This International Standard specifies two methods for assess-ing whether a rubber or plastics hose retains adequate flexibility at sub-ambient temperatures.
Method A is applicable to non-collapsible hose with a bore size up to and including 25 mm. It measures the increase in stiffness compared to the flexibility at a standard laboratory tempera-ture.
Method B is a simpler, qualitative method suitable for control testing and is applicable to hose with a bore size up to and including 100 mm.
IS 12657-1989 history
1989IS 12657-1989 Rubber and Plastic Hoses—Flexibility Testing at Subambient Temperatures