What is the difference between different types of stainless steel
plates 1. To identify imported stainless steel or ordered by a steel mill, it is generally only necessary to check the marks on the steel or packaging according to the quality certificate of the import or steel mill. The quality certificate is the supplier's confirmation and guarantee of the inspection results of the batch of products. Therefore, the quality certificate not only states the name, specification, number of delivered pieces, weight and delivery status of the material, but also must state all the inspection results of the specified guarantee items. Similarly, in order to facilitate management, avoid confusion and prevent use accidents caused by confusion, the manufacturer marks the brand, batch number, state, specification, quantity and manufacturer code on the material or packaging. The marked mark should be consistent with the content of the quality certificate. Commonly used marking methods mainly include the following three: coloring (painting the color indicating the grade on the specified part of the material), printing (stenciling or spray printing on the specified part of the material to indicate the grade, specification, furnace tank number, etc. of the material) , commonly used on thick steel plates or large and medium-sized steel), listing (on the materials in bundles or boxes, hanging signs indicating the grade, batch number, specification, quantity, etc.). The signs of stainless steel are generally printed and listed. 2. The society has overstocked stainless steel. According to the length of the overstocking time and the quality of storage, there are generally two situations: First, the overstocking time is not long and the storage is good. The processing unit not only keeps the original quality certificate or copy, but also the steel or packaging. The signs are complete and clear. For the identification of this kind of stainless steel, it is only necessary to check the marks on the steel or the packaging according to the quality certificate. The other is that the backlog is long, the storage is not perfect, there is no quality certificate, and the marks on the steel or packaging are not obvious or fall off. For the identification of this type of stainless steel, it is mainly necessary to conduct in-depth investigation and research, and consult the original documents from the processing unit. Generally speaking, the original documents such as invoices are marked with the steel number, etc. If there is no steel number recorded, it is also necessary to consult the local price information at that time to determine the steel number based on the price. This is a more effective method to determine the steel number, but it is often easy to be overwhelmed. Therefore, it is necessary to master the identification method of the real object
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