What is the shape tolerances of pipe piles? Shape tolerance is an index value measuring the accuracy of the shape. Compared other choices of piles, pipe piles are cheaper but still effective, that is the reason why pipe piles are popular. The calculation process of pipe piles is very complex and invloves all aspects, including earth state, engineers’ design level, clients’ requests and local landscapes. Therefore, a delicate and accurate mathematical model is essential while a good design team is a guarantee of quality.