API Spec 15LR pdf download Specification for Low Pressure Fiberglass Line Pipe 5 Physical Properties and Tests 5.1 PHYSICAL PROPERTIES Pipe furnished to this speciÞcation shall conform to physi- cal property requirements in 5.3. Certain other properties do not have speciÞed requirements but are nevertheless impor- tant in piping system design. The manufacturer shall perform the tests shown in 5.1a-5.1h...