Sanitary Fittings and Tubing for Food Processors
Table 3 describes industry standard finish numbers commonly used for food and dairy tubing. Table 3. Finish number and description for sanitary tubing. 1. Industrial (mill finish) 3. Sanitary (ID polished to #150 grit or 32 R a, OD mill finish. 5. Industrial (ID mill finish, OD polish to #150 grit or 32 R a.