DONGGUAN TONJA Industrial CO.LTD is a research institution dedicated to Sheet Metal Processing Technology. 
We have a professional research team and advanced experimental equipment, dedicated to exploring new methods and technologies for Sheet Metal Processing. 
TONJA sheet metal processing technology covers various methods such as riveting, spin riveting, and pull riveting, which can achieve efficient, high-quality, and high-precision processing of Sheet Metal Parts. At the same time, we optimize the structure and performance of sheet metal parts, improve their service life and reliability. 
TONJA sheet metal processing technology has been successfully applied in multiple fields such as aviation, aerospace, automotive, and construction, creating enormous value for customers.

What are the common Metal Parts?

In our daily lives, such as the metal plates,  metal tubes, metal bars, metal screws/bolts, metal springs, metal gears, metal housings, metal brackets, metal chains, metal fasteners are all common metal parts.

What are the different sizes and shapes of these Metal Parts?

Diversity of sizes and shapes of metal parts:Diversity of sizes and shapes of metal parts:
Sheet metal: Width, which varies from 0.04 to 0.6 meters; length ranging from 0.25 to 3 meters; and thin or flat and custom-made profiles.
Metal tubes: Variety of ID, OD, length, round or shaped.
Metal rods: Available in different sizes and Lengths, round or even any polygon shape.
Metal screws/bolts: The available threads in heads include: While fully threaded rod heads come in different sizes Full swarm thread; partial forming thread, and rolled thread.
Metal springs: If coils are expected to have different elasticity, the Coils size, and shape can be adjusted to suit the expected elasticity.
Metal gears: From the number of teeth, module, and other parameters they define the transmission characteristics while the shape depends on the functional layout.
Metal casing: Measures based on the internal area demand, diversified patterns for the purposes of adjusting the product configuration.
Metal bracket: As for the size and shape, they depend on the specific need of load bearing and structural stability.
Metal chain: It is associated with the fact that the length and the dimensions of chain links can be regarded as variable and identical to the traction demands.
Metal fasteners: It comes in different sizes and shapes to allow it fit in different tasks that involves fastening.
The difference in the dimensions of these metal sections makes them applicable in almost all engineering disciplines where the required structural and functional support is needed.