spike can be classified into Ss series sleeper screw, square-head screw spike, hexagon screw spike and double-head screw spike.
Although rail screw are designed for extended service life, regular inspection and maintenance remain essential. Routine maintenance primarily involves visual checks for significant corrosion, deformation, or loosening. Particular attention should be paid to the condition of the threaded section, as severe corrosion can compromise the spike's holding performance. chair screw produced by GNEE RAIL utilize premium materials and undergo stringent quality inspection protocols throughout manufacturing and production. We also apply anticorrosion surface treatments to enhance durability, ensuring our collar bolt perform reliably across diverse environments.
When loosening is detected, immediate tightening using calibrated tools is recommended to prevent head damage from mismatched equipment. Severely corroded or deformed spikes should be replaced. During replacement, fully remove the old spike, inspect the sleeper hole condition, and repair if necessary before installing a new spike.
In humid or highly corrosive environments, inspection intervals may be shortened. Even railway spikes showing no visible damage should be replaced according to prescribed service life limits to prevent material fatigue-induced unexpected failures. Maintenance records must be diligently archived to inform future upkeep.
Beyond standardized spike products, GNEE RAIL offers customization in dimensions and surface treatments. Should you require professional guidance on spike maintenance, replacement procedures, or product selection, contact GNEE.
