FAQ

Answer:
TANK DRILLING is a rock drilling tools manufacturer and supplier, providing DTH drilling tools, top hammer drilling tools, tricone bits, PDC bits, PDC cutters, core drilling bits, drag bits, drill rods, adapters, and casing drilling systems for mining, water well, oil & gas, construction, geothermal, and geological exploration projects.

Answer:
We are a manufacturer and integrated drilling tools service provider, combining factory production with global sales support.
Our manufacturing base ensures stable quality and cost control, while our overseas business teams in Changsha and Shenzhen provide fast communication and professional service.
Located in Shenzhen, one of China's major export hubs, we benefit from convenient port access, efficient logistics, and flexible shipping solutions. This allows us to offer faster delivery, better freight options, and reliable global supply to our customers.

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Our main products include tricone bits, DTH hammers, DTH drill bits, top hammer button bits, tapered button bits, drill rods, shank adapters, coupling sleeves, PDC cutters, PDC drill bits, core drilling bits, drag bits, RC drilling tools, and casing drilling systems such as eccentric and concentric casing systems.

Answer:
The right drill bit depends on rock formation, hole diameter, drilling depth, drilling method, rig type, and project application. DTH bits are suitable for deep hard rock drilling, top hammer bits for quarrying and tunneling, tricone bits for rotary drilling, PDC bits for efficient shearing in suitable formations, core bits for geological sampling, and drag bits for soft water well formations.

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There is no single best drill bit for all hard rock drilling. For deep hard rock holes, DTH button bits are usually recommended. For top hammer drilling, threaded button bits or tapered button bits are suitable. For rotary drilling, tricone bits can be used in hard formations. For suitable hard and abrasive formations, PDC bits may also improve drilling efficiency and service life.

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DTH drilling places the hammer directly behind the bit inside the hole, making it suitable for deeper holes and larger diameters. Top hammer drilling transfers impact energy from the rock drill through drill rods, making it efficient for shallow to medium-depth drilling in quarrying, tunneling, mining, and construction.

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Tapered button bits are mainly used with hand-held rock drills and air-leg drills, connected by taper angles such as 7°, 11°, or 12°. Threaded button bits are used with hydraulic drilling rigs and connected by threads such as R32, R38, T38, T45, and T51. Tapered bits are common for small mining and quarry work, while threaded bits are used for higher-power drilling systems.

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PDC cutters are used as cutting elements in PDC drill bits, PDC core bits, mining tools, oilfield bits, coal mining tools, and wear-resistant drilling components. They offer high hardness, wear resistance, thermal conductivity, and efficient rock shearing performance.

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Core drilling bits are used for geological exploration, mineral exploration, rock sampling, hydropower investigation, engineering geology, and deep-hole wireline coring. Common types include impregnated core bits, surface-set core bits, wireline core bits, double tube core bits, and PDC core bits.

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Drag bits are recommended for soft to medium formations such as sand, clay, soft shale, and soft limestone. They are widely used in water well drilling, environmental drilling, geothermal shallow drilling, and pilot hole drilling. They are not recommended for coarse gravel or hard rock.

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Casing drilling systems are used in overburden, broken formations, loose ground, boulders, and unstable holes where casing needs to advance while drilling. We supply eccentric casing systems, concentric casing systems, and related casing drilling tools for water wells, foundation drilling, geotechnical projects, and construction drilling.

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Drilling speed is affected by rock hardness, abrasiveness, bit design, carbide quality, air pressure, flushing efficiency, rotation speed, feed pressure, and drilling method. Choosing the correct drilling tools and optimizing parameters can significantly improve penetration rate and reduce downtime.

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To reduce drilling cost per meter, choose the correct drill bit for the formation, use high-quality drilling tools, maintain stable flushing, optimize drilling parameters, and reduce bit replacement frequency. A longer-life bit with stable performance often lowers total drilling cost more effectively than the cheapest option.

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Yes. We provide OEM and customized drilling tools according to customer requirements, including bit diameter, thread type, taper angle, button shape, face design, shank type, matrix hardness, packaging, and marking. Custom solutions are available for mining, water well, geothermal, oil & gas, and geological exploration projects.

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To provide an accurate quotation, please send us the product type, size, thread or shank type, hole diameter, rock formation, drilling depth, quantity, and destination country. Photos or existing product drawings can also help us confirm specifications faster.

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For standard drilling tools, the typical lead time is about 7–15 days depending on stock and order quantity. For customized products, production usually takes 15–25 days. Large orders or special designs may require additional production time.

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We control quality through raw material selection, forging or machining inspection, heat treatment control, carbide or diamond quality inspection, dimensional checks, hardness testing, and final inspection before shipment. Our goal is consistent drilling performance in real field conditions.

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Yes. We provide technical support for product selection, drilling parameter suggestions, troubleshooting, and replacement recommendations. If customers face abnormal wear, slow penetration, hole deviation, or tool mismatch, our team can help analyze the cause and suggest solutions.

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We export to more than 30 countries and regions, including Ghana, United Kingdom, Sweden, Cameroon, Lithuania, Guyana, South Africa, Russia, South Korea, Australia, Chile, Peru, Brazil, India, Indonesia, Kazakhstan, Ukraine, Norway, and the Middle East. Our customers include mining companies, drilling contractors, distributors, equipment manufacturers, and geological survey companies.

Answer:
Customers choose TANK DRILLING because we provide complete drilling tool solutions, stable manufacturing quality, competitive pricing, fast response, customization support, and field-based technical service. We focus on helping customers drill faster, reduce cost per meter, and improve tool life.

→ DTH button bits, top hammer button bits, tricone bits, and PDC bits can all be used depending on drilling method, depth, and formation.

→ Match the bit type with rock hardness, drilling method, hole diameter, drilling depth, and rig type.

→ Use the right bit, optimize drilling parameters, improve flushing, and reduce downtime.

→ DTH tools, top hammer tools, tricone bits, PDC bits, PDC cutters, core bits, drag bits, drill rods, adapters, RC tools, and casing systems.