Family decoration used for gypsum board, generally used in the decoration of the ceiling or partition, is building gypsum as main raw material, and adding appropriate additives made of fiber and core board. Paper faced gypsum board has the characteristics of fire prevention, sound insulation, light weight, high strength and small shrinkage rate. We should learn to identify the quality of it:
1.Visual: visual inspection should be at a distance of 0.5m bright light conditions. Then look at the side, the gypsum texture is dense, no hollowing or not?
2.Strike by hand: check the elasticity of the plasterboard.
3.Dimension allowable deviation, flatness and right angle deviation degree.
4.Look at the sign. When buying, we should focus on the quality grade mark.
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