Specifications include, but are not limited to: 1/2" CTS PE2708 GAS PIPING .090" WALL. TO BE SUPPLIED IN 1000 FT COILS. 1: *PIPE TO MEET OR EXCEED CELL CLASSIFICATION 234373E PER LATEST REVISION OF ASTM D3350. 2. MANUFACTURE DATE MUST BE NO MORE THAN 12 MONTHS OUT UPON DATE OF DELIVERY. 3. ALL PIPE TO MEET LATEST REVISION OF ASTM D2513, STANDARD SPECIFICATION FOR POLYETHYLENE (PE) GAS PRESSURE PIPE, TUBING, AND FITTINGS. 4. ALL PIPE MUST COMPLY WITH CODE OF FEDERAL REGULATIONS TITLE 49 PART 192 5. THE POLYETHYLENE SOURCE RESIN SHALL HAVE A PPI TR-4 INDEPENDENT LISTING, AND THE PIPE MANUFACTURER SHALL MAINTAIN A DEPENDENT LISTING, ALSO IN CONFORMANCE WITH PPI TR-4. 6. ALL PIPE SHALL BE SHIPPED WITH END CAPS TO PREVENT CONTAMINATION DURING SHIPPING AND STORAGE.