Steel at the core.
Experience in every detail.
Nearly 20 years of component machining experience. From bars and shafts to a wider range of steel parts, we review your drawings and work with you to find a suitable machining approach.
Discuss your requirements ↗
Know the company
behind the conversation.
RJ Machinery brings nearly 20 years of component machining experience, including high-precision work. Our work extends beyond bars and shafts to a wider range of steel components.
Pending: legal name · full street address · final company copyEquipment & working lengths

Specifics matter.
Let’s start with yours.
Steel components, to your drawings
Bars and shafts, including long shafts under 10 m; flanges, pistons, piston rods and nuts; gear hobbing; and components related to drilling oil pipes (exact terminology to be confirmed). These are examples, not a fixed catalog.
Carbon & alloy steels
Our machining materials include carbon steel and alloy steel. Other steel grades are considered according to the project requirements.
Have a different steel component in mind? Share your drawings and requirements. We review material, geometry, tolerances, surface finish and inspection needs to explore a suitable machining approach.
The work.
The place behind it.
A closer look at our equipment and the bars and shafts on our workshop floor. Photographed at RJ, supplied by our team.


What are you
working on?
Share your drawing, material grade, dimensions, quantity and tolerance requirements for a project-specific review.
Sales contact details pending verification
Ningbo, China
Close to Beilun Port, with convenient access for export shipping arrangements.
Demo form only. No information is sent or stored.