Products Description Seamless steel cylinder adopt advanced equipment and technology comply withinternational standards, obtain certificates,and is widely used in various fields such as industry,laboratory research,medical treatment etc Cylinder Model Helium cylinder 232-50L Standard EN ISO 9809-1 Material 34CrMo4 Working Pressure 230Bar Length 1455mm Weight 54.5KG Out Diameter 232mm Remarks many other type seamless gas cylinder providing free sample to you