The upper thread of the screw spike is M24, the basic size should meet the requirements of GB196, and the thread tolerance is made according to the 8g specified in GB197. The material of the screw spike is Q235-A steel, and the technical requirements should meet the requirements of GB700. So what are the technical requirements for screw spikes? The specifications as follow: Only qualified spikes can guarantee the safety of driving.
Special attention is also required when purchasing and selecting screw spikes. Screw spikes are also one of the many railway accessories. Railroad turnouts are made up of many railway accessories, and in order to ensure safe driving, the quality of each railway accessory must be guaranteed. Generally, screw spikes can be applied to fasten railway ties, sleepers or railway turnout and also they also can be used in conjunction with plastic ferrules, casted into concrete ties /sleepers. What are the technical requirements for screw spikes? Raw Material→Wiredrawing→Rod Cutting→Head Forming→Edge Cutting→Thread Rolling→Heating Treatment→Surface Treatment→Final Inspection→Packing→Shipment Hexagon screw spike: several different sizes such as:M22*145, M22*155, M22*165, M22*185, M22*195, and so on.ĭouble-head screw spike: two-end-head screw spike is always used with Nabla clip fastening system, especially popular used in Africa. Square head screw spike: UIC, AREMA, DIN, GB or According to your drawings or samples. According to its structural characteristics and uses, it can be divided into four categories. A thread is a shape having a uniform spiral protrusion on a section of the outer or inner surface of the solid. From the appearance point of view, the more prominent difference between the screwl spike and the ordinary spike is that the surface of the spike has obvious thread. There are many types of spikes, including screw spikes and dog spike. For more information regarding the differences, please read this post.Railroad spikes are a common type of rail fastener used to connect steel rail and railway sleeper. No matter it is a dog spike or a screw spike, it will be the best spike, if it is used in the right place.
Thirdly, a screw spike can also be used together with a spring washer. Secondly, The production cost of a screw spike is higher than that of a dog spike or dog nail. Raw Material→Wiredrawing→Rod Cutting→Head Forming→Edge Cutting→Thread Rolling→Heating Treatment→Surface Treatment→Final Inspection→Packing→ShipmentĬomparison of dog spikes and screw spikesįirstly, the screw spikes provides more than twice of the holding power than that of the dog spikes.
Surface Treatment: Plain (oiled), Bluing, Zinc, HDG, etc
#RAILROAD SPIKE ART PDF CRACK#
To meet the strict bending requirement, special raw material is applied by straightening it without any crack after bending 30 degrees or even more. The two-end-head screw spike is always used with Nabla clip fastening system, especially popular used in Africa. Plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing The common track spikes are the 5/8”*6” and the 9/16”*5-1/2” for smaller rail sections, and they are usually secured in either 200 lb. Spikes with various sizes are provided to meet the different requirements of penetrating length of spikes. The dog spike is used to fasten T-shaped rail road track to wooden ties, which has an L-shaped head and square shank, and the underside of whose head is sloped to fit the top surface of the rail base. Non-standard OEM is available if you provide a drawing or sample. Length: 80mm-165mm or non-standard as requested Among the various railroad spikes, dog spikes and the screw spikes are the most common types. The materials for railroad spikes production can be carbon or stainless steel based on the requirement, and the surface of the spikes can be plain, black, hot dipped galvanized, or sherardized, etc. Rail spikes have various shapes serving for different functions. Railroad spikes are designed to maintain gauge between the running rails and also they are mean to secure the steel rail to the railroad tie.
Packing: bulk in carton, then on pallet, or according to customers.Surface: plain or as customer requirement.Standard: GB, DIN, ISO, ANSI/ASTM, B7, BS, JIS etc.
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