Packaging steel strip four prominent symbol of quality

Packaging steel strip quality stand or fall of four clearly marked: 1, packaging steel strip surface color and appearance quality, to put the portion of the packaging steel strip by monitoring platform, packaging steel strip with a meter long ruler on the concave side of mobile web site, measuring meter scale to the concave side of the maximum distance. 2, packaging steel strip thickness and galvanized coating thickness measuring instrument with accuracy of response measurement. The site measurement should be from the packaging steel strip edges is not less than 3 mm, roughly equal intervals, and the length of not less than 100 mm. All three measuring points on each side to baidu snapshot optimization website optimization, the arithmetic average of the six test values, or the thickness of the zinc coating is the coating thickness. 3, the test items of each batch packaging steel strip, sampling quantity, sampling methods and test methods should be consistent with the provisions of the state. 4, the tensile test sample shall be consistent with the provisions of GB/T6397 sample using without machining of rectangular cross section shape. The original cross-sectional area calculation according to the measured size.