1) Before the processing and manufacturing of steel members, the process and construction organization design shall be prepared, and in combination with the actual situation of the civil construction site, the process quality control shall be implemented in the manufacturing, and the quality assurance system shall be established.
2) The measuring instruments used in the construction of steel members must be verified by the legal unit of measurement and be manufactured within the validity period. The installation and acceptance (including the foundation construction unit) shall be unified with ruler.
3) In addition to the ex factory certificate, the selected steel shall be sampled for re inspection before blanking, and the materials that meet the quality standards required by the specification can be blanking.
4) Before the processing of steel members, physical and chemical analysis shall be carried out, and the detection of main control items and general items shall be strictly controlled in the stages of cutting, corrective forming, edge processing and hole making processing, and the deviation shall meet the requirements of GB50205-2001. It is necessary to lay out the detailed sample, and the blanking can be carried out only after the size is checked to be accurate. The automatic cutting machine shall be used for cutting during blanking. When the steel plate is more than 18mm thick, precision cutting should be adopted.
5) The groove and notch quality of welding components shall meet the relevant specifications.
6) It is not allowed to drill and weld the main components on site.
7) The steel, connecting materials and coating materials used for steel members shall have quality certificates and conform to the requirements of the design documents and the provisions of the current relevant national standards.