Mine U-Shaped Steel

Details

Mine U-shaped steel is a type of steel specially used for mine support, named for its cross section shape similar to the letter "U". It plays a supporting and reinforcing role in underground engineering such as mine roadway and tunnel engineering, which can effectively prevent landslide and geological deformation and ensure mine safety production.

1. Material
Mine U-shaped steel usually uses high-strength, high-toughness steel, common materials include:
(1) low-alloy high-strength steel: such as Q345, Q390, etc., with high strength and toughness.
(2) high-quality carbon structural steel: such as 20MnK, 25MnK, etc., after special treatment, excellent comprehensive performance.
(3) Corrosion resistant steel: In humid or corrosive environments, corrosion resistant steel may be used or surface treatment (such as galvanized).

2. Specifications and dimensions
The specifications of Mine U-shaped steel  are large to meet the needs of mine support. Common specifications include:
Height (H) : 100mm to 400mm.
Leg width (B) : 50mm to 150mm.
Waist thickness (T) : 5mm to 20mm.
Common models are:
18U, 25U, 29U, 36U, etc., the number represents the approximate weight of U-shaped steel (kg/m).

3. Production process
The production process of Mine U-shaped steel mainly includes:
(1) Hot rolling molding: through high temperature rolling, the production of high strength, high toughness of U-shaped steel.
(2) Cold forming: Some light mining U-shaped steel uses cold forming process, but it needs to ensure its strength and toughness.
(3) Heat treatment: Some mining U-shaped steel will be tempered to improve its overall performance.

Fourth, surface treatment
In order to improve the corrosion resistance and service life of mining U-shaped steel, the following surface treatments are usually carried out:
(1) Galvanizing: a layer of zinc is plated on the surface to improve corrosion resistance.
(2) Spray painting: coated with anti-rust paint to prevent steel rust.

5. Main uses
Mine U-shaped steel is mainly used in the following scenarios:
(1) Mine roadway support: as a supporting structure of roadway roof and side wall to prevent collapse.
(2) Tunnel engineering: used for tunnel support to ensure construction safety.
(3) Underground engineering: such as subway, underground warehouse and other engineering support.

Mine U-Shaped steel
Size	Specifications (mm)				Weight  (kg/m)	Steel Grade	Length (m)
	H1	H3	B1	M
25U	120.0	15	135	6.3	24.95	20MnK	6-12
25UY	110	17	134	6.6	24.76
29U	124	16	150	7.2	29.00
36U	138	17	171	7.8	35.87
40U	141.9	20	171	8.5	40.05

Packaging and Transportation

Our company is one of the large steel manufacturers in Shandong with strong supply capacity. Since opening up the international market, our products have been exported to Europe, Russia, the United States, the Middle East and other countries and regions, and are deeply trusted by customers. We use high-standard packaging and efficient transportation, while maintaining timely communication with customers to ensure product safety and on-time delivery.

Customer feedback

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Application

Steel is widely used in construction, manufacturing, transportation and other fields. In architecture, it is used to build steel structure frames, Bridges and high-rise buildings; In the manufacturing industry, it is used to produce machinery and equipment, automobiles, ships, etc.; In the field of transportation, it is used for railway tracks, vehicle bodies and containers. In addition, steel is used in the energy industry, such as wind power towers and oil pipelines. Its high strength, durability and plasticity make it an important material for modern industry.