Hardware inspection standards Hardware refers to metal parts used in construction, machinery, automobiles, aerospace and other fields. Because of its wide application in various in...

The riveting welding flat plate/riveting welding platform is a basic cast iron flat plate widely used in the riveting welding process. It is used to fix the welding parts and preve...

Study document For reference only 1. Scope This standard is a general regulation for designers at all levels in the technical department during the process of designing and drawing...