Boat Spike for Concrete Sleepers 1. Raw Material:carbon steel 2. ... :4.6, 4.8 3. Finish:plain, black, zinc, hdg Boat Spike, also named Dog Spike or Railroad Spike. It's ... contractors in all over the world. 1.Raw Materialcarbon steel, stainless steel, alloy, brass2. Grade4.6, 4.83. Finishplain, black, zinc ...