Maximum operating pressure exceeds one kilogram per square centimeter, and carcass diameter exceeding 500 mm, length exceeding 1000 mm, a pressure vessel.
Maximum operating pressure of more than one kilogram per square centimeter, and the carcass inside diameter of more than five hundred mm, length exceeding the first pressure vessel of one thousand mm.
The maximum use of pressure over per square centimeter one kilogram, and large intestine internal diameter of more than 500 decigram, length over 1000 decigram of the first pressure vessel. )