GB/T 4857.22 - 1998 provides a test method for the unit cargo Stability in Encasement transportation Encasement parts. The standard elaborates on the preparation for the test, including the stacking method of the goods, the fixing requirements, etc., specifies the specific operation steps and parameter settings such as tilt test, swirl/spin test, etc., and also clarifies the result judgment criteria. Unit cargo Stability is related to transportation safety and cargo integrity. This standard provides a unified test specification for Encasement enterprises and the logistics industry, helps to optimize the design of Encasement, ensures the stability of goods during transportation, and promotes the standardization development of the Encasement transportation industry.