China is a big supplier of JIS G 3101 SS400 steel plates. Every day, there are tens of thousands of tons SS400 steel plates are delivered to the port and exported. It is easy to find that the most of SS400 steel plates are supplied with sand blasting and shop primer. What is the role of sand blasting and shop primer playing in JIS G 3101 SS400 steel plates?
It is not hard to understand that shop primer has the effect of protecting JIS G 3101 SS400 steel plates from rusting during transportation on the sea. The primer thickness are usually around 20 micron. The sand blasting treatment makes the surface of JIS G 3101 SS400 steel plates up to a certain degree of roughness, so that the adhesion of paint film or shop primer is improved.
Therefore, for JIS G 3101 SS400 steel plates need to transport for some time, both the clients and supplier prefer to make sand blasting and shop primer.
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