This standard applies to the fitting of PEM and PEH manufactured in such small quantities that they cannot be considered og iginating from current production, or PEM and PEH fittings which have not been subjected to the internal production control as specified in DS 2131.2, clause 7. The field of application of fittings according to this standard corresponds to the field of application specified in DS 2132.2. With the execption of inspection and marking, the requirements for materials .....