Material requirements for the base plate of the sign post

     Material requirements for the base plate of the sign post:

     1. The material used for the bottom plate of the signboard is 3mm thick aluminum alloy plate, relevant requirements of T6892 and JT / T279.

     2. The edges and included angles of the bottom plate of the signs shall be properly chamfered, round and smooth, and there shall be no burrs on the edges.

     3. The size of the sign board, the general size deviation is ± 5mm, if the external size is greater than 1.2m, the deviation is ± 0.5% of the external size, and the adjacent angle deviation is 0.5 °.

     4. The sign board should be flat, without obvious wrinkles, dents or deformation on the surface, and the flatness tolerance of the sign board per square meter should not be greater than 1.0mm.

     5. The sign board is not allowed to have cracks, obvious scratches, damage, and uneven color; on any surface with an area of 50 × 50 square centimeters. One or more bubbles with a total area greater than 10 square millimeters are not allowed, and uneven reflection performance is not allowed.