Good levels of galvanized sheet quality request contains specifications, galvanized, chemical composition, size, surface flatness, machine function and packing and so on several aspects.
1. Packing Divided into cut into specified length of galvanized sheet and coil galvanized sheet packing two kinds.General sheet metal packaging, lined with waterproof paper, outside with the iron kidneys attached, attached firmly, in case of built-in galvanized sheet friction with each other. 2. The size Relevant product scale, such as the following and all listed galvanized sheet thickness, length and width of the scale of the Lord and allow.Other, plate width and length, the width of the roll according to the request of users can also be determined. 3. The surface General situation: galvanized sheet for disposal method in plating process differences, general situation and differences, such as ordinary zinc flowers, flat zinc, zinc flowers and overview of phosphating treatment, zinc, etc.Cut into specified length of galvanized sheet and galvanized coils shall not affect using flawed (state), but not allow of rolled plate welding parts and so on many deformity department. 4. The amount of galvanized Galvanized quantity scale value: galvanized quantity is implying galvanized zinc layer thickness of a useful way to widely adopted.There are two sides to galvanized quantity (i.e., the same thickness of galvanized) and two galvanized quantity differences (i.e., poor thick galvanized) two kinds.Galvanized quantity unit of g/m2. 5. The machine function Tensile experiments: (1) generally speaking, as long as the layout, stretching and deep drawing with galvanized sheet tensile function request. (2) the bending experiment: is one of the important items balance sheet process function.But the nations scale is different to a request for all kinds of galvanized sheet, etc.General request galvanized sheet bending after 180 o, the lateral profile leave, can not have zinc layer plate base can not have crack and fracture. 6. Chemical composition Request for the chemical composition of galvanized substrate, delimit the nations scale differences.Such as Japan don't request, the United States request.Generally does not make the products inspection. 7. Strip shape Weigh the strip shape black and white has two goals, namely, straightness and rocker.The straightness and rocker maximum permissible value of the dimension must be defined.