Performance Of Railway Threaded Spikes

Railway wooden sleeper screw spikes and concrete sleeper screw spikes are the most commonly used spikes in railway construction. What are the similarities and differences between the two in various aspects?

Both are key fasteners used in railway track construction to connect rails and sleepers, and play a role in fixing rails and maintaining track stability.

1. Some technical specifications of threaded spikes:

(1) The raw material of threaded spikes is Q235A or carbon structural steel or hot-rolled round steel with performance not lower than that of Q235A, and the performance should comply with the provisions of GB/T700.

(2) There should be no folding at the connection between the head of the threaded spike and the nail rod; the head flash should not be greater than 1mm; the thread should be uniform and complete: the surface should be smooth and there should be no cracks and scratches, overlaps and rust that affect use.

(3) The minimum actual tensile force of M22 threaded spikes should not be less than 65 kN, and the minimum actual tensile force of M24 threaded spikes should not be less than 80 kN.

(4) The surface of the threaded spikes should be rust-proofed.
(5) The threaded part of the screw spike should not have cracks after the 15° cold bending test.

II. Some technical specifications of the screw spike:

(1) The raw material of the screw spike should be Q235-A in accordance with GB/T 700 or other materials with performance not lower than that.

(2) The upper thread of the screw spike is M24, and the basic size should comply with GB/T 196.

(3) The surface of the screw spike should not have dents, burrs, flash, burns and oxide scale that affect its use.

(4) Tensile performance: The screw spike should not break after being subjected to a tensile force of 130kN.