Industrial rubber sheets are widely used in substations, power plants, distribution rooms, laboratories and field live work. They are mainly made of rubber insulating materials. There should be no harmful irregularities on the upper and lower surfaces of insulating pads. It is widely used in substations, power plants, distribution rooms, laboratories and field live work. It is mainly made of rubber insulating materials. 

There should be no harmful irregularities on the upper and lower surfaces of insulating pads. Harmful irregularity refers to one of the following characteristics, i.e. the defects that destroy uniformity and smooth surface profile, such as small holes, cracks, local uplifts, notches, inclusions of conductive foreign bodies, folds, voids, concave-convex corrugates and casting marks. Harmless irregularity refers to the surface irregularity formed in the production process.

There should be no harmful irregularity on the upper and lower surfaces of insulating pads. Harmful irregularity refers to one of the following characteristics, i.e. the defects that destroy uniformity and smooth surface profile, such as small holes, cracks, local uplifts, notches, inclusions of conductive foreign bodies, folds, voids, concave-convex corrugates and casting marks. Harmless irregularity refers to the surface irregularity formed in the production process.