📦 Brocas DTH

Bits Abridores de Rosca

Name: Bits Abridores de Rosca
Brand: Kaishan
SKU: THREAD-OPENER-BITS
Availability: InStock

Model: THREAD-OPENER-BITS

Kaishan THREAD-OPENER-BITS are specialized DTH drill bits designed for thread opening and reaming in down-the-hole drilling. Engineered with high-grade tungsten carbide buttons and a durable alloy steel body, these bits deliver reliable performance in hard rock and challenging geological conditions. The thread-opener design helps enlarge and clean pilot holes, ensuring smooth casing advancement and efficient hole completion. Compatible with standard DTH hammers and drill pipes, they are ideal for mining, water well drilling, quarrying, and construction projects. Available in various diameters and thread connections to match your drilling rig. With precision manufacturing and strict quality control, Kaishan THREAD-OPENER-BITS offer excellent wear resistance, fast penetration, and long service life, reducing downtime and overall drilling costs. Trusted by contractors worldwide, these bits are a smart choice for efficient thread opening operations.

Technical Specifications

Modelo

THREAD-OPENER-BITS

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Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

## Overview Kaishan THREAD-OPENER-BITS are purpose-built DTH drill bits for thread opening and reaming applications in down-the-hole drilling. As a leading manufacturer of drilling tools, Kaishan combines advanced metallurgy and precision machining to produce bits that excel in hard rock formations. These bits are designed to enlarge pilot holes and prepare threads for casing advancement, ensuring smooth and efficient drilling operations. ## Technical Features - **High-Grade Tungsten Carbide Buttons**: Provide superior wear resistance and impact toughness, extending bit life in abrasive ground. - **Durable Alloy Steel Body**: Heat-treated for maximum strength and fatigue resistance, withstanding high torque and impact loads. - **Optimized Button Layout**: Engineered for efficient rock cutting and improved hole cleaning, reducing regrinding and energy consumption. - **Thread Opening Design**: Specially shaped to ream and clean threads, facilitating easy casing installation and retrieval. - **Multiple Connection Options**: Available with standard API threads and custom connections to fit various DTH hammers and drill pipes. - **Precision Manufacturing**: CNC-machined for accurate dimensions and consistent quality, ensuring reliable performance. ## Applications Kaishan THREAD-OPENER-BITS are widely used in mining, water well drilling, quarrying, and construction. They are ideal for: - Opening threads in casing advancement systems. - Reaming pilot holes in hard rock. - Ensuring smooth installation of casing and screen pipes. - Improving hole quality and reducing drilling time. ## Why Choose Kaishan With decades of experience in drilling equipment, Kaishan delivers reliable, high-performance tools backed by global service and support. Our THREAD-OPENER-BITS are tested rigorously to meet international standards, ensuring you get consistent results and lower cost per meter drilled.

Technical Selection

Key parameters for matching this machine to your job. Send us your hole diameter, depth and rock condition and our engineers will confirm the right configuration.

Modelo

THREAD-OPENER-BITS

Not sure this model fits? Tell us the hole diameter and depth — we will confirm the matching rig, compressor and hammer.

Check with an engineer

Key Advantages

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High-grade tungsten carbide buttons for excellent wear resistance

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Durable alloy steel body with heat treatment for long life

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Optimized button layout for fast penetration and hole cleaning

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Thread opening design for easy casing advancement

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Compatible with standard DTH hammers and drill pipes

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Precision manufacturing for consistent quality and performance

Threaded Series Models

Compare specifications across the series to find the right model.

Model	Model	Type	Size	Application	Material	Inquire
THREAD-OPENER-BITSThis model	THREAD-OPENER-BITS	DTH Drill Bit / Thread Opener Bit	76mm - 305mm (customizable)	Mining, Water Well Drilling, Quarrying, Construction	Tungsten Carbide Buttons + Alloy Steel Body	Get a Quote
R25	R25	DTH Button Bit	25 mm spline drive shank	Mining, quarrying, water well drilling, construction	Alloy steel body with tungsten carbide buttons	Get a Quote
R32	R32	DTH Button Bit	64 mm - 102 mm (2.5" - 4")	Mining, Quarrying, Water Well Drilling	Alloy Steel Body with Tungsten Carbide Buttons	Get a Quote

Compare 2–3 models? Tick the boxes and send them together — we will quote each one for you.

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Tip: select multiple models and click “Inquire All” — the selected models are added to the quote form automatically, so you get a faster quotation.

Not sure which model fits your project? Send us your working pressure and air demand — our engineers will recommend the right one.

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Main Components

Tungsten carbide buttons
Alloy steel body
Flushing holes
Thread connection shank
Button holes
Grooves for cuttings removal
Wear-resistant coating
Identification markings

Working Principle

DTH (Down-The-Hole) drill bits operate by receiving impact energy from a down-the-hole hammer, which is driven by compressed air. The hammer's piston strikes the bit's shank, transmitting high-frequency impact forces to the tungsten carbide buttons. As the bit rotates, the buttons crush and cut the rock, creating a hole. The THREAD-OPENER-BITS are specifically designed with a tapered or stepped profile to enlarge pilot holes and clean threads for casing advancement. The flushing air, also from the hammer, travels through the bit's flushing holes to remove cuttings and cool the bit. The combination of impact, rotation, and flushing ensures efficient rock breakage and hole cleaning. The thread opening feature allows the bit to ream the hole to the required diameter while preparing the thread profile, enabling smooth casing installation. This design reduces the need for separate reaming tools, saving time and cost.

Detailed Features

▸High wear resistance
▸Excellent impact toughness
▸Fast penetration rate
▸Long service life
▸Precise thread opening
▸Compatible with standard hammers
▸Easy to install and replace
▸Cost-effective drilling

Packaging & Shipping

Each Kaishan THREAD-OPENER-BIT is packed in a wooden case or carton with rust-proof protection, then secured on pallets for container shipment. Standard export packaging ensures safe transport. We ship from major Chinese ports such as Shanghai, Qingdao, or Tianjin. Delivery time is typically 15-30 days after order confirmation, depending on quantity and destination. For urgent orders, expedited shipping can be arranged.

After-Sales Service

Kaishan offers a 12-month warranty on THREAD-OPENER-BITS against manufacturing defects. Our 24-hour customer service team provides technical support and troubleshooting. We offer free training on bit selection, operation, and maintenance for bulk orders. A full range of spare parts and accessories is available for quick shipment. Our global network ensures timely after-sales support wherever you are.