Available Sizes (HDPE) Available sizes of Large Dia HDPE DWC pipes Sizes OD/ID Length mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs. mm / mm 6 Mtrs.