Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of u71mn u75v 38kg heavy rail in China, also supports customized service with low price. Please feel free to buy cheap u71mn u75v 38kg heavy rail made in China here from our factory.
Product Introduction
GB heavy rail is a railway heavy rail material that complies with national standards. It is mainly made of low-alloy steels such as U71Mn and U75V. U71Mn steel strengthens the matrix with manganese elements to make its tensile strength reach 880-950MPa. It has good cost performance and is widely used in ordinary railway trunk lines; U75V steel not only improves strength due to the microalloying effect of vanadium elements, but also improves the welding performance and anti-peeling performance of steel. It is suitable for high-speed railways or heavy-duty railways with higher requirements for track quality.
During production, the steel billet needs to be formed by multiple hot rolling, and the rail head adopts an online quenching process to form a hardened layer to enhance wear resistance; the rail waist and rail bottom are designed with optimized structures to ensure uniform stress distribution.
The 38KG heavy rails made of U71Mn and U75V are both rail types that meet national standards. The theoretical weight per meter is about 38 kilograms, which is a light heavy rail.
U71Mn heavy rail performance advantages:
Tensile strength ≥ 880MPa, hardness 280-320HB, balanced comprehensive mechanical properties, suitable for medium load and slight impact scenarios.
Good weldability, can be connected by flash welding and gas pressure welding, and convenient construction.
| Material grade | Tensile strength | Main application | ||||
| U71Mn | ≥880MPa | Conventional railway, subway, secondary lines | ||||
| U75V | ≥980MPa | High-speed railway (such as Beijing-Shanghai, Beijing-Harbin) | ||||
U75V heavy rail performance advantages:
Tensile strength ≥ 980MPa (higher than U71Mn), hardness 300-350HB, better wear resistance, suitable for high wear environment.
Vanadium element enhances the ability to resist crack propagation, significantly improves fatigue resistance, and has a longer service life.
Product Specifications
Product Application
U71Mn P38 heavy rail is preferred: scenarios with limited budget, medium load, frequent welding or high toughness requirements (such as temporary freight lines and tracks in wet forest areas).
U75V P38 heavy rail is preferred: scenarios with severe wear, high traffic frequency and sensitive maintenance costs (such as high-frequency transportation lines in mining areas and high-curvature curved tracks).
GNEE RAIL is a professional trading partner for GB standard heavy rail products. We have complete import and export qualifications and rich international trade experience, and our products are exported to many countries and regions around the world. We have established a strict quality control system to implement full-process quality monitoring from raw material procurement to finished product delivery.
We are equipped with a professional business team, familiar with the trade policies and product standards of various countries, and can provide customers with flexible trade solutions.
Hot Tags: u71mn u75v 38kg heavy rail, China u71mn u75v 38kg heavy rail manufacturers, suppliers, factory, High Manganese Steel, Hot rolled Heavy Rail, Australian 1085 Standard Steel Rail, Mining Special rail, Ultrasonic Testing, QU100 GB Rai
