GB/T4697-2008 20mnk 25u Arch Support for Underground Mine Road

• Customization: Available
• Standard: GB
• Technics: Hot Rolled
• Model NO.: 25U 29U 36U mining tunneling steel profile
• Surface: Black
• Alloy: Non-alloy
• Special Use: Mining
• Transport Package: Bare in Bundles by Steel Wire
• Specification: 25U
• Trademark: YONG YANG
• Origin: China
• HS Code: 730890
• Production Capacity: 20000ton/Year

Product Description

25U Mining Arch support steel  

Material:  20Mnk

Weight: 24.76kG/M

Length:  8-12m

Standard: GB/T4697-2008



Detailed Parameters:

Size	Specifications(mm)				Weight (kg/m)	Steel Grade	Length (m)
	H1	H2	B	M
25U	110	17	134	6.6	24.76	20MnK	8-12
29U	124	16	150	7.2	29.00	20MnK	8-12
36U	138	17	171	7.8	35.87	20MnK	8-12

Main application:

U-shaped Arch steel support are mainly used for mine road support and steel structure project.

Withstand high pressure, support long time, easy to install and easy to deformation.
Arch steel support lift straight wall semi-arched shed in the Ready Roadway Intersection of applications, and achieved remarkable results. Optional retractable U-shaped steel bracket, solves the problem of tunneling support. U-shaped steel bracket than other rigid support with a scalable and reliable carrying capacity to adapt to the load and deformation of soft rock, cross utilization is high, easy to stand back support small amount of maintenance, support recovery reuse rate, reducing the pit wood used, environmental benefits are clear.

YONGYANG SPECIAL STEEL GROUP
HANDAN YONGYANG IMP.&EXP. CO.,LTD
Leading Edge Technology
Leading Edge Manufacturing Equipment
Leading Market Globally
Leading Q/A, Q/C System
Leading Digital Online Management
 

1. Large Scale Integrated Steel Mill
2.  Annual Output: 4 Million Tons+
3.  Foundry Area: 500 Hectares, (1235 Acre)

1.  Total 5000+ Employees
2.  Total Assets : 2 Billion USD+

Handan Yongyang Import & Export Co.,ltd is wholly-owned subsidiary of Hebei YongYang Special Steel Group Co., Ltd. (hereinafter referred to as Yongyang Company) is located in Yongnian District Special Steel Industrial Park, Handan City, Hebei Province. Established in 1993. In 2015, according to the adjustment plan of the iron and steel industry structure of Hebei Province, Nine iron and steel enterprises of Yongnian and Wu'an were integrated and reorganized, and industrial restructuring, relocation and equipment upgrading were implemented. The company covers an area of 5km2 and has 5000 employees,total assets 1.3 billion USD.
Yongyang company has the production capacity of 1.16 million tons of iron, 1.2 million tons of fine steel and 3.2 million tons of special steel profiles annually. It is a special steel enterprise mainly producing alloy structural steel, spring steel and high quality carbon structural steel. The existing products are mainly high and medium pressure boiler tubes, oil casing and other billets, spring flat steel for automobile leaf spring, hot rolled flat steel for high strength automobile, light rail, heavy rail, mining steel, crane rail, U-shaped steel, etc. The company has built One 1260 m3 blast furnace, One 120 ton converter, matching lime kiln, water treatment and power generation system
MAIN PRODUCTS

•  RAILWAY / RAIL TRACK / CRANE RAIL
•   H-BEAM / I-BEAM / U-BEAM
•  RAIL FASTERNERS
•  ROUND BAR /FLAT BAR

YONGYANG Advantages
against small producer and trading companies : 

• 1) FAMOUS TRADE MARK-purchase rail tracks from the largest manufacturer in China, our customers can get qualified rail track with QC certificates, YONGYANG is one of the top 20 trade marks in China steel industry,viewed as the synonym of quality to clients.
• 2) AVOID FRAUDULENT-You will never be cheated either quality or price by trading companies ,when you purchase directly from the factory.
• 3) QUALITY GUARANTEED -In the industrial of rail track manufacturing, small factory or trading companies cut rail track and drill holes with manually machines resulting bigger tolerance,while we use fully automatic digital control large scale sawing and cutting machines , along with online ultrasonic inspection of cracks,large scale straighten machines, averting even single unqualified rail go out of the factory.
• 4) QUALITY WARRANTY- within 5 years, any unqualified rails should be substituted  on our cost.
• 5) FREE SAMPLES- anytime we can send you free samples with brand tag YONGYANG on your request.
• 6) STOCKPILE- as the largest manufacturer of rail track, crane rail in China,we have a daily stock of 200,000 all kinds of steel rail product in the factory warehouse.
• For further information of the factory, click links following: 
• Quality assurance
• YONGYANG SPECIAL STEEL GROUP are fully approved to ISO 9001 and ISO 14001 standards for Quality Management and Environmental Management respectively.
• The entire manufacturing and inspection process is fully compliant with all international Steel Quality Management Systems, Codes of Practice and Working Procedures.
• The Quality Management System is independently audited and approved by Lloyds Register of Quality Assurance on an ongoing basis. Although not directly related to crane rails, the mill producing this product also manufactures significant volumes for marine grade products and as such the quality control systems are heavily audited by numerous external inspectorates.