pre-stressed hollow grouting rockbolt - Product

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Place of Origin : Luoyang,China
Product Capacity : 10,000pcs Per Month
Payment Terms : T/T

Product Description

Prestressed hollow grouting anchor bolt consists of steel shell-expansion anchor head, hollow anchor rod, grouting stopper, arch plate and nut. Coupling and grouting block are optional. It is designed for hard rock at fractured zone with growing joints which may cause loosing of fractured rock and reducing of friction between rocks, resulting in loosing of surrounding rocks in larger area. Applying enough pre-stress would keep its stability.

Basic Information

Brand : GY
Material : Seamless Steel

Physical Specification

Other Specification : Specification: Specification GY25 GY28 GY32 External Diameter(mm)25 28 32 Breaking Load(KN) ≥150-180 ≥180-220 ≥220-250 Interior Diameter(mm) ≥15 ≥17 ≥22 Drilling Diameter(mm) 42 42 51 Thread Type ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â left Hand Standard Length(m) 1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/6.0 Length Tolerance ÃƒÆ’Ã¢â‚¬Å¡Ãƒâ€šÃ‚Â±2.5％ Remarks: All Kinds Of Anchor Bolt Can Be Customized According To Special Requirements

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