Basic requirements: the head of our existing standards, is by structure type (oval, dish, cone), forming methods (stamping, spinning) different, and were developed, which not only result in different quality standards Head requirements are not exactly the same anomaly, but also to the head of the selection criteria, the revised standard has brought some difficulties. First, the previous head standards are only GB150 "steel pressure vessel" complementary, that only considered the manufacturer according to the rules of the head of design, testing and inspection requirements, and China as early as in 1995 and completed GB150 JB4732 pressure vessel based on the standard two-tier (and the "steel pressure vessel analysis and design standards"), the lack of analysis and design phase matching head standard, say that it is a major shortcoming of the standardization work of the pressure vessel. Second, GB150 is a mandatory standard, prepared in accordance with GB150 and accompanying standard head is guiding (recommended) in nature, which is obviously unreasonable, it is difficult to ensure the quality of this important head pressure components .