Precision Rock Drilling Tools
KAIYU (ZHEJIANG) DRILLING TOOLS CO.,LTD. – Engineering excellence since the 1970s. Delivering high-performance button bits, DTH hammers, drill rods, and tapered bits for mining, construction, and geotechnical drilling.
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KAIYU (ZHEJIANG) DRILLING TOOLS CO.,LTD. – Engineering excellence since the 1970s. Delivering high-performance button bits, DTH hammers, drill rods, and tapered bits for mining, construction, and geotechnical drilling.
A trusted name in rock drilling tools with decades of innovation and manufacturing excellence.
Taizhou City Kaiyu Metallurgy Machines and Tools Co., Ltd, formerly known as Zhejiang Kaiyu Drilling Bits Co., Ltd, is located in the economically developed coastal region of Taizhou, Zhejiang Province, China. Convenient transportation and strategic location support global distribution.
Established in the early 1970s, Kaiyu is one of the leading enterprises in China's rock drilling tools industry. We are committed to researching, developing, and manufacturing high-quality rock drilling bits using advanced carbide technology and precision engineering.
Our team includes numerous experienced engineers and high-tech professionals dedicated to innovation, durability, and performance. We serve clients in mining, quarrying, construction, and infrastructure development worldwide.
Learn more on official siteEngineered for performance, durability, and efficiency in the toughest drilling conditions.
Superior engineering, global reliability, and unmatched performance in every product.
Established in the 1970s, we are one of China’s leading rock drilling tool manufacturers.
Rigorous quality control and use of premium carbide and alloy steel materials.
Products exported to over 50 countries in mining, construction, and infrastructure sectors.
Tailored drilling tools based on rock type, depth, and operational requirements.
The carbide of button bits is typically available in semi-spherical, conical, and dome shapes. Semi-spherical buttons are ideal for medium-hard rock, conical for hard rock, and dome-shaped for high-impact applications. Selection depends on rock hardness, drilling depth, and desired penetration rate.
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