9# Mine I Beam

The 9# Mine I Beam is a hot-rolled structural steel section designed specifically for underground mine tunnel and roadway support, manufactured to the YB/T 5047 standard. This profile features a nominal height of 88mm with leg width ranging 74-78mm and web thickness of 7.4-8.6mm, fabricated from 16Mn steel (Q345/S355 equivalent) to deliver reliable performance under high-stress ground pressure. The grade offers yield strength of approximately 345 MPa, making it suitable for the demanding load conditions encountered in coal and mineral extraction operations.

16Mn is a low-alloy high-strength structural steel that provides good weldability and toughness at sub-zero temperatures, a critical property for deep mine environments. The hot-rolling process ensures uniform mechanical properties through the section, with the flanges engineered to resist buckling under axial compression from surrounding rock strata. Standard lengths are produced in mill-conditioned bundles, with ends typically cut square to facilitate end-plate welding or bolted connections in timber-free support systems. The YB/T 5047 specification governs dimensional tolerances, chemical composition limits, and mechanical testing protocols for this mine-specific profile.

Mining contractors and tunneling specialists source 9# Mine I Beam for permanent and temporary support in drift, shaft, and incline developments. The section integrates with U-shaped steel arches and mesh lagging to form active support systems that accommodate ground movement. Importers should confirm bundle weights, lifting lug provisions, and surface condition (mill scale versus shot-blasted) with Henan Zongxiang Heavy Industry prior to shipment. Standard trade terms for structural steel from Henan Province typically involve FOB Tianjin or Qingdao, with letter of credit or 30% advance payment structures common in this segment.

Henan Zongxiang Heavy Industry Import And Export Co, .ltd. is headquartered on Hanghai Road in Guanzhenghuizu District, Zhengzhou, Henan Province, China. The supplier holds a harbor trust tier, which reflects a baseline verification status on the platform rather than any third-party audit or quality certification. The response rate stands at 0.00% with an average response time of zero hours, indicating that direct enquiry responsiveness through the platform channel has not been established or recorded. Buyers should initiate contact through multiple channels and confirm active account management before relying on platform messaging alone.

The company operates as a heavy industry import and export entity in a province that hosts China's largest concentration of coal mining equipment manufacturers and steel producers. The listing provides no information on production capacity, in-house rolling mill ownership, or third-party inspection arrangements. Any claims regarding ISO certification, specific mine safety approvals, or client references must be requested directly from the supplier and verified through documentation rather than assumed from the profile. The Zhengzhou location proximity to major steel producers in Anyang and Jiyuan may offer logistical advantages for consolidated shipments.