ONORM B 5158-2001 Plastics pipes made of polypropylene-random-copolymerisate (PP-R) with oval diameter,coated or uncoated, for low temperature radiant heating systems - Dimensions, requirements, tests, marking of conformity
2001ONORM B 5158-2001 Plastics pipes made of polypropylene-random-copolymerisate (PP-R) with oval diameter,coated or uncoated, for low temperature radiant heating systems - Dimensions, requirements, tests, marking of conformity