Oct 03, 2014 · SDR 26 and SDR 35 MANUFACTURER'S CERTIFICATION This is to certify the pipe manufactured by Sanderson Pipe Corporation meets or exceeds the applicable engineering standards listed under ASTM D3034. 1. Materials: Comply with ASTM D1784 standard, cell classification 12454 or 12364. 2.
Dimensional Ratio (SDR) wall thickness in standard IPS sizes. Available pressure ratings range from 50 psi (SDR-32.5) to 255 psi (SDR-7.3) at 73°F, with operat-ing temperatures from -50°F and lower, to +140°F by applying an appropriate design factor. INSULATION Insulation of the service pipe shall be rigid polyurethane