JIS 37A Rail
JIS 37A rail, weighing 37.2kg per meter, is a heavy-duty track model compliant with JIS E 1101-2001. Made from high-strength steel grades such as 50Mn, 55Q, or U71Mn, the JIS 37A rail performs well in demanding conditions like port crane systems, industrial transport tracks, and regional freight lines.Its key advantage lies in balancing strength and cost, making it suitable for customers who need high load capacity without the expense of ultra-heavy rails.
Rail Specification
| Height: 122.24mm | Base Width: 122.24 mm |
| Head Width: 62.71 mm | Web Thickness:13.49 mm |
| Length: 6m-24m | Material: 50Mn/55Q/U71Mn |
| Weight: 37.2 kg/m | Standard: JIS E 1101-2001 |
If you have special requirements for length or higher strength materials, please contact us for special custom production.
JIS 37A Rail Material Specifications
Produced in accordance with JIS standards, the 37A rail can be manufactured using 50Mn, 55Q, or U71Mn steel, depending on the required mechanical performance. See the table below for detailed chemical and mechanical properties.
Custom Processing Options for JIS 37kg Rail




Customization services for JIS 37A rails are designed to accommodate complex track layouts and demanding project specifications. Our expert team guarantees precise manufacturing that aligns with your unique requirements, facilitating smooth and reliable installations.
Our Services Include:
- Precise length cutting
- Pre-drilled holes for fasteners
- Optional corrosion-resistant coating
- Custom end shaping and finishing
Why Choose the JIS 37A Rail
Applications
Used in heavy-duty transport areas such as mining operations, port logistics rails, and large industrial crane tracks.
Advantages
With optional use of heat-treated steel like 50Mn or U71Mn, the rail offers high surface hardness and fatigue resistance under frequent heavy use.
Why Glory Track
Backed by ISO 9001 certification, in-house processing equipment, and global delivery to heavy industry clients in mining and port projects.
FAQ
How does 37A compare to 40N in terms of load capacity?
→ 37A offers slightly less strength than 40N due to its lighter weight and smaller cross-section, though both use similar steel grades. It’s still reliable for medium-duty use.
What standard rail lengths can you supply?
→ We offer custom-cut lengths and matching fishplates for easy installation and secure rail joints.
Are welding ends or pre-drilled holes available?
→ Yes, we provide welding-ready ends or hole drilling based on your track layout and installation needs.
Let’s help you choose the right JIS 37A rail:
- Rail use (crane, freight, industrial)
- Surface treatment or anti-rust needs
- Section cutting drawings or technical files if available
