Hot Sale Hollow Grouting Anchor Bolt for Underground Tunnel Arch Support¹

Product Description Hot sale hollow grouting anchor bolt for underground tunnel arch supportProduct DescriptionSelf-Drilling Anchor is a unique anchoring system and is today'sAnswer to the increasing demands of the tunnelling industry and ground engineering for safer and faster production.The system provides advantages for all areas of its applications, where boreholes would require theTime consuming drilling with casing systems in unconsolidated or cohesive soil.Features and Advantages1\ Fits SupAnchor standard Boomer, ROC and Mustang rigs.2\ Particulary suitable for difficult ground conditions.3\ A high rate of installation since drilling, placing and grouting can be performed in one single Operation.4\ Self drilling system eliminates the requirement for a cased borehole.5\ Installation with simultaneous drilling and grouting possible.6\ Easy installation in all directions, also upwards.7\ Suitable for working in limited space, height and in areas of difficult access.8\ Simple post grouting system.9\ Hot-dipped galvanizing for corrosion protection Applications1,Tunneling Ground engineering          2,Slope stabilization                       3,Foundation with micropile4. 20yrs production experience5. fast delivery64. good after-saleWelcome to visit our plants at any time! For more information,please contact me now!    SpecificationR32R38/19Outside diameter (mm)3238Internal diameter, average(mm)1719External diameter, effective(mm)29.135.7Ultimate load capacity (kN)360480Yield load capacity (kN)280400Tensile strength, Rm(N/mm2)800800Yield strength, Rp0, 2(N/mm2)650650Weight (kg/m)3.45.5

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