I. Poor Bending Properties (T-bend): Characteristics: When the steel is bent 180 degrees, cracks and peeling occur in the coating of the processed area. Causes: 1. Excessive pre-treatment. 2. Coating is too thick. 3. Over-baking. 4. The base coat and top coat are from different manufacturers, or improper use of thinner. II. Poor Hardness (Pencil Hardness): Characteristics: When a drawing pencil is used to forcefully draw a line on the coating surface, after wiping, a scratch remains on the surface. Causes: 1. Low furnace temperature, insufficient coating curing. 2. Inappropriate heating conditions. 3. Coating thickness exceeds the specified thickness. III. Protrusion: Due to steel

Steel structures are not unfamiliar to us. With a little attention, you'll find steel structures everywhere in our daily lives. Let's take a detailed look at some specific applications of steel structures: 1. Steel Structure Entrance Halls: These are auxiliary halls often built as extensions to existing buildings or factories. These entrance halls are mostly designed using computers, have short construction periods, and relatively less work, resulting in faster installation. 2. Steel Structure Factories: The roofs and exterior walls of steel structure factories often adopt lightweight structures, usually using H-shaped steel for beams and columns,...