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Railway Steel Tie Plate for Rail and Sleeper Fastening

Railway Steel Tie Plate for Rail and Sleeper Fastening

Product No.：202672815514
Price：nogotiation
Material：high-quality carbon steel
Standard：AAR or GB
mould charge：yes
Production time：60
weight：30
Package：Wooden Box
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1. Product Overview

The railway casting steel rail tie plate (also known as base plate or sole plate) is a critical load‑bearing component in railway fastening systems. Installed between the rail foot and the sleeper (timber or concrete), it performs the following essential functions:

Load Bearing and Transmission – It receives the train loads from the rail and distributes them evenly over the sleeper and ballast bed, preventing localised stress concentrations that could damage the sleeper.
Gauge Retention – The integral shoulders on the tie plate restrain lateral displacement of the rail, ensuring that the track gauge (e.g., standard gauge 1435 mm) remains within design limits.
Providing Rail Cant – The bearing surface is machined with a specific slope (typically 1:40) to induce an inward cant (rail inclination), optimising wheel‑rail contact geometry.
Extending Sleeper Life – By increasing the contact area between the rail base and the sleeper, it significantly reduces wear on the sleeper surface.

Manufactured by cast steel processes, this product offers superior strength, toughness and impact resistance compared to cast iron plates, making it particularly suitable for heavy‑haul railways, high‑speed lines and high‑axle‑load freight routes.

2. Product Classification

Based on shoulder configuration, cast steel tie plates are mainly classified as follows:

Type	Characteristics	Application
Single‑Shoulder Plate	Shoulder only on the field side; no shoulder on the gauge side	Light‑duty lines, rail weights 56 lb ~ 100 lb
Double‑Shoulder Plate	Shoulders on both sides of the rail – stronger rail restraint	Heavy‑haul & high‑speed lines, rail weights >100 lb
No‑Shoulder Plate	Without shoulders	Specific fastening systems

The double‑shoulder type is currently the most widely used worldwide. According to the number of bolt holes, they are also available in 2‑hole, 4‑hole, 5‑hole, 6‑hole and 8‑hole configurations.

3. Technical Parameters

3.1 Common Specifications

Below are typical dimensions for cast steel tie plates (custom sizes available on request):

Model	Dimensions (mm)	Hole Dia. (mm)	No. of Holes	Rail Cant	Rail Type	Weight (kg)
Rph 1/160	345/285/127/160×15/13	Ø 26	4	1:40	S49/S54	7.86
Rp 01/01/160	345/285/127/160×15/13	Ø 26	4	1:40	S49/S54	7.70
Rph 1/210	345/285/127×210×15/13	Ø 26	4	1:40	S49/S54	10.55
Rph 1/210	345/285/127×210×15/13	Ø 36.3	2	1:40	S49/S54	10.55
Rph 1/210 FVZ	345/285/127×210×15/13	Ø 26	4	1:40	S49/S54	10.69
Sph 1(a)	345/350/127×410×15/13	Ø 26	8	1:40	UIC60	20.60
Rph 6/160	370/310/152×160×15/13	Ø 26	4	1:40	UIC60	8.44
Rph 6/210	370/310/152×210×15/13	Ø 26	4	1:40	UIC60	11.32
SZ 60	370/350/152×420×15/13	Ø 26	8	1:40	UIC60	22.73
Rph 11 Ü	664/554×160	Ø 26	4	1:40	S54	15.37
Rph 13 Ü	690/570×160	Ø 26	4	1:40	UIC60	15.27
Rpo 5	345/285/127×160×15/13	Ø 26	4	1:20	S49/S54	8.00

Note: Dimension notation (e.g., 345/285/127/160×15/13) indicates length/width/thickness/other dimension × plate thickness/shoulder height – please refer to customer drawings for exact interpretation. All specifications can be custom‑made according to client drawings or samples.

3.2 Dimensional Tolerances

In accordance with general industry practice:

Parameter	Tolerance (mm)
Thickness	±1.0
Width	±3.0
Length	±4.0
Edge distance of holes	±0.5
Hole spacing	±1.0

4. Material & Chemical Composition

4.1 Common Material Grades

The following grades are available depending on service conditions:

Cast steel: ZG230‑450, ZG270‑500, ZG25, ZG35, ZG45
Ductile iron: QT450‑10, QT500‑7, QT600‑3
Carbon steel: Q235, 20#, 35#, 45#
Low‑alloy cast steel: ZG25MnCrNiMo, etc.

4.2 Typical Chemical Composition (QT500‑7)

Element	Content (%)
C	3.60 ~ 3.80
Mn	≤ 0.6
Si	2.50 ~ 2.90
P	≤ 0.08
S	≤ 0.025

(For QT450‑10: C 3.40‑3.90, Mn 0.2‑0.5, Si 2.70‑3.00, P≤0.07, S≤0.03)

4.3 Mechanical Properties

Grade	Tensile Strength (MPa)	Hardness (HB)	Elongation (%)
QT450‑10	≥450	170‑230	≥10
QT500‑7	≥500	—	≥7
ZG230‑450	≥450	—	≥5
ZG270‑500	≥500	—	≥5

5. Applicable Standards

Our products are manufactured and inspected in accordance with the following international, national and industrial standards:

Standard Code	Title / Scope
AREMA Chapter 5 Part 1	American Railway Engineering and Maintenance‑of‑Way Association – Rail Tie Plates
ASTM A67	Standard Specification for Steel Tie Plates (Grade 1 Low‑Carbon / Grade 2 High‑Carbon)
UIC 864‑6	International Union of Railways – Tie Plate Standard
GB/T 1348	Ductile Iron Castings (China)
TB/T 3395	Castings for High‑Speed Railway Fastening Systems (China)
DIN EN 1561	Cast Iron with Lamellar Graphite (Germany/Europe)
EN 13481	Railway Applications – Track – Fastening Systems (Europe)

6. Manufacturing Process

6.1 Casting Process

Cast steel tie plates are mainly produced via:

Sand Casting – Economical for high‑volume production.
Lost Foam Casting – High precision and good surface finish, suitable for complex shapes.
Investment Casting – Excellent dimensional accuracy for demanding applications.

Process flow: Tooling design → Moulding/core‑making → Melting (medium‑frequency induction furnace, pouring temperature ~1580°C) → Pouring (vacuum maintained at 0.03 MPa) → Cooling → Shakeout & cleaning → Heat treatment (if required) → Surface finishing.

6.2 Alternative Processes (Optional)

Besides casting, tie plates can also be manufactured by forging or rolling. Forged plates have simpler geometry and lower tooling costs; cast plates allow more complex shapes (especially double‑shoulder designs). The optimal process can be selected based on specific requirements.

7. Surface Treatment

To enhance corrosion resistance and service life, we offer the following surface finish options:

Treatment	Features
Plain (as‑cast)	No additional coating, suitable for general environments
Oil Coating	Rust‑preventive oil for short‑term protection
Sandblasting	Removes scale and improves paint adhesion
Painting / Electrostatic Powder Coating	Long‑term anti‑corrosion for harsh environments
Black Oxide (Oxidising)	Decorative black finish with moderate corrosion protection

8. Product Advantages

8.1 High Strength & Toughness

Cast steel material provides excellent tensile strength and impact toughness, capable of withstanding repeated heavy train loads – ideal for high‑axle‑load heavy‑haul railways.

8.2 Precise Gauge Retention

The integral shoulders closely fit the rail base, effectively limiting lateral movement and ensuring long‑term gauge stability.

8.3 Optimised Load Distribution

By enlarging the contact area between rail and sleeper, the plate uniformly transfers loads, significantly prolonging sleeper service life.

8.4 Flexible Customisation

We can manufacture any specification, material grade, and surface finish according to your drawings, samples, or technical requirements.

8.5 Rigorous Quality Control

We implement full‑chain quality control – incoming material inspection, in‑process monitoring, and final inspection – using Statistical Process Control (SPC) to ensure all finished products meet applicable standards.

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