Multi-station bolt/nut/part formers

Chun Zu cold formers have been continuously improved over four decades of research and development. Along with the growth of Taiwan ’s fastener industry, it has developed the most comprehensive lineup on the market. We have shipped more than 10,000 units of machines worldwide in more than 50 countries with thousands of customers' satisfaction. Chun Zu machines are the best choice for your business!

CPR Thread rolling machine

CPR series are thread rollers, developed by Chun Zu, with high speed and stability, and provides various detection and customization options.

CH/CDH Header

CH series can produce varied head type screws, like pan head, flat head, socket head, bugle head, truss head…etc. The products are with high concentricity.

CNH Header

The CNH series is 1-Die 2-Blow heading machine. It is an advanced forming machines, suitable to produce simple products with higher precision.


The CDH series is 2-Die 2-Blow heading machine, which is featured with better productivity and more diversified forming


The CSH series is 1-Die 2-Blow open die Reheader. It is designed based on our heading machine. It can save production cost by reducing materials and eliminate other secondary operations.

trimming dies

Recently, the manufacturing of bolts has been made by high speed multi-stage forming machines. To meet various conditions and reduce costs, it is impossible to use a single material and heat treatment. After years of continuous research and development by Chun Zu,we introduce five types of materials to match customer needs.
Our company can provide various types of Hexagon trimming die、Square trimming die 、bihexagon trimming die and other special trimming dies
Welcome to send us the inquiries w...

Thread Rolling Flat Dies

Threading rolling dies and the metric and the US standard thread rolling die for tapping screw manufactured by
Chun Zu Machinery Industry Co., Ltd, are made of alloy tool steel of high hardness and strength under full
automatic computerized machinery precision processing procedure. Our products perform the features as follows

heading dies

Hot and Cold Forming Tools