Oxide Black 4.6 Grade Railway Ss Series Sleeper Screw Spike With 35# Steel Material
Oxide Black 4.6 Grade Railway Ss series sleeper screw spike with 35# steel material
Types of railroad spikes:
At before, the screw spikes are usually used to fasten the ribbed base plates and sole plates to wood sleepers. With the construction and development of the concrete sleepers, the screw spikes play an important role in railway fastening systems with the help of a plastic dowel. In order to meet the different use and standards of railway tracks, the screw spikes can be classified into so many types. Now all railroad spikes are made out of carbon steels. Through the different specific geographic requirements such as lengths, diameters, drive heads and thread profiles, the railway screw spikes can be classified into four types: Ss series sleeper screw, square head screw spike, hexagon screw spike and double-head screw spike.
Ss series sleeper screws
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Name |
Oxide Black 8.8 Grade DIN Standard Railway Screw Spike High Hardness |
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Type |
Ss5.-150 |
V20-135 |
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Ss8-140 |
V23-115 |
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Ss8-150 |
V23-135 |
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Ss8-160 |
V23-155 |
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Ss23-160 |
V23-215 |
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Ss25.-165 |
V26-115 |
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Ss35.-161 |
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Or the type by customers’ drawings |
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Grade |
4.6 |
5.6 |
8.8 |
10.9 |
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Material |
Q235 |
35# |
45# |
40Cr |
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Mechanical properties |
Tensile strength: |
Tensile strength: |
Tensile strength: |
Tensile strength: |
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Yield strength:≥240Mpa |
Yield strength:≥300Mpa |
Yield strength: |
Yield strength: |
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Elongation:≥22% |
Elongation:≥20% |
Elongation:≥12% |
Elongation:≥9% |
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Cold bending: |
Cold bending: |
Cold bending: |
Cold bending: |
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Surface |
plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing |
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Standard refers |
ISO898-1, UIC864-1, and NF F500-50 |
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Production Process
Raw material —— Wiredrawing —— Cutting the wire rod to length —— forming the head —— cutting Edge —— Thread rolling —— Heat Treatment —— Surface treatment —— Final inspection —— Packaging —— Shipment
Railway fastening Track bolt fish bolt screw spike Surface Treatment
plain (oiled)
color paint
oxide Black (most choice)
galavazing
DHG
Dacromet
Inspection machine:
Brinell Hardness Tester
Rockwell Hardness Machine
Carbon and Sulfur Analyzer
Automatic Impact Testing Machine
Automatic High-speed Analyzer
Metallographic Microscope
Fatigue Testing Machine
Metallographic Specimen Polishing Machine
Metallographic Specimen Pointing Machine
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