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Standard For Quality Inspection Of Galvanized Steel Sheet Jun 19, 2017

    Excellent grade galvanized sheet quality requirements include specifications size, surface, galvanized, chemical composition, plate shape, machine function and packaging and other aspects.

    1. Packing: divided into length into the length of galvanized sheet and roll galvanized sheet packaging two. General metal packaging, lined with moisture-proof paper, outside the iron waist tied, tied firmly, to prevent the galvanized sheet with each other friction. 2. Specifications Dimensions: The product scale (as described below) sets out the dimensions, length and width of the galvanized sheet and its tolerances. In addition, the width and length of the board, the width of the volume can also be determined by the user request. 3. Surface: Overview: galvanized sheet because the coating process in the disposal of different ways, the situation is also different, such as ordinary zinc flowers, fine zinc flowers, flat zinc flowers, zinc-free and phosphating treatment of the general situation. The galvanized sheet and the galvanized coil, which are cut into length, do not have the disadvantage of being used (see below), but the number of non-deformed parts of the coil is allowed to be welded. 4. Galvanized: galvanized scale value: galvanized zinc is the thickness of the galvanized sheet is a widely accepted useful method. Galvanized Steel Sheet

    There are two sides of the same amount of galvanized galvanized (ie, thick galvanized) and galvanized on both sides of the differences (ie, thick galvanized) two. The unit of galvanizing is g / m2.5. Machine function: (1) Tensile test: Generally speaking, as long as the layout with, stretching and deep drawing with galvanized sheet with a tensile machine can request. (2) bending experiment: is to weigh the important function of the plate name. Galvanized Steel Sheet

    But the scale of the country on the various types of galvanized sheet request is different. General request galvanized sheet bent 180o, the outside of the profile shall not have zinc layer to leave, the board must not have cracks and cracks. 6. Chemical composition: the requirements of the chemical composition of the galvanized substrate, the delineation of differences in the scale of the country. If Japan does not ask, the United States requests it. Generally not for product inspection. 7. Plate shape: trade-off plate black and white has two goals, namely flatness and sickle bend. The flatness of the plate and the maximum permissible value of the sickle bend must be specified. Galvanized Steel Sheet