Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of railway screw spike in China, also supports customized service with low price. Please feel free to buy cheap railway screw spike made in China here from our factory.
Railway Screw Spikes Factory-GNEE
A trusted railway Screw spike supplier---GNEE Rail
As we can see, there is screw on the surface of screw spike, it usually used with a plastic sleeve which is casted in the concrete sleepers. GNEE Screw spike can be classified into four types, Ss series Sleeper Screw, Square head screw spike, Hexagon screw spike and Double-head screw spike.
Comparison of Dog Spike and Screw Spike
1. Shape and Classification
Just look at the appearance of the two different spikes, we can see apparently that dog spike looks like a large nail with a dog lug head, while screw spike is with many screws on the surface of shank. The shape of dog spike is simple, and the classification of screw spike is various and the shape diversified.
2. Fastening Sleeper
Dog spike is only used in wooden sleepers, nevertheless, screw spike is used on concrete sleepers. With the trend that concrete sleepers more and more widely used in recent railway construction, screw spike is more popularized and the requiring number is increasing.
3. Inserting Method
In the past times, dog spike is usually driven into the wooden sleeper with a heavy hammer by hand. But now the manual work has been replace by the machine "spike driver". The screw spike is usually fastened to the concrete sleeper through anchoring technology.
4. Fastening power
Screw spike is more tightened than dog spike. The fastening power of screw spike is more than twice of dog spike. In addition, screw spike is usually used with the plastic sleeve.
5. Costing
The manufacturing cost of screw is higher that of dog spike, because the manufacturing process of screw spike is more complex than dog spike.
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