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Shell Expanshion Rock Bolt

Shell Expanshion Rock Bolt

Packaging Details : Cartons/Bundles
Port : Any Chinese Port
Payment Terms : L/C, T/T, Paypal
Diameter : Various
Material : Seamless Steel Pipe En10083-1
Production Capacity : 40, 000m/Month
Min. order : 1000 Meter
Main Markets : North America, South America, Southeast Asia, Africa, Western Europe
Place of Origin : china
Category : Truck Body Parts
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Prestressed hollow 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.
Material: Seamless steel pipe 40Cr, ASTM /EN10083-1 standard steel pipe
Diameter: R25N-T40/16
Length: Various
1, rock stabilization in tunneling, railway, highway road
2, roof support in underground work
3, slope maintenance
Standard length(m) 1/1.5/2/2.5/3/3.5/4/4.5/5/5.5/6
Construction method:
1. Drill the hole and clean
2. Insert the anchor bolt to the hole bottom
3. Pre-stress the anchor rod and assure the anchor head contacting closely with hole bottom, then rotates the anchor rod until it is fastened, and install stopper, plate and nut;
4. Apply pre-stress to the designed value, use the stretching gauge of anchor bolt or spanner;
5. Connect of grouting joints to grout;
We can also produce customized rock bolts.&
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standardoutside  diameterinternal  diameter  average ultimate  load  capatityyield  loadtensile  strengthyield  strengththread  type
T76S764519001600740560  ...
T30/113011320260740560  ...
T40/164016660525740560  ...
length1m, 2m, 3m, 4m, 5m, 6m

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