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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 bogie parts, wagon parts, coach parts, and locomotive components according to customer specifications. With expertise in design, manufacturing, and inspection, we provide reliable products and comprehensive solutions for the railway industry.
2 Axle Steel Grades and Standards Supported
Tedrail supports and complies with a wide variety of axle standards and steel grades. Here are some of the commonly used ones:
Standards | Material | Heat Treatment | Process
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 be met as well.
Note:
N - Normalizing, T - Tempering, Q - Quenching, U - Untreated
Chemical Analysis of Common Steel Grades
LZ50: C 0.47–0.57%, Mn 0.60–0.90%, Si 0.17–0.40%, P ≤0.03%, S ≤0.03%, Cr ≤0.30%, Ni ≤0.30%, Cu ≤0.25%, T.Al ≥0.02%
AAR Grade F: C 0.45–0.59%, Mn 0.75–1.00%, Si ≥0.15%, P ≤0.045%, S ≤0.05%, V 0.02–0.08%
EA1N: C ≤0.40%, Mn ≤1.20%, Si ≤0.50%, P ≤0.02%, S ≤0.02%, Cr ≤0.30%, Ni ≤0.30%, Cu ≤0.30%, V ≤0.06%, Mo ≤0.08%
3 Manufacturing Process
The main process 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 control over the entire production cycle to ensure high-quality axles.
4 Quality Assurance
Our experienced engineers quickly understand your drawings and identify key points. Our mature workshop management ensures precise quality control throughout the manufacturing process. Comprehensive tests and inspections are carried out at every stage to guarantee product quality.
Test Categories Include:
- Chemical Analysis
- Tensile and Impact Test with Mechanical Analysis
- Micrographic/Microscopic Test
- Macrographic/Macroscopic Test
- Ultrasonic Test
- Magnetic Test
- Appearance and Dimension Inspection
After production, our quality assurance team conducts a double-check on each axle to ensure it meets all client requirements.
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 railway passenger transport systems and freight solutions. With an experienced design team, we offer fast and high-quality services at any time. Our products have been exported to countries such as the United States, South Africa, Brazil, and others, covering vehicles, bogies, accessories, couplers, gangways, seats, luggage racks, air conditioning, driver operation desks, electrical cabinets, electric connectors, PIS systems, and FRP composite materials.
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