Jinan City, Shandong Province, China. [email protected]
Shandong Zhongren International Trade Co., Ltd. supplies high-quality twist drill bits designed for versatile drilling applications. Crafted from premium high-speed steel (HSS) or carbide, these bits feature a spiral flute design that ensures efficient chip evacuation and reduces friction during operation. The HSS twist drill bits excel in general machining for materials like mild steel, aluminum, and wood, offering consistent accuracy and durability. Carbide-tipped variants are ideal for harder materials such as stainless steel and cast iron, providing superior wear resistance and longer service life. The company’s twist drill bits are available in a comprehensive range of diameters (from 0.5mm to 50mm) and lengths, adhering to international standards like ISO and ANSI. With precise heat treatment to enhance hardness and stability, these bits deliver reliable performance in both manual and CNC machining setups, supporting customers across automotive, electronics, and construction industries.