Name: 8 Inch 311mm Carbon Steel DTH Hammer Bit for Mining and Water Well Drilling
Brand: KSQ Technologies (Beijing) Co. Ltd
SKU: DHD380-311mm
Price: 525.00 USD
Availability: InStock

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8 Inch 311mm Carbon Steel DTH Hammer Bit for Mining and Water Well Drilling

Product Details:

Place of Origin:	CHINA
Brand Name:	MIROC
Certification:	ISO
Model Number:	DHD380-311mm

Payment & Shipping Terms:

Minimum Order Quantity:	1
Delivery Time:	20-30
Supply Ability:	3000

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Detailed Product Description

Type:	DRILL BIT	Material:	Carbon Steel
Use:	Well Drilling	Product Name:	DHD380 DTH Bit
Application:	DTH Hammer,DTH Drill	Process:	Forging+Machining+surface Treatment
Bit Face:	Flat Face Bit, Convex Face Bit, Concave Face Bit	Applicable Industries:	Building Material Shops, Manufacturing Plant, Construction Works , Energy & Mining, Mining,Construction,Tunneling,Quarrying,Water Well
Highlight:	8 Inch DTH Hammer Bit , 311mm Button Drill Bit , Carbon Steel DHD380 DTH Bit

8 Inch DHD380-311mm DTH Hammer Drill Button Bit

High-performance down-the-hole (DTH) drilling tool engineered for mining, water well drilling, and large-scale foundation applications in medium to extremely hard rock formations.

Product Overview

The DHD380 Hammer Bit is designed for compatibility with DHD380 or similar large-diameter DTH hammers, delivering superior durability, penetration rate, and operational economy in demanding drilling operations.

Key Features & Benefits

Extended Bit Life: Forged from premium alloy steel with high-density, wear-resistant tungsten carbide buttons for maximum service life in abrasive formations
Superior Penetration Rate: Optimized button layout and advanced head profile ensure efficient energy transfer for faster drilling
Excellent Hole Stability: Precisely arranged gauge buttons maintain consistent hole diameter and straight-hole accuracy
Efficient Debris Removal: Strategically sized flushing holes allow optimal air flow for effective cuttings removal
Heavy-Duty Connection: Robust standardized thread connection (DHD 380 R32 or similar) withstands high torque and impact stress

Technical Specifications

Head Shape	Head Diameter (mm)	Shank Length (mm)	Spline	Port Holes	Button Type	Button Qty. × Dia. (mm)	Weight (Kg)
Concave Face	203	350	10	2	Domed	Gauge: 10×Ø18 Front: 4×Ø18 + 10×Ø16	48.5
Concave Face	216	350	10	2	Domed	Gauge: 10×Ø18 Front: 4×Ø18 + 10×Ø16	52.1
Concave Face	230	350	10	2	Domed	Gauge: 12×Ø18 Front: 12×Ø18 + 6×Ø16	54.8
Concave Face	235	350	10	2	Domed	Gauge: 12×Ø18 Front: 12×Ø18 + 6×Ø16	55.5
Concave Face	254	350	10	2	Domed	Gauge: 12×Ø18 Front: 12×Ø18 + 8×Ø16	62.4
Convex-Concave Face	275	350	10	3	Domed	Gauge: 15×Ø18 Front: 35×Ø16	77.6
Convex-Concave Face	305	350	10	3	Domed	Gauge: 15×Ø18 Front: 35×Ø16	77.6

Selection Guide: Head Profile & Button Type

Head Profiles

Flat Face Bit: Balanced cutting action for medium to hard, stratified formations
Convex Face Bit: Concentrates impact energy for very hard and brittle rock
Concave Face Bit: Shearing action for softer to medium-hard, ductile formations

Button Types

Spherical (Domed) Buttons: Maximum wear resistance for hardest and most abrasive rock
Ballistic (Chisel) Buttons: Sharper cutting edge for higher penetration in medium-hard to hard rock

Why Choose the DHD380 Hammer Bit?

Proven Reliability: Built to exacting DHD hammer compatibility standards
Cost-Effective Drilling: Maximizes meters drilled per bit, reducing downtime and tooling costs
Versatility: Available in various diameters and designs for specific geological conditions
Global Support: Backed by extensive technical support and worldwide supply network