Control the installation quality of the communication tower
Communication tower and fill out the packing list. 3 The title, number and weight of components and parts must be indicated on the packing box. In order to count on the spot. Data quality is the main part directly related to project quality. Information is the foundation of the tower project.
The contracting unit must fill out the application form for inspection, and when the materials are available. Attached to the quality confirmation sheet of steel and other materials, the experimental declaration is submitted to the supervision unit. Together with the establishment unit and contracting unit, the on-site materials are counted, and the supervision unit receives the inspection report. Reflect the size, variety, number, specifications and galvanized thickness of the appearance of the tower components, whether it meets the design requirements, the method of self-examination is mainly self-inspection, self-test, and sampling experiments in accordance with relevant national regulations.
1. Mobile communication tower data control
2. Welding rods must adopt E43 quality must comply with GB5118-85 rules, flux quality must comply with GB1308-85 rules; there must be prestige agency judgment confirmation, application clarification and inspection declaration; 2 if new information is used.
3. The number, weight and quality of components must meet the design requirements.
4. Regarding the components and steel materials, samples should be sent for inspection.
The steel must have a quality certificate, and the quality of the steel must conform to the GB700-88GB1591-94 and YB168-70 rules. It also conforms to the requirements of the design documents. If the supervision unit has doubts about the material, it must be sampled and checked according to the relevant national specifications.
If there is deformation, the size and specifications of the 5 components must meet the design requirements. Correction is necessary, and it is required that when the temperature is lower than -16 ℃, the component must not be cold corrected. If there are delamination or crack defects at the fracture, 6 the depth of rust, pitting or scratches on the surface of the steel material shall not be greater than half of the negative bias value of the steel thickness. The supervision unit will discuss and deal with the relevant units. The data and functional quality of the steel wire rope and steel stranded wire (pull wire) for the 7-pull tower of the communication tower must conform to the relevant national regulations and design documents.
