Warranty: | 6 Months |
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Certification: | ISO 9001:2000, ISO 9001:2008 |
Standard: | AISI |
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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91# flat top coreless drill bits for mining.
Common models | 75, 94, 113, 133, 153mm |
Commonly used drill pipes | 42, 50, 63.5, 73, 76, 89mm |
Mainly used for | grouting holes, wattle discharge holes, slopes, supports, anchor cables, wells |
Applicable strata | red sandstone, mudstone, coal seam, backfill, limestone, dolomite medium intact strata |
91# flat top coreless drill bits for mining.
Q1: What are your main products, and used for?
Suppliers with verified business licenses