Timeline

1. Bolt balls and materials needed to manufacture bolt ball joints. Its varieties, specifications, performance, etc. should meet the national product standards and design requirements.Inspection method: Check the product's quality qualified documents, Chinese signs and inspection reports.2. The bolt…

Space frame structure is a common roof form for large opera houses, industrial factories, exhibition halls, amusement parks and other buildings. What are the characteristics of the space frame structure? 1. Space frame is a net structure composed of many steel bars. It is a higher statically indeter…