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PortuguêsRail Cast Iron Shoulder, Rail Spike, Rail Sleeper Screw, Rail Fish Plate, Tunnel Bolt, Elastic Rail Clip, Rail Clip, Rail Nylon Insulator
The iron shoulder is cast in the concrete ties for fixation of elastic rail clips. Our rail cast iron shoulders include M.C.I. shoulder manufactured from pearlitic malleable iron and S.G.C.I. shoulder manufactured from spheroid graphite iron. We offer two types of iron shoulders. One is Single Stem Iron Shoulder used in pre-stressed concrete ties and the other is Twin Stem Iron Shoulder used in Bi-Block or Twin Block concrete ties.
1. Casting shoulders are pressed in concrete sleeper and assembled with E clip in order to fasten the rail. The material we use is cast iron and the mechanical property and chemical composition of the rail cast iron shoulder are shown below:
| Material | Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) |
| QT400-15(GGG40) | 400 | 250 | 15 |
| QT450-10(GGG45) | 450 | 310 | 10 |
| QT500-7 (GGG50) | 500 | 320 | 7 |
| C | Si | Mn | P | S | |
| QT400-15 | 3.6-.36 | 3.0-3.2 | 0.5 | 0.07 | 0.02 |
| Qt450-10 | 3.4-3.9 | 3.7-3.0 | 0.5 | 0.07 | 0.03 |
| QT500-7 | 3.4-3.8 | 2.5-2.9 | 0.6 | 0.08 | 0.025 |
2. This type of rail shoulder is produced by hot forging, used together with clip bolt and special rail clip to fix the rail. The material can be low carbon steel and mid carbon steel, according to our customers' requirement.
3. Weld-on shoulder is used for the typical position of rail. This rail cast iron shoulder is welded on flat steel plate instead of the standard tie plate and is produced according to AREA standard. Designed for use with E style elastic rail clips, the weld on shoulder fastening allows customers to fabricate rail retaining units on both steel sleepers and steel base plates.
The rail cast iron shoulders can also be welded on to longer length steel sleeper sections or bearers for use in the fabrication of switch and crossing layouts where vertical rail geometry is employed. The railway shoulder's ability to be welded in the specific position as dictated by the layout design makes it particularly useful and cost effective in this role.
The shoulder accessories are supplied for specific rail sections with design criteria which ensure that the correct elastic clip toe loading is achieved. Certain shoulders are supplied with milled weld area faces to assist in achieving the necessary weld integrity.
We can offer weld-on types to suit Pandrol style clips 30lb up to 113lb.
Adhering to our quality first policy, SUYU pays great attention to quality control management. We have been granted ISO9001-2008 certificates and have received the production license of China's Railway Ministry on railway products. We have a full set of inspection instruments to ensure all our rail cast iron shoulder are of high quality and up to customers' requirements.
As a leading manufacturer of rail fastening based in China, SUYU also produces many other railway fasteners, such as track bolt, sleeper screw, rail anchor, rail joint bar, tie plate, rail clips, elastic rail clip, SKL tension clamp, and so on.
