淘宝图片搬家工具_jk黑色丝袜喷水视频国产_少妇爆乳无码专区网站免费_japan丰满成熟熟妇_欧美日韩第一区_亚洲中文精选人人免费_麻豆精品91福利在线_欧美成a人片免费看久久_国产精品污视频_欧洲三级无码中文字幕

In most cases, leveling is an expected performance of paintIt manifests in the dry film surface being as flat as possible and minimizing surface brush marks, spray points, and other unevenness.

 

Apply the tested paint to a flat substrate using leveling, producing 5 pairs of stripes with different film thicknesses.Maintain the horizontal position of the test board and observe which stripe is clustered together.Usually, when two stripes come together, there is a gap in the middle that is faintly visible, and the gap used at this position is the leveling position.

 

ASTM D 2801

 

 

Leveling Tester,Instructions