I was able to find 3'' SDR-35 ASTM D-2729 pipe, as well as 3'' SDR-35 ASTM D-3034 pipe; but I was not able to find 3'' ASTM D-3034 fittings. The S&D fittings seem to typicalle come with a disclaimer "3'' meets ASTM D2949 or exceeds ASTM D2729; 4'' and 6'' meet ASTM D3034". I understand that ASTM...