Abstract
Twenty years have passed since first FRP composite cylinder appeared in commercial market. Standardization of composite cylinders has extensively advanced in many countries and related organization.
Design philosophy for composite cylinders is different from those for metallic cylinders. For example, service period and maximum number of filling cycles are specified at a limited level in order both to pursue light weight and to assure the safety at once. This report explains ondesign technique of FRP composite cylinders and some of related standards enacted in a number of countries.
