The specifications for sheet metal engineering drawings cover product structure, processing information, special structures, hardware components and technical requirements. Drawing requirements include internal bores, burr direction and the dimensioning of hardware components. The reference drawings for hardware components and formed parts specify the dimensioning methods for various components and the requirements for sectional views.

Detailed Explanation of Control Requirements for Sheet Metal Engineering Drawings 1 Ensure that the drawings fully reflect the product’s structure, including views from all angles, detail views and sectional views. 2 Clearly annotate key processing information for the product, such as the name, customer drawing number, revision, material and material thickness.