NS EN 12257 : 1ED 2002

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Design and manufacture
5 Cylinder and material tests
6 Conformity evaluation
7 Marking
Annex A (normative) Prototype testing, design variant
         testing and production testing
Annex B (informative) Examples of type approval and
         production testing certificates
Bibliography

Covers minimum requirements for the materials, design, construction, prototype testing and routine manufacturing inspections of composite gas cylinders with a water capacity up to and including 450 litres for compressed, liquefied and dissolved gases.