Do you know the inspection standard of color coated steel coil?

The inspection standard of color coated steel coil can be described in terms of specification, size, coating, surface inspection and label requirements.



01

Specification and size



The width error is +-2mm, the incision is straight, the section is neat, and the thickness tolerance is +-0.03mm.



02

coating



The coating type meets the contract requirements, the coating color is uniform, there is no obvious color difference, and the coating thickness meets the contract requirements.



03

Surface inspection



The coil surface shall be flat, without obvious concave convex, warping, deformation, clean surface, no oil stain, no bubble, shrinkage cavity, holiday coating and other defects harmful to the use. The defective part of the steel coil shall not exceed 5% of the total length of each coil, and there shall be no obvious scratches, bumps, scars.



04

Labeling requirements



The paper strip or other materials and products on the package must have the product name, specification, manufacturer and other contents, the packaging mark must be eye-catching, firm, legible, and annotated with the supplier's name or supplier's trademark, standard number, trademark, specification, weight, and the packaging mark must indicate the identification number that can trace from steel to smelting, and the quality certificate must indicate the supplier's name, contract number, product name, standard number, specification, trademark The identification number, weight, number of pieces, production date and delivery date that can track the steel from steel to smelting, and the mark must indicate the substrate coating weight, topcoat type, color and other contents.