Stringent corporate standards require the use of high-quality steel plates produced by domestic steel mills as raw materials for production. The assembly precision must comply with the national standard "Code for Construction and Acceptance of Steel Structure Engineering" (GBJ50205-2001). The welding procedure qualification should conform to the "Specification for Welding of Steel Structures in Buildings" (GBJ81-2001). The dimensional appearance of welds must meet the requirements of "Dimensional Appearance of Steel Structure Welds" (GB10854-89). Ultrasonic testing for welds is performed in accordance with "Method for Manual Ultrasonic Testing and Classification of Testing Results for Steel Welds" (GB11345-89). Deviations after steel structure rectification must adhere to the "Code for Construction and Acceptance of Steel Structure Engineering." For finished steel structure products and high-strength bolt friction surfaces, overall shot blasting is employed for rust removal, meeting the specified rust removal grade standards.
