PTJ CNC Machining Factory

PTJ CNC Machining Factory

1 News & Press Release found

PTJ CNC Machining Factory News

  • Spring Design Attention And Roll Forming Method

    Spring Design Attention And Roll Forming MethodThe coiling characteristics and methods of springs are divided into cold coiling method and hot coiling method. Cold winding method: When the diameter of the spring wire is less than 8mm, the cold ...