Introductory summary
PDF file of my introduction to the National Shield Group
CURREGATED Polyethylene Corrugated Pipe Catalog
PDF file of high density polyethylene curregated pipes and accessories
UPVC Pipe Catalog
PDF file showing upvc pipes and fittings
PE pipe catalog
PDF file showing PE pipes and fittings
PPR tubes
A PDF file showing the PPR pipes produced by the National Shield Group.
