Reinforced concrete pipes are primarily circular in shape and come in various sizes based on their internal diameter. They are categorized into small, medium, and large diameter pipes, with the small diameter pipes having an internal diameter less than 40 cm, medium diameter pipes with an internal diameter of 40-140 cm, and large diameter pipes with an internal diameter greater than 1.4 meters.

Additionally, concrete pipes are further categorized into low-pressure and high-pressure pipes based on their water pressure resistance. These pressure pipes operate at working pressures of 0.4, 0.6, 0.8, 1.0, 1.2 MPa, etc. Reinforced concrete pipes of different sizes have varying working capacities; you can select according to your specific needs.