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What are the different standards for Rail Clips?
Rail clip, also called elastic rail clip, it is used to fasten the rail tracks with railroad spike, rail pad, track bolt, rail joint bar together. It is also usually used as a part of rail fastening system. There are huge demand of rail clips on the railway line, about 7000pcs per kilometer, which is directly related to rail safety.
Rail clip standards vary by country and region, with common standards including the Pandrol series (E-clips, PR clips), popular in America and Canada, and the SKL series, used in the German HM fastening system. Other examples include Russian spring clips, Deenik (DE) clips for concrete sleepers, and various fast clip types used in different parts of Asia. Standards are based on factors like track conditions, and materials are typically high-strength spring steels, such as 60Si2MnA or 55Si2Mn.
| Material | 60Si2MnA | 60Si2CrA | 55Si2Mn | 38Si7 |
| Chemical composition(%) | C:0.56-0.64, Mn:0.60-0.90, Si:1.60-2.00, Cr:≤0.35, P:≤0.03, S:≤0.03 | C:0.56-0.64, Mn:0.40-0.70, Si:1.40-1.80,Cr:0.70-1.00 P:≤0.03, S:≤0.03 | C:0.52-0.60, Mn:0.60-0.90, Si:1.50-2.00,Cr:≤0.35 P:≤0.03, S:≤0.03 | C:0.35-0.42, Mn:0.50-0.80, Si:1.50-1.80, P:≤0.03, S:≤0.03 |
Common standards by region and brand
- Pandrol Series: Includes E-clips and PR clips, which are common in North and South America, Canada, and other countries.
E-clips: Designed for durability and rail alignment, with sizes such as E1609, E1809, E2001, and E2055.
| Model | Diameter | Material | Under Pressure | HRC | Weight |
| E1609 | Ø 16mm | 60Si2MnA | ≥950kg | 44-48 | 0.43kg/pc |
| E1809 | Ø 20mm | 60Si2MnA | ≥950kg | 44-48 | 0.61kg/pc |
| E1813 | Ø 18mm | 60Si2MnA | ≥950kg | 44-48 | 0.62kg/pc |
| E2001 | Ø 20mm | 60Si2MnA | ≥950kg | 44-48 | 0.80kg/pc |
| E2009 | Ø 20mm | 60Si2MnA | ≥950kg | 44-48 | 0.80kg/pc |
| E2039 | Ø 20mm | 60Si2MnA | ≥950kg | 44-48 | 0.80kg/pc |
| E2007 | Ø 20mm | 60Si2MnA | ≥950kg | 44-48 | 0.80kg/pc |
| E2055 | Ø 20mm | 60Si2MnA | ≥950kg | 44-48 | 0.80kg/pc |
| E2056 | Ø 20mm | 60Si2MnA | ≥950kg | 44-48 | 0.80kg/pc |
| E2063 | Ø 20mm | 60Si2MnA | ≥950kg | 44-48 | 0.80kg/pc |
PR clips: Another type in the Pandrol series, with examples like PR601.
- SKL Series: Developed in Germany, this is the standard for the HM fastening system.
Examples include SKL1, SKL2, SKL3, SKL12, and SKL14.
| SKL Rail clip specification | |
| Name | SKL tension clamp |
| Material | 60Si2MnA 60Si2CrA 55Si2Mn 38Si7 |
| Hardness | 42-47HRC |
| Fatigue Life | for Dia.18 is 3 millions cycles without breaking |
| for Dia.20 is 5 millions cycles without breaking | |
| Surface | plain (oiled), Oxide black, color painting or according to customer requirement |
| Standard | DIN17221, BS970, GB/T1222 |
- Russian Spring Clips: Includes variants like the "fast clip" and 16Φ clips used in some Southeast Asian countries.
- Deenik (DE) Clips: Widely used in South America on concrete sleepers, often in conjunction with cast iron shoulders and baseplates.
| Deenik Rail clip specification | |
| Name | Deenik rail clip |
| Material | 60Si2CrA 55Si2Mn 38Si7 |
| Hardness | 42-47HRC |
| Fatigue Life | for Dia.18 is 3 millions cycles without breaking |
| for Dia.20 is 5 millions cycles without breaking | |
| Surface | plain (oiled), Oxide black, color painting or according to customer requirement |
- Other standards: Other fastening systems with their own clips include the Dutch DE type, FIST, Nabla, and the 102 type fastening system.
As an OEM & OBM manufacturer, GNEE RAIL is capable of not only producing a wide range of internationally common types of rail clips, such as W Tension Clamp, e-Clip, Fast-Clip, SKL Tension Clamp, Nabla Blade, etc., but also customizing products tailored to our customers' specific requirements.
