API Spec 15LR pdf download.Specification for Low Pressure Fiberglass Line Pipe and Fittings 1 Scope 1.1 COVERAGE This speciÞcation covers Þlament wound (FW) and centrif- ugally cast (CC) Þberglass line pipe and Þttings for pipe in diameters up to and including 24 in. in diameter and up to and including 1000 psig cyclic operating pressures. In addition, at the manufacturerÕs...