Common sizes for manhole mold: inner diameter 100cm, outer diameter 120cm; inner diameter 100cm, outer diameter 140cm; inner diameter 125cm, outer diameter 165cm; inner diameter 150cm, outer diameter 190cm, custom sizes available. Manhole molds play a significant role in urban pipeline renovations, including drainage, water supply, cable, gas, and telecommunication pipelines, with very standardized models and specifications, offering more advantages than brick or plastic wells. Manhole molds: They come in a wide range, including square, rectangular, round, and elliptical shapes, with sizes ranging from φ700 to φ1500. They consist of the well chamber and the base, making installation quite convenient.