PURPOSE This specification was formulated to provide for the availability of safe@ dimensionally and functionally interchangeable high pressure fiberglass line pipe with a Specification 15HR Standard Pressure Rating from 500 lbf/in2 to 5000 lbf/in2@ inclusive@ in 250 lbf/in2 increments. This specification is limited to mechanical connections. Technical content provides requirements for performance@ design@ materials@ tests and inspection@ marking@ handling@ storing and shipping. Critical components are items of equipment having requirements specified in this document.