PTJ SHOP-Global innovation leader in metalworking.

Advanced 5-axis milling technology or 6-sided complete turning / milling technology.

Services Range

Our machining services are bolstered by our extensive PTJ machine library and general breadth of CNC machining.

Equipment List

From a single Swiss automatic screw machine in 2007, the PTJ inventory of precision screw machining equipment

Metal Work

We can process all kinds of metal and supper alloy and mass parts production.Include Aluminum,titanium and more

About quality

We Are Skilled In Providing Quality Parts

ISO9001 Certified

We have passed ISO9001:2015 quality certification and can meet customers’ needs

3MM Team

With tracking and analyzing,CMM Team assure consistent, reliable quality for every part, every time.

The Products We Maked For Global Customers

Our Custom CNC machining services

With over 79 sets of 3, 4, and 5-axis CNC machines in China, PTJ Hardware is your ideal choice for outsourcing custom machined parts and precision machining services. We provide more than 100 different types of materials and surface finishes with experience in a seamless transition from prototype machining through production machining.

Cnc Milling

At the PTJ Shop, you will find the most powerful and innovative CNC-turning service available today, exactly the type you need for your production.

Cnc Turning

Milling is an indispensable service for industrial production, and our milling centers ensure higher technical standards. Therefore, the services of PTJ Shop increase your productivity.

Multi Axis Machining

PTJ offers services dedicated to 5-axis high-precision laser machining of turbine blades and aerospace and industrial gas turbine workpieces.

Swiss Type Automatic Lathe

PTJ has swiss type automatic lathe, which can simultaneously complete turning, milling, drilling, boring, tapping, engraving and other composite machining at the same time.

Get To Know Our Another Best Services to Help Your Problems.

Surface Finishing

Our more commonly used surface treatment methods include mechanical polishing, chemical treatment, surface heat treatment, and spraying the surface.


Our Clients Said

Delina Shmicell


The PTJ Hardware team is excellent to work with. They are very responsive and the quality of the parts we ordered is exceptional. We’ve been doing business with them for several years now and look forward to continue working with them.



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What Is CNC Machining


CNC machining refers to a process method for machining parts on CNC machine tools. The process specifications of CNC machine tools and traditional machine tools are generally consistent, but significant changes have also occurred. Machining method that uses digital information to control part and tool displacement. It is an effective way to solve the problems of variable part varieties, small batches, complex shapes, high precision, etc. and to achieve high efficiency and automatic machining.

  • 1. Select and determine the parts and content for CNC Machining;
  • 2. Process analysis of CNC machining of part drawings;
  • 3. Process design of numerical control processing;
  • 4. Mathematical processing of part drawings;
  • 5. Writing processing program list;
  • 6. Make the control medium according to the program list;
  • 7. program verification and modification;
  • 8. First trial processing and on-site problem handling;
  • 9. Shaping and archiving of CNC machining process files.

1.Dimensions should conform to the characteristics of CNC machining

In CNC programming, the size and position of all points, lines, and areas are based on the programming origin. Therefore, it is best to directly give the coordinate size on the part drawing, or try to quote the size with the same reference.

2.The conditions of geometric elements should be complete and accurate

In programming, the programmer must fully grasp the geometric element parameters that constitute the contour of the part and the relationship between the geometric elements. Because all geometric elements of the part outline are defined during automatic programming, the coordinates of each node must be calculated during manual programming. No matter what is ambiguous or uncertain, programming cannot be performed. However, due to inadequate consideration or neglect during the design process, part designers often have incomplete or unclear parameters, such as whether arcs and lines, arcs and arcs are tangent or intersected or separated. Therefore, when reviewing and analyzing the drawings, you must be careful and contact the designer in time when problems are found.

3.Reliable positioning reference

In NC machining, the machining steps are often concentrated, and it is important to position with the same reference. Therefore, it is often necessary to set some auxiliary benchmarks or add some process bosses to the blank.

4.Uniform geometry type or size

It is best to use a uniform geometry type or size for the shape and inner cavity of the part. This can reduce the number of tool changes. It is also possible to use a control program or a special program to shorten the program length. The shape of the part is as symmetrical as possible, which is convenient for programming with the mirror machining function of the CNC machine tool to save programming time.


CNC machining is a subtractive manufacturing process that typically uses computer-controlled and high-speed rotating carbide tools to cut material from a stock (or workpiece) bit by bit and produce custom parts. This approach often replaces additive manufacturing processes (such as 3D printing) or molding manufacturing processes (such as liquid injection molding). The automated repeatability of CNC machining makes it easy to manufacture complex, high-precision parts that are inexpensive to produce in large quantities and used in large quantities for industrial production and machining.

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