IS 4984 (1995): high density polyethylene pipes for ...

10146: 1982 Polyethylene for its safe use in cou- tact with foodstuff, pharamceuti- cals and drinking water 3.2.1 Pipes shall be classitied according to the grade of materials as giveu iu Table 1. 3.2.2 The maximum allowable hydrostatic design stress (a) of a pipe is obtained by applying the design

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