Zone ⅲ being a stable zone will have a stable state of bottom plates and a constant volume increment and it is required to carry out a strapping table correction for real tank volume to replace the invalidated strapping table for empty tank .

第Ⅲ区为稳定区，罐底板总体处于稳定状态，增量保持恒定，空罐 容积表不再适用，必须进行实 罐容积表修正。