felt occupation standard 2

- Jun 26, 2018-

6 Details of drawings and pictures are provided at the time of order

7 Samples of felt, filter, felt parts, oil seals, liners, felt and felt general samples are provided.

8 Instructions for permissible deviations

The density is above 0.30g/cm3

Thickness 1.5-2.5mm positive and negative deviation 20% first class

Positive and negative deviation 27% two

Thickness 2.6-25mm positive and negative deviation 11%-14% first class

Positive and negative deviation 15%-17% two and other products

The density is below 0.30g/cm3c

Thickness 1.5-2.5mm positive and negative deviation 25% first class

Positive and negative deviation 30% two

Thickness 2.6-25mm positive and negative deviation 11%-18% first class

Positive and negative deviation 15%-25% two and other products

9. the content of free sulfuric acid can be expressed according to the need of the implementation standards are based on the People's Republic of China textile industry.

Industrial felt FZ/T25001-92Z execution