Precision Dull Mandrel for Copper and Aluminum Tubes: This dull mandrel, made from bearing steel and treated with a chrome-plated finish, is designed to provide high-quality bends for copper and aluminum tubes. With options like elliptical, semicircular, and thumb-shaped designs, it fits a variety of U-shaped tube benders.

Commonly used in the production of air conditioning systems for both residential and automotive applications, as well as for rail transit air conditioners. The mandrel ensures smooth, bright bends free from wrinkles or scratches. Suitable for tubes of various diameters, including Φ4.76, Φ5, Φ6.35, Φ7, with custom sizes available.

Φ4.14, Φ6.0, Φ6.22, Φ6.85, Φ8.55, Φ8.8, Φ9.6, Φ10.6, Φ12.9, Φ14.1, Φ15.5, Φ16.5, Φ18.3

Guangzhou Runshi Mold Co., Ltd. focuses on the precision machinery manufacturing industry. Since its establishment, the company has mainly provided equipment molds, vulnerable parts, and cutting tools for air conditioning and heat exchanger manufacturing enterprises.

We also provide ceramic parts and tungsten steel parts for industries such as new energy, fluid control, medical devices, semiconductor, aerospace, photovoltaics, lithium batteries, petrochemicals, high-precision automation equipment, electronic communication, and automotive applications.

If you have another question, please feel free to contact us.