Xingtai Zhengjia Machinery Manufacturing Co., Ltd. is located in Ren County Xingwan Town, a renowned mechanical manufacturing hub in North China, where the famous Fuyang River flows. It is conveniently situated with access to the Jing-Shen Expressway, National Highway 107, and Jing-Guang Railway to the west, National Highway 106 to the east, and close to Shijiazhuang to the north. The geographical location is superior with excellent transportation.
Xingtai Zhengjia Machinery Manufacturing Co., Ltd. integrates research and development, manufacturing, and sales, and has considerable strength in the machinery industry. With years of accumulated experience, Zhengjia Machinery has been committed to development, improvement, and updates. We specialize in producing various models and specifications of centerless cylindrical polishing machines, round tube polishing machines, multi-station polishing machines, integrated straightening, rust-removing, and painting machines for steel pipes, fully automatic CNC rebar straightening and cutting machines, rapid mortar spraying machines, and woodworking push saws. Over the years, we have earned high praise from a wide range of users across more than 20 provinces, cities, and regions with our high-quality products, reasonable prices, innovative business approaches, and comprehensive after-sales service. Our products are distributed throughout the country and have been exported overseas.
Xingtai Zhengjia Machinery Manufacturing Co., Ltd. enjoys recognition for its integrity, strength, and product quality in the industry. Welcome friends from all walks of life to visit, guide, and engage in business negotiations.



Automatic External Round Polishing Machine Technical Specifications (with automatic rapid adjustment)
Power Source: 380V, 50Hz
2. Total power of the equipment is approximately 23kw; 6 grinding head motors, 12 adjusting motors, and a guide wheel motor with 0.75kw.
3. Machinery Weight: Approximately 300 kg.
4. Mechanical Dimensions: 650*400*550mm
5. Feed Rate: Adjustable from 1 to 3 meters per minute, controlled by an infinitely variable speed motor.
6. Polishing Wheel: Speed of 2800 RPM. Wheel Diameter: 250-300mm, Width: 80mm, Bore: 32mm
7. Optional Environmental Protection Dust Removal Equipment: 2.2kw fan motor, 6 air ducts, and 1 dust collection bag.
8. Wet Throw Unit (Optional) Pump: 90W






























