GB/T 4985-2010 stipulates the method for measuring the penetration of petroleum wax. This method is suitable for all kinds of petroleum wax products. By standardizing the equipment parameters of the penetration meter, detailing the sample preparation steps, including heating, stirring, chilling down and other links, and clarifying the standard conditions in the measurement process, such as test temperature, needle and sample contact time, etc., it can accurately measure the penetration of petroleum wax, so as to effectively evaluate the performance of petroleum wax Hardness and consistency, providing a key basis for the selection of petroleum wax in production, quality control and different application scenarios.