What is sheet metal fabrication?

You may check the definition of sheet metal fabrication in google or some professional books, here the writer uses simple words to explain what sheet metal fabrication is?
People use machines to process the metal plate into a part or product, this is called sheet metal fabrication or sheet metal processing. Traditionally people think the thickness of the plate is under 6mm for sheet metal, but now the thickness is not limited to 6mm with the development of the modern sheet metal working machines. Generally, the processing procedures include laser cutting or/and punching, bending, welding, powder coating and assembling, and it may need more processing technologies according to different products, and the processing technologies mentioned here are the major processing technologies of sheet metal fabrication. Laser cutting or punching is the first step of sheet metal fabrication , and it means to cut the standard plate which is 3mx 1.5m or 4mx2m or 6mx2m or maybe bigger into a or a number of parts which are with the specific outer contour and usually with a or a number of holes as well ; After laser cutting , the next step is to bend in the specific position of the laser cutting part to make the part become a 3D shape part ; After bending, the next step is welding which means to make the different two or more parts be fused together ; After welding, the next step is to use the powder coating technology to add the coating on the surface of the part in order to protect or decorate the surface of the part; the last step is to assemble the parts together.
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