U71mn 38kg GB Heavy Rail

Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of u71mn 38kg gb heavy rail in China, also supports customized service with low price. Please feel free to buy cheap u71mn 38kg gb heavy rail made in China here from our factory.

GB heavy rails are mainly made of steel materials such as U71MN and U75V, with trace elements such as niobium, vanadium and titanium added to improve toughness and fatigue resistance by refining grains. Its production requires processes such as steelmaking, continuous casting, rolling and heat treatment. The steelmaking process uses converters or electric arc furnaces, and the content of impurities such as sulfur and phosphorus is reduced through refining technology outside the furnace. The finished product must pass ultrasonic flaw detection, tensile testing and other tests to ensure that there are no internal defects and the tensile strength is ≥880MPa.

U71Mn 38 kg heavy rail is an economical and practical light heavy rail suitable for low speed and medium load scenarios. It is mainly used for light railways or branch lines such as freight lines, factory railways, etc. in mines, forest areas, and factories, and can withstand medium loads. It can also be used as crane rails, bridge crane rails, or non-standard engineering structural parts (need to be verified according to actual load).

Performance characteristics

Strength and wear resistance: medium-high carbon steel material + manganese alloying, tensile strength ≥880MPa, high hardness (about 280-320HB), suitable for medium-frequency train or vehicle traffic.

Toughness: Manganese improves toughness, reduces the risk of brittle fracture, and adapts to slight vibration or impact conditions.

Weldability: It can be welded by flash welding, gas pressure welding, etc., but the cooling speed needs to be controlled to avoid cracks.

GB heavy rail foreign trade packaging adopts the "basic reinforcement + key protection" mode. First, stack the rails into a regular rectangular block, and use 3.2 mm diameter steel wire to wrap 3-4 circles at both ends and the middle of the rails to form a preliminary fixed frame, and then use 18 mm wide galvanized steel strips for cross-binding, and use double lock buckles to reinforce the joints of the steel strips.

In the anti-rust process, first use a brush to evenly apply anti-rust oil on the surface of the rail, focusing on welding points, edges and corners and other easily corroded parts. After the oil film dries, wrap it with a plastic film in a spiral, and overlap each circle by 1/3 of the width to ensure no gaps.

As a global strategic partner of GB standard heavy rail products, GNEE RAIL focuses on providing comprehensive material solutions for international railway infrastructure projects. We have built a complete industrial chain system from raw material procurement, production and manufacturing to international trade, with independent import and export rights and a complete international marketing network. We have established an industry-leading quality control laboratory equipped with advanced equipment such as X-ray flaw detectors and ultrasonic detectors to ensure that all product performance indicators meet or exceed international standards.

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