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1 About Tedrail
Tedrail is a professional manufacturer of railway products based in Jiangsu, China. We specialize in supplying a wide range of components including bogie parts, wagon parts, coach parts, and locomotive parts, all tailored to customer specifications. With expertise in design, manufacturing, and inspection, Tedrail ensures high-quality products and comprehensive solutions for the railway industry.
2 Axle Steel Grades and Standards Supported by Tedrail
Tedrail supports and complies with a wide variety of axle standards and steel grades, ensuring compatibility with global railway systems.
Standards & Material Heat Treatment Approaches
TB/T 2945-1999 – LZ50 – N (Twice) followed by T
AAR M-101-2011 – AAR Grade F – N (Twice) followed by T
– AAR Grade G – Q followed by T
– AAR Grade H – N, Q followed by T
EN 13261-2009 – EA1N – N
– EA1T – Q followed by T
– EA4T – Q followed by T
UIC 811-1-1987 – A1 – (U), N, T
– A2 – N
– A3 – N, T
– A4 – T
– A5 – T
Less Common Standards:
JIS E 4502, GMRT 2466, IRS 16/95, CME-1
Customized technical specifications can also be met upon request.
REF: N-Normalizing, T-Tempering, Q-Quenching, U-Untreated
Chemical Analysis of Commonly Used Steel in Different Standards
LZ50 Elements: C, Mn, Si, P, S, Cr, Ni, Cu, T.Al
Percentage (%): 0.47–0.57, 0.60–0.90, 0.17–0.40, ≤0.03, ≤0.03, ≤0.30, ≤0.30, ≤0.25, ≥0.02
Tolerance: ±0.02, ±0.03, ±0.02, +0.005, +0.005
AAR Grade F Elements: C, Mn, Si, P, S, V
Percentage (%): 0.45–0.59, 0.75–1.00, ≥0.15, ≤0.045, ≤0.05, 0.02–0.08
Tolerance: ±0.03, -0.02, +0.008, +0.008, ±0.001
EA1N Elements: C, Mn, Si, P, S, Cr, Ni, Cu, V, Mo
Percentage (%): ≤0.40, ≤1.20, ≤0.50, ≤0.02, ≤0.02, ≤0.30, ≤0.30, ≤0.30, ≤0.06, ≤0.08
Tolerance: +0.005, +0.005
3 Manufacturing Process
The main process of axle manufacturing includes ingot or bloom reduction, heat treatment, tensile and ultrasonic testing, machining, and coating. From the initial bloom check to final testing, Tedrail maintains strict quality control to ensure the highest standard of axle performance.
4 How Do We Guarantee Quality?
Experienced Design Engineering
Our experienced engineers quickly understand your drawings and identify key points to ensure precision and efficiency.
Mature Workshop Directing
Our mature workshop management ensures precise control throughout the production process, meeting all customer requirements effectively.
Comprehensive Testing and Inspection
Tedrail conducts thorough tests at every stage of production to ensure consistent quality. Any test that does not meet the required standards will result in the rejection of the axle.
Test Categories
- Chemical Analysis
- Tensile and Impact Test with Mechanical Analysis
- Micrographic/Microscopic Test
- Macrographic/Macroscopic Test
- Ultrasonic Test
- Magnetic Test
- Appearance and Dimensional Inspection
Serious Quality Assurance
After production, our quality assurance team thoroughly inspects each axle to ensure it meets all client requirements before delivery.
Jiangsu Tedrail Industrial Co., Ltd. is a high-tech enterprise integrating the design and manufacturing of railway passenger cars, metro vehicles, railway vehicles, and rail fittings. The company is committed to providing customers with comprehensive railway transport systems, including passenger and freight solutions. With an experienced design team, we are always ready to offer fast and high-quality services. Our products have been exported to countries such as the United States, South Africa, Brazil, and others, covering vehicle components, bogies, couplers, gangways, seats, luggage racks, air conditioning systems, driver operation desks, electrical cabinets, electric connectors, PIS systems, and FRP composite materials.
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