The heat resistance of the pipe body of the cement pipe is very good, together with certain fire and flame retardant properties. The cement pipe is generally used in underground cable maintenance pipes, underground optical cable maintenance pipes, and irrigation pipes. It can also be used for groundwater and gas. discharge. General cement pipes are large-diameter cement pipes. With the same caliber, the wall thickness of steel pipes is difficult to guarantee the certain economy. However, most of the cement pipes are buried underground, so that the corrosion resistance of the cement pipes will be relatively stable. There are some complicated drainage conditions in urban drainage, and cement pipes can corrode most materials.
The hours and minutes of operation are based on the midline control points once planned, and then the starting point, end, plane, and vertices are measured at the site. Set a point at the center with a stake mark, and set the direction control at the measurement point The pile is measured by measuring the pile number together. This is the method for measuring the center line of the cement pipe.