What is the warranty period?

The product description does not specify a warranty period, but highlights extended drill life due to alloy material and strict quality control.

Can the drill bit diameter be customized?

Yes, other diameters are available upon request. We accept OEM/ODM and can design according to customer requirements.

What rock types is this drill bit suitable for?

It is suitable for carbonate rock, limestone, chalk, clay rock, siltstone, sandstone, and other soft and hard rocks (9-grade drillability).

4inch 105-130mm Diameter High Air Pressure DTH Hammer Drill Bit

Name: 4inch 105-130mm Diameter High Air Pressure DTH Hammer Drill Bit
Brand: Hangzhou Changnuo Machinery Equipment Co., Ltd.
SKU: 2124758342

Zhejiang, ChinaHangzhou Changnuo Machinery Equipment Co., Ltd.

US$110.00-190.00

1 Piece

Product profile

Customization

Available

Length

Jobber-length

Material

High Carbon Steel

Model NO.

HDB-SP480

Usage

Well Drilling, Metal Drilling

Shank Length

165mm

Port Holes

Head Diameter

105-130mm

Color

Customized

Transport Package

Wooden Box /Cartoon

Trademark

CNMC

Origin

China

Key features

Extended Drill Life: Alloy material provides longer using life compared to similar products.

High Drilling Efficiency: Wear-resistant drill buttons keep the bit sharp, greatly improving drilling speed.

Wide Application Range: Suitable for carbonate, limestone, chalk, clay, siltstone, and sandstone (9-grade drillability).

Compatible with Many Hammers: Fits XL, Mission, COP, IR, Mach, Demag, SD, Bulroc, Halco, Digger, and other DTH hammers.

Customizable Color: Available in black, yellow, blue, red, and gold to suit customer preferences.

OEM/ODM Service: We accept OEM/ODM and design according to customer requirements for diameter, holes, and shape.

CE Certified Quality: Machinery is CE certified with strict inspection and testing before shipping.

Stable Drilling Speed: Bit design ensures stable scraping and cutting for efficient rock breaking.

Company profile

Hangzhou Changnuo Machinery Equipment Co., Ltd.Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2024-12-02Nearest Port: shanghai, ningboAverage Response Time: ≤4.89hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB

AI-Powered supplier vetting

SummaryHangzhou Changnuo Machinery Equipment Co., Ltd. is identified as both a trading company and manufacturer/factory based in Hangzhou, Zhejiang, China. Its stated products include drilling rigs, air compressors, DTH hammers, and drilling bits, with engagement across industrial, manufacturing, construction, and related sectors. The supplier reports ISO 9000, ISO 9001, and ISO 14000 certifications, three production lines, and 6–10 quality-control staff. It states that it provides non-standard customized services and emphasizes quality, customer service, and production-efficiency improvement. Export markets include Southeast Asia, Eastern Asia, and Africa, with Shanghai and Ningbo listed as nearby ports. However, the available information does not establish after-sales performance, financial credibility, documented customer cases, or strong R&D depth; total R&D engineer experience is stated as under five years. The export start date is listed as December 2, 2024, indicating limited documented export history in...

Supplier typeThe supplier is explicitly classified as both a Trading Company and a Manufacturer/Factory. This indicates combined sourcing/trading and manufacturing capabilities, although the data does not specify the proportion or scope of each activity.

CertificationsThe supplier reports ISO 9000, ISO 9001, and ISO 14000 certifications. These certifications provide explicit evidence of formal quality and environmental management systems, although certification scope and validity details are not provided.

Production capacityThe supplier is identified as a manufacturer/factory, operates three production lines, and offers drilling rigs, air compressors, DTH hammers, and drilling bits. These details support established production capability, but capacity, output, equipment scale, and delivery performance are not provided.

Customization capabilityThe supplier explicitly states that it can provide non-standard customized services to address specific production challenges. This is direct evidence of customization capability, although the available data does not define technical limits, engineering workflow, or examples of completed custom projects.

Product Q&A

Q:What products can you buy from us?

Drilling rig, DTH drilling rig, automatic drilling rig with rod changing system, rotary drilling rig, pile driver machine, core drilling rig, screw air compressor, piston air compressor, pneumatic rock drill, drill bit, Tricone bit, eccentric casing system, DTH hammer, drill rod, spare parts, etc.

Q:How can I make payment?

You can pay directly online with credit card, or TT, Western Union, LC etc.

Q:How is the shipment and how long does it take?

For large quantity or heavy products, we ship by sea or land. Efficiency depends on the destination. For small products, we ship by DHL, UPS, Fedex, or TNT. You can appoint the shipping method before we ship.

Q:How is your quality control?

We have our own experienced QC team. There will be strict inspection and testing for every order before shipping out.

Q:Do you have any certificate of authorization?

Our machinery is CE certified.