| Certification: | ISO 9001:2000 |
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| Standard: | AISI |
| Surface Treatment: | Spray-Paint |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier Anbit Eccentric Drilling Bits Eccentric System For Drilling 325mm
1. When starting drilling, the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly.
2. When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in. Allowing the drill bit assembly to be pulled up through the casing.
3.Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means if cement grout or some other sealing agent.
4.Drilling continues to the desired depth in the bedrock using a conventional drill string.
Suppliers with verified business licenses
Audited Supplier 
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