... , only one-eighth of steel pipe, Through activities flange bolts to connect, installation and dismantle, transportation are convenient, shorten the time ... of area, can be connected directly, it does not need to repair ground of surface. • HDPE Sand Delivery Pipe has good ... %, temperature is used at - 40-60 ° c, can adapt to bad weather changes in temperature. • HDPE Sand Delivery Pipe is either ...