Technical requirements for galvanized h-shaped steel

Technical requirements for galvanized h-shaped steel

1. The adhesion of zinc to galvanized H-shaped steel in steel structure engineering:

The zinc adhesion of galvanized H-shaped steel should not be less than 610g/m2, and the average thickness of the zinc layer should not be less than 86um. The thickness of the local zinc layer should not be less than 80um. Method of detection: First, take the two ends and three places in the middle to check the appearance for conformity. For a new rectangle with an area of 1 square centimeter, the surface of the rectangle is basically the measurement surface, and the measurement between each basic measurement surface requires five points. The arithmetic mean of these points should be taken as the main thickness of the local area.

2. Adhesion requirements for the galvanized layer of galvanized H-shaped steel in steel structure engineering:

The adhesion layer should be firmly bonded to the metal substrate and ensure that there is no detachment or wave formation. The testing method should be in accordance with the provisions of GB/T13912 and GB/T2694-2003, and the main test method is to conduct hammering and other tests. The zinc layer will not protrude or peel off, and will undergo pure bending and torsion tests to ensure that the zinc layer does not protrude, And there will be no peeling phenomenon

Technical requirements for the uniformity of the galvanized layer of galvanized H-shaped steel in steel structure engineering:

The galvanized layer of galvanized H-shaped steel should be uniform, and the copper sulfate solution used should not leak iron after four times of etching. The test area should not be less than 100 square centimeters of the test plate.

When storing galvanized H-shaped steel in steel structure engineering, the following requirements are required:

The storage area for galvanized H-shaped steel should be flat and free of water accumulation. For steel structure engineering, galvanized H-shaped steel should be stored in zones according to type and model, and the bottom cushion of galvanized H-shaped steel should have sufficient support surface to prevent the support points from sinking and the chassis from tilting. The interlayer should be placed in a reversed manner, And when stacking the same galvanized H-shaped steel model, the support points in each layer of galvanized H-shaped steel should be on the same vertical line. Stacking should not exceed 5 layers, and a cushion layer should be set between layers to prevent damage or deformation of the galvanized H-shaped steel.