This specification covers polyamide (PA) butt fusion fittings for use with polyamide pipe (IPS and ISO) and tubing (CTS). This specification covers butt fusion fittings intended for use with polyamide pipe and tubing. Fittings covered by this specification are normally molded. Fittings may be machined from extruded or molded stock. Conditioning, dimensions and tolerances, short-term rupture strength, sustained pressure test, and minimum hydrostatic burst pressure test shall be performed to conform with the requirements specified.