DONGGUAN TONJA INDUSTRIAL CO.LTD is a sheet metal processing enterprise that integrates design, development, production, and sales, specializing in the manufacturing of various Precision Sheet Metal parts.
TONJA has a high-quality technical team that can provide professional sheet metal solutions based on customer needs and drawings. 
TONJA has complete equipment, including laser cutting machines, turret punches, bending machines, welding machines, spray lines, etc., which can achieve a one-stop service from cutting, punching, bending, welding, surface treatment to assembly.
TONJA's products are widely used in industries such as electronics, communication, healthcare, automotive, and machinery, and have won unanimous praise from customers.

What are the three 3 types of metal fabrication?

1. Sheet Metal Fabrication: This involves bending thin strip steel or any flat metal sheet of any gauge or material to make some parts and structures. It involves their shaping, punching, cutting, bending, drilling and assembling and this is done using the shears, punch, die and the forming presses. Some of the widely used processes in creating sheet metal are sheet metal stamping, laser cutting, and TIG welding.
2. Welding: Welding is a technique where materials are bonded together using heat, direct or in-direct, where the base material is heated to the point where it attains its melting point so as to fuse it together or where pressure is applied to join the parts. The several welding techniques are the arc welding (MIG, TIG, MAG), oxyacetylene welding, gas tungsten arc welding (GTAW) welding, and spot welding. Welding is performed in varieties of fields encompassing construction of frameworks to automobile and aviation parts manufacturing.
3. Casting: This method entails placing a mold into an oven and then using molten metal to fill it to specific shapes thus forming the product. The casting can be done using any type of metal for instance; the iron, aluminum, bronze, steel or any other metal as per the need. The process can be subdivided into sand casting, investment casting (lost-wax casting), die casting or, continuously casting based on type of mold used and size and intricacy of the part to be produced. Automotive parts, machinery components or other related products such as beautification items are some of the products that incorporate castings.