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Diamond Products

Country/Region china
Company ROSCHEN HOLDINGS Co.,ltd
Categories Diamond Core Bit
ICP License Issued by the Chinese Ministry
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    Diamond Products


    ROSCHEN
    Surface Set Diamond Coring Bits



    Surface Set Diamond Coring Bits

    Surface set bits can be very cost effective in soft sedimentary rocks. Roschen offers a wide variety of designs for traditional surface set diamond bits and offers the new diamond impregnated Surface Set XP bit.
    New Surface Set XP
    Roschen's new Surface Set XP bit, utilizes impregnated diamond technology to offer a more versatile and longer-lasting alternative to traditional surface set bits. Field tested for over a year, the new Surface Set XP bits achieved a minimum of 200% increase in life over traditional surface-set bits.

    Traditional Surface Set Bit Options:
    Surface set size:

    Roschen bits are available in all standard drilling sizes as well as a number of region-specific sizes.
    Core Diameter Offering
    Size
    Core
    Hole
    AQTK
    35.5 mm (1-3/8 in)
    48 mm (1-7/8 in)
    BQ
    36.4 mm (1 -7/16 in)
    60 mm 2-3/8 in)
    BQTK
    40.7 mm (1-5/8)
    60 mm (2-3/8 in)
    NQ
    47.6 mm (1-7/8 in)
    75.7 mm (3 in)
    NQTK (NQ2")
    50.6 mm (2 in)
    75.7 mm (3in)
    NQ3
    45 mm (1-3/8 in)
    75.7 mm (3 in)
    HQ
    63.5 mm (2-1/2 in)
    96 mm (3-3/8 in)
    HQ3
    61.1 mm (2-3/8 in)
    96 mm (3-3/8 in)
    PQ
    85 mm (3-3/8 in)
    122.6 mm (4-7/8 in)
    PQ3
    83 mm (3-1/4 in)
    122.6 mm (4-7/8 in)

    Gauge

    Roschen bits are available in three standard gauge configurations:
    Standard gauge (S)
    Equal to reaming shell gauge (R)
    Oversized OD (OS, INCHES)
    Waterways:

    Where applicable, waterway options will be identified as follows:
    Spiral (SW)
    Double angle (DA)
    Face discharge (FD)
    Diamond Configuration:

    Once a crown profile has been identified, diamond grade and diamond size are the key factors to choose from to maximize your drill bit’s performance for life and speed.
    Standard Diamond Sizes
    (In Stones per Carat - SPC)
    SPC Range
    Diamond Size
    6/10
    0.098 in
    2.49 mm
    10/15
    0.085 in
    2.16 mm
    15/25
    0.071 in
    1.80 mm
    25/35
    0.063 in
    1.560 mm
    35/45
    0.058 in
    1.47 mm
    45/55
    0.054 in
    1.37 mm
    55/70
    0.048 in
    1.22 mm
    70/90
    Buy Diamond Products at wholesale prices
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