Hollow R38N /21 Roof Self Drilling Rock Anchor For Soil Nailing Rock Bolts

Brand Name:OED/OEM
Certification:ISO 9001 2008
Model Number:R38N/21
Minimum Order Quantity:10pcs
Delivery Time:15 days
Payment Terms:L/C, , T/T
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Location: Zhuzhou Hunan China
Address: NO.1403,Sector A,YaoHua Plaza,Changjiang Road N.,Tianyuan Distict,Zhuzhou City,Hunan412007,China
Supplier`s last login times: within 14 hours
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Product Details

Hollow Anchor R38N/21 Roof Self Drilling Rock Anchors for Soil Nailing Rock Bolts


Features:

Outer Diameter:38mm

Inner Diameter:21mm

Utimate Load:500KN

Yield load:400KN

Weight:4.8kg/meter


Application Area:
Water well-drilling
Quarry
Foundation piling
Geothermal drilling
Soil nailing
Tunnel support
Jet grouting
Micropile
Mining


Advantages and Characteristics:

1.No casings required, because anchor bars can be drilled into loose soils without needing casings to support the boreholes.

2.Fast drilling and installation, because drilling, installation and grouting are in a single operation.

3.Both rope threads and trapezoid threads are robust and ideal for rotary-percussive drilling and ensuring a high level of bond with the borehole gout.

4.The hollow core not only serves for flushing during drilling, but also for grouting after drilling. R32 mining roof support bar.

5.Continuous threads ensure the bars can be cut and coupled at any point, or extended.

6.Different anchor bits are available for different ground conditions.

7.Duplex anti-crossion prosess ,hot-dip galvanized and epoxy coating system.


Hollow anchor bar technical data:

SizeO.D(mm)I.D(mm)Ultimate Load(KN)Yield Load(KN)Weight(kg/meter)
R25N-1425.014.02001502.3
R32L-2232.022.02201802.8
R32N-2132.021.02802302.9
R32N-18.532.018.52802303.4
R32S-17.532.017.53602803.5
R32S-1532.0153602804.1
R38N-2138.021.05004004.8
R38N-1938.019.05004005.5
R51L-3851.038.05504506.0
R51L-3651.036.05504507.6
R51N-3651.036.08006307.6
R51N-3351.033.08006308.4
T76N-4976.049.01600120016.5
T76S-4576.045.01900150019
T30-1130.011.03202603.3
T30-1430.014.02752202.9
T40-1640.016.06605257.1
T40-2040.020.05404255.6
T52-2652.026.093073010
T73-5673.056.0103583010.8
T73-5373.053.0116097014
T73-4573.045.01600127017.5
T103-78103.078.02270180025
T103-51103.051.03660267044
Steel gradeAcc. to EN10083-1 / EN10210-1
Thread directionLeft hand / Right hand
Thread standardISO 10208 / ISO1720 / Other international standards

China Hollow R38N /21 Roof Self Drilling Rock Anchor For Soil Nailing Rock Bolts supplier

Hollow R38N /21 Roof Self Drilling Rock Anchor For Soil Nailing Rock Bolts

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