Based on the dimensions in the construction drawings and site conditions, various pipes and fittings are prefabricated and modularized. The prefabrication process includes: 1. Drawing breakdown, drawing, and dimension confirmation; 2. Pipe material preparation and confirmation; 3. Hole drilling and pipe cutting; 4. Pipe coding, assembly, and welding; 5. Weld inspection (our company conducts first-level inspection); 6. Finished product assembly and delivery, coordinating on-site hoisting.