Variable Thread Sleeper Screw
3V Type Railway Sleeper Screw
Size:20x135mm,140mm, 23xL L=115mm to 255mm
Grade: 4.6, 5.6
Standard: NF F500-06
Tension strength 700Mpa(min), elongation 12%(min), and cold bending 30 degree without crack.
Surface: Plain oiled, Blasted oiled, Oxide black, Zinc plated,HDG, Dacromet, Sherardizing
Product Introduction
A screw spike, rail screw (or lag bolt) is a large (~6 in or 152 mm length, slightly under 1 in or 25 mm) metal screw used to fix a tie plate or fasten rail. Screw spikes are fixed into a hole bored in the sleeper. The railway screw spike has a higher cost to manufacture than the rail spike but has the advantage of greater fixing power; approximately twice that of a rail spike, and can be used in combination with spring washers.
| Product | Tensile Strength | Yield Strength | Elongation | Reduction of Area | Hardness |
| High Tensile Screw | 120,000psi(min) | 92,000psi(min) | 14%(min) | 35%(min) | HRC22-HRC32 |
Product Specifications
Variable Thread Sleeper Screw Technical Parameters:
|
Type |
Dimensions norinnales(mm) |
|||||||||
|
d |
I |
a |
a1 |
b |
C |
e |
f |
9 |
Z |
|
|
Tirefond V20-135 |
20 |
135 |
19 |
17 |
30 |
29 |
15 |
12 |
50 |
1.08 |
|
Tirefond V23-115 |
23 |
115 |
23 |
21 |
10 |
31 |
16 |
12,5 |
52 |
0.92 |
|
Tirefond V23-135 |
23 |
135 |
23 |
21 |
30 |
31 |
16 |
12,5 |
52 |
1.08 |
|
Tirefond V23-155 |
23 |
155 |
23 |
21 |
50 |
31 |
16 |
12,5 |
52 |
1.24 |
|
Tirefond V23-215 |
23 |
215 |
23 |
21 |
110 |
31 |
16 |
12,5 |
52 |
1.72 |
|
Tirefond V23-255 |
23 |
255 |
23 |
21 |
115 |
31 |
16 |
12,5 |
52 |
2.04 |
|
Tirefond V26-115 |
26 |
115 |
23 |
21 |
10 |
31 |
19 |
15,5 |
52 |
0.92 |
Three different production process of spike
The most common rail spike is made of Q235 steel(China Steel Standard).The production process of the road spike is generally divided into machinery manufacturing, hand-made manufacturing and machinery & hand-made manufacturing combined.
Different production processes of the railroad spike need different technologies. For example, productions of screw spikes need the use of special steel and a variety of technologies for manufacturing. Manufacturers need to consider the production processes and productions of various different materials to offer the price to clients. Because of production technologies and productions, hand-made spike in all the spikes made of different materials becomes the lowest in production cost and it can also sell in bulk, but high quality railroad spike manufactured by machinery and complexity of production processes is in high cost itself and sell in quantity.
Product Packaging & Delivery
Common Spike
Common spike, also called hook spike or dog spike, mainly used to connect the steel rail or rail plate with the rail sleeper. The cross section of each side is 16mm, and length is 165mm. The surface of the rod should be smooth and bright, flying edge shall not be more than 2mm. There shall be no crack in the joint of the head and the rod. The cutting edge shall not have burr and folding.
| Specification | Material | Surface | Standard |
| 5/8*6 '' | A3,Q235, 45#,55#, etc | According to customer needs. | According to customer's drawings or samples. |
| 9/16*5-1/2 '' | |||
| 3/8''*3-1/2 '' | |||
| 1/2*3-1/2 | |||
| Other kinds |
Against Freezing Damage Spike
Against freezing damage spike is same to common spike in material and manufacturing process. The reason of calling against freezing damage spike is that it is longer than the common one, and the longer length is used for the treatment of frost. With different thickness of the plate and damage degree, against freezing damage spike has various choice of 185, 205, 230, 255, 280mm.
Spring Spike
Spring spike is made of round or square spring steel, which has lots of patterns. The clamping part has certain elastic deformation, which greatly reduces the rail vibration, so it is called spring spike. When the sleeper deforms under stress, it can still maintain enough clamping force on fastener, and the pulling resistance and thrust resistance are higher than the common one.
As a professional manufacturer holding the China Railway Ministry production license, GNEE RAIL has been deeply engaged in the railway fastener sector, equipped with automated production lines and precision testing laboratories. We offer a comprehensive range of railway fasteners capable of meeting the load requirements of high-speed rail, urban transit, and freight rail systems. We support customized production: upon receiving customer drawings or samples, we can quickly complete process design and production scheduling, implementing full-process quality traceability. With our commitment to "high-quality products at competitive prices" and efficient fulfillment, GNEE RAIL has earned the trust and long-term cooperation of railway clients worldwide.
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