Specifies requirements for a method of manufacture of serially produced metallic and non-metallic unfired pressure vessels having a maximum volume of 150 L, and specified limits, related to the vessel contents, on the product of the design pressure and the total vapour space. For such vessels, this method of manufacture based on type testing provides an alternative to the method given in AS 1210, SAA Unfired Pressure Vessels Code. Burst tests and other performance tests on a significant number of representative samples are used to validate design, materials, and fabrication, all simultaneously.