Type : according to customers drawings/samples .
Raw material : Q235 .
Surface : plain (oil), black, zinc, hdg,etc.
SUYU specialize in producing rail fastening , screw spikes are our main products , these screws spikes
are used to fasten sole plates & ribbed base plates to wooden sleepers. In the rail constructions with the
concrete sleepers these screws are used in combination with a plastic dowel pressed in concrete sleeper .
Below is some of our main products .
1. Ss series , according to UIC864-1 , grade from 4.6 .5.6 .8.8
Surface : plain (oiled ) .Zinc .Hdg
Material : Q235 .35#. 45#
Type | Dimension (mm) | Weight (Kg) |
Ss5.-150 | M24×150 | 0.545 |
Ss8-140 | M24×140 | 0.528 |
Ss8-150 | M24×150 | 0.548 |
Ss8-160 | M24×160 | 0.568 |
Ss23-160 | M24×160 | 0.645 |
Ss25.-165 | M24×165 | 0.625 |
Ss35.-161 | M24×160 | 0.657 |
2. Screw spikes with the standard ASTMA66-87 , cold bending 90 degree without cracks .
Tensile strength | Yield strength | Elongation 2" |
414Mpa | 207Mpa | >18% |
Diameter | 3/4" 7/8" 15/16" |
Length | 5-1/2" 6" 7" 8" 10" |
3. Screw spike mostly used in South American and Africa with big disk
Diameter | 22mm 23mm |
Length | 115mmm 133mmm 178mm |
Grade | 4.6 5.6 |
Material | Q235 35# |
4. 3V sleeper screw meet with NF F50-006 , grade 4.6 &5.6 , the mechanical properties are in accordance with UIC864-1 standard .
Type | Dimension(mm) | Weight (Kg) |
V20-135 | M20×135 | 0.438 |
V23-115 | M23×115 | 0.48 |
V23-135 | M23×135 | 0.55 |
V23-155 | M23×155 | 0.62 |
V23-215 | M23×215 | 0.78 |
V26-115 | M26×115 | 0.55 |
5. High tensile screw spike 15/16×6-1/2
Tensile strength | Yield strength | Elongation | Reduction of area | Hardness |
120,000psi(min) | 92,000psi(min) | 14%(min) | 35%(min) | HRC22-HRC32 |
Full size carbon steel screw spikes shall stand being bent cold 45degree around a pin 3 times the spike's
diameter without crack on the outside of the bent portion .
Material 45# , heat treatment .
This type screw spike is widely used in North American .
6. Coach screw used for mining industry
Size | weight (Kg) | Surface | Grade |
18×65 | 0.15 | Zinc | 4.6 |
18×75 | 0.165 | Zinc | 4.6 |
7. DHS35 screw spike , Supporting the use of the SKL14 system .
Size | Weight(Kg) | Surface | Grade |
24×158 | 0.65Kg | Plain/YZ | 5.6 |
24×161
| 0.66Kg
| Plain/YZ
| 5.6
|
8. Screw spike 22×115 , assembly with SKL1 system with the grade 5.6 , according to the standard NF-F 50014 .
9 Special screw spike 23×174 , fix the rail together with the Nabla clip system, very popular in Africa ,We use the
special material TD16 to produce the screw to meet with the bending test , bending 30 degree and
straightening it , without crack .
10 .Dive spikes are available for a wide installations & maintenance of way , meet with the standard
ASTMA66-87 , cold bending 90 degree without crack
Size 5/8×10 & 7/8×7 , Surface ZINC
Tensile strength | Yield strength | Elongation 2" |
414Mpa
| 207Mpa
| >18%
|
