For the layman to identify true and false paint, using the following three methods, it does not require much professional knowledge and is very easy to learn.
The first trick to see the layered natural paint is naturally divided into three layers, the surface layer is soy sauce or pig liver color, the middle layer is light yellow, the bottom layer is gray white; if the paint is a color, it must be fake paint .
The second measure, see if there are few impurities in the paint paint, milky white line when stirring, then the paint quality is good.
The third measure, the smell of paint yellow, the bottom layer is gray and white paint has an aromatic or acid flavor, if there is corruption or other strange taste, it is deteriorating paint or fake paint. Long-lasting paint, good condition is bad paint.
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The simple trolley is a special equipment that must be used in the secondary lining of the tunnel construction process, and is used for the concrete lining construction of the inner wall of the tunnel loop. Lining trolleys are non-standard products that are indispensable for secondary lining during tunnel construction. They mainly include simple lining trolleys, fully hydraulic automatic lining trolleys and grid-frame lining trolleys. Full hydraulic lining trolley can be divided into side-top arch type, full circle needle beam type, bottom mold needle beam type, full circle travel type, etc. In the construction of hydraulic tunnels and bridges, lifting slipforms, jacking slipforms and turning forms are also commonly used.
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