All copper sleeves of the QIAOSEN press machine are made of tin phosphorus bronze ZQSn10-1, and general manufacturers use BC6 (ZQSn 6-6-3) copper material.
Advantages: The strength is 1.5 times higher than ordinary BC6 copper, with high strength, low wear, and long accuracy retention time
![Advantages7](http://www.qiaosenpresses.com/uploads/Advantages7.jpg)
Post time: Apr-23-2023