Flat Face bits are a general purpose bit that will perform in all rock conditions but should be used especially for hard or abrasive conditions like granite, basalt, and hard limestone. Flat face bits are the best choice for drilling in abrasive rock formations.
Flat Face bits are a general purpose bit that will perform in all rock conditions but should be used especially for hard or abrasive conditions like granite, basalt, and hard limestone. Flat face bits are the best choice for drilling in abrasive rock formations.
Semi-dome bits are designed for fast penetration rates in softer rock like shale and limestone with low silica content.

Re-trac Skirt
Designed to improve hole straightness, as well as to assist in retrieval of the drill string. The splines will also improve the hole flushing characteristics of the bit due to the chip ways between the splines.
Heavy Duty Skirt
A variation on the standard skirt design, available for very abrasive conditions. The heavy duty skirt has added wear material towards the front of the skirt to protect the bit against abrasive cuttings.
Standard Skirt
Typically smaller than the head diameter to avoid cuttings and the rock wall, therefore optimizing hole flushing.

DOWN-THE-HOLE (DTH) BITS
Concave Face designed for unconsolidated or broken rock. These face features will help drill straighter holes in medium to hard formations.
Convex/Concave Face bits are a hybrid design for fast penetration and straighter holes in unconsolidated rock with low silica content. Typical applications are medium to hard formations.
Convex Face bits are designed for fast penetration rates in softer rock like shale and limestone with low silica content.
Flat Face bits are a general purpose bit that will work in all rock conditions but should be used especially for hard or abrasive conditions like granite, basalt, and hard limestone. Flat face bits are the best choice for drilling in a high silica environment.
Carbide Designs
Perhaps the most fundamental decision when selecting different carbide configurations is profile shape. Button bits most commonly have either a hemispherical or semi-ballistic carbide design; however it is not uncommon to use other carbide designs as well. Below are selections of the different carbide designs.

Most face designs for button bits are offered in multiple carbide configurations and typically differ in diameter, shape (i.e. profile) and quantity. There are some general guidelines to follow while selecting between multiple carbide configurations including resistance to wear, penetration rate, vibration, and specific rock conditions.

All bit diameters are larger than the given dimensions in the catalog
Cross bits: Can be a maximum of +1mm due to manufacturing tolerance
Button bits: Some bit designs can be a maximum +3mm to compensate for fast diameter wear.
The minimum diameter for all button bits is +1.5mm above the given dimensions
Keep in mind that a bit always gives a bigger hole than the stated bit diameter.
BIT CLASSIFICATION
H: Very hard to hard rock..........................................> 2500 bar (250 MPa)
M: Medium hard rock.....................................1500-2500 bar (150-250 MPa)
S: Soft rock ................................................................. < 1500 bar (150 MPa)

Returns and Compensations on Quality Failed Bits and Rods.
Warranty returns:
Absolutely no product shall be accepted for analysis without the prior quality failed report written and photos taken clearly on site.
All freight costs shall be prepaid by purchaser. The purchaser can choose accept new bits or rods instead of refunding in cash after inspection of returned product. All returns compensations subject to inspection and final approval.
Special Orders
Special items can be ordered from the factory with a confirming purchase order, but may be subject to minimum quantity requirements. Minimum quantity requirements are subject to fluctuation without prior notice. Shipping tolerance of +/- 10% may be applicable. Special order items are not subject to return.
Cancellations
Cancellation of special order items will not be accepted.
Terms of Payment and Delivery Time
Upon credit approval, domestic terms are Net 30 days after the date of invoice unless otherwise stated. Payment Ways: T.T, Western Union and PayPal(Only For Samples Orders)
All pricing, terms and conditions are subject to change without prior notice.
Delivery Time: Upon Stock Availability and Order Production Schedule. Time Frame for New Quantity order processing time: 20-45 days after down payment.
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