B-- This standard establishes the external diameters of plastic tubes with a circular section, regardless of their method of manufacture, composition and use. It also establishes the nominal pressures for tubes intended for the transport of fluids and the way to calculate wall thicknesses. BS This standard is intended to serve as a guide for manufacturers and users and as a basis for particular standards relating to a given material or a defined application. B-3 This standard is not applicable to plastic tubes used in the electrical industry
IRAM 13 349-1963 history
1944IRAM 13 349-1963 Plastic conduit dimensions and standard pressure values