Engineered for soft coastal soils, alluvial deposits, and fractured basalt formations across Greater Surabaya, Tanjung Perak Port expansion, and East Java civil projects.
As Indonesia's second-largest metropolis and the main maritime hub connecting Java to eastern provinces (Nusa Tenggara, Maluku, and Papua), Surabaya represents a vital epicenter for heavy foundation engineering, mineral extraction, water well drilling, and infrastructure development.
Operating Down-the-Hole (DTH) drilling tools in East Java requires specialized metallurgical engineering. The region presents complex geological strata ranging from soft alluvial coastal clays near Tanjung Perak to abrasive volcanic basalt, hard structural andesite, and coral limestone formations with Unconfined Compressive Strength (UCS) rating up to 220 MPa in Pasuruan, Malang, and Mount Bromo peripheral mining districts.
Contractors in Surabaya, Sidoarjo, and Gresik require DTH drill bits that balance ultra-fast Rate of Penetration (ROP) with high wear resistance against micro-fracturing. Direct Chinese OEM factory supply chains eliminate intermediary markup, ensuring continuous stock of DSD, QL, Mission, and COP shank configurations delivered directly via Tanjung Perak Port.
Consult Technical EngineerOur DTH drill bits are forged from high-grade nickel-alloy structural steel (23CrNiMoMD) and vacuum heat-treated to ensure core toughness and exterior hardness.
Configured with premium YK05 and YK05.5 grade virgin tungsten carbide buttons. Available in Spherical (maximum abrasion resistance in hard basalt), Ballistic (fastest penetration in medium-hard rocks), and Parabolic button profiles for multi-purpose quarrying.
Available in Concave Face (excellent directional control and straight hole alignment in medium-hard rocks), Convex Face (high ROP in soft to medium abrasive strata), and Flat Face (maximum strength in extremely hard and broken geological zones).
Computer-modeled internal air channels optimize high-pressure airflow (up to 35 bar / 500 PSI). Rapid removal of rock cuttings prevents bit re-crushing, cools carbide insert surfaces, and increases drilling velocity by up to 28%.
With over 40 years of continuous innovation, Shandong KAT Drilling Tools stands as China's premier manufacturer of rock drilling, mining, and geotechnical equipment. Our total quality management guarantees exceptional field performance across Indonesian job sites.
More than 40 years of rock drilling engineering mastery built directly into every DTH bit and drill rod.
Maximizing penetration rates and hole straightness to lower cost per meter for Surabaya contractors.
Leading enterprise in China utilizing fully automated CNC machining centers and hot isothermal quenching.
Complete range of DTH hammers, bits, self-drilling anchor systems, and top hammer tools for all ground conditions.
Below is an indicative direct factory pricelist for standard DTH drill bits formatted for enterprise procurement directors, mining operators, and civil engineering buyers in East Java.
| Bit Size (Inch / mm) | Shank Type Compatibility | Carbide Gauge & Shape | Target Rock Formation (UCS) | Est. FOB Price (USD) | CIF Surabaya Price Range |
|---|---|---|---|---|---|
| 3.5" (90 mm) | DSD335 / COP34 / Mission30 | 8 x 12mm Spherical / Dome | Soft Basalt, Limestone (<100 MPa) | $45.00 - $62.00 | Contact Factory Direct |
| 4.0" (115 mm) | DSD340 / QL40 / COP44 | 8 x 14mm Ballistic / Parabolic | Medium Andesite (100 - 150 MPa) | $68.00 - $88.00 | Contact Factory Direct |
| 5.0" (138 mm) | DSD350 / QL50 / Mission50 | 10 x 14mm Concave / Flat | Abrasive Volcanic Rock (120-180 MPa) | $110.00 - $145.00 | Contact Factory Direct |
| 6.0" (152 mm) | DSD360 / QL60 / COP64 | 12 x 16mm Spherical Heavy Duty | Hard Andesite & Quartzite (>180 MPa) | $165.00 - $210.00 | Contact Factory Direct |
| 8.0" (203 mm) | DSD380 / QL80 / Mission80 | 14 x 18mm Dome Concave Face | Deep Foundation Piling & Water Wells | $320.00 - $410.00 | Contact Factory Direct |
| 10.0" (254 mm) | SD10 / NUMA100 / QL100 | 18 x 18mm Flat Face Heavy Duty | Port Harbor Marine Foundations | $580.00 - $720.00 | Contact Factory Direct |
| 12.25" (311 mm) | SD12 / NUMA120 / QL120 | 22 x 19mm Reinforcement Buttons | Large Diameter Foundation Shafts | $950.00 - $1,250.00 | Contact Factory Direct |
* Note: Prices vary based on raw steel nickel surcharges, carbide button grades (YK05 vs. YK05.5), order volume, and customized face geometries. Full CONTAINER LOAD (FCL) discounts available for Surabaya distributors.
Shipping directly from Qingdao or Tianjin Port straight to Tanjung Perak Port in Surabaya ensures short transit lead times (typically 12–16 days direct sea freight). Our logistics department handles all export documentation, Certificate of Origin (Form E for ASEAN-China Free Trade Area), tax classification HS codes, and custom clearance support to streamline importing for Indonesian clients.
For major infrastructure projects in East Java—such as the Teluk Lamong port extension, Mojokerto highway cuts, and Pasuruan quarrying operations—drilling operational efficiency is measured strictly by Cost Per Meter (CPM).
Shandong KAT's DTH drill bits feature localized stress-relieved forged bodies that eliminate shank shearing under heavy rotation torque. By pairing our bits with high-pressure compressors (20–30 bar), drill rigs achieve faster penetration rates, reducing diesel consumption per meter drilled by up to 18%.
Addressing key technical, purchasing, and logistical inquiries from Indonesian drilling contractors and equipment fleet buyers.
SHANDONG KAT DRILLING TOOLS is one of the most professional manufacturers of Rock Drilling Tools in China. In terms of overall strength, it takes the lead among enterprises of the same industry in China. The company mainly produces over 500 kinds of products such as rock drilling tools, mining tools, self-drilling anchor systems, and DTH drilling accessories.
Equipped with heavy CNC machining centers, automated heat treatment furnaces, and ultrasonic non-destructive testing lines, Shandong KAT ensures that every DTH drill bit shipped to Surabaya meets strict global quality metrics.
Explore our broader selection of DTH bits, top hammer tools, self-drilling anchors, and excavation accessories available for wholesale supply to Surabaya.
Optimize your drilling operations in Surabaya and East Java with direct factory-priced DTH bits, custom face designs, and fast sea freight to Tanjung Perak Port.
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