Control points for acceptance of raw materials and finished products on site
Control points for acceptance of raw materials and finished products on-site ① Steel: should be based on the design requirements to specify the choice of steel grade, reference standard number, chemical composition, and physical properties of the index. Raw material suppliers should provide a complete quality assurance certificate and material test reports. The varieties, specifications, and performance of steel and steel castings should be in line with the current national product standards and design requirements, and the quality of imported steel should be in line with the requirements of design and contractual standards. Supervision shall require the steel structure contractor to submit quality certification documents, Chinese marks, and inspection reports to the supervisor for review, and the supervising engineer shall check all of them. ② Welding materials: the varieties, specifications and performance of welding materials shall meet the current national product standards and des...