oxygen cylinder made of high quality steel GB5099/ISO9809 standard Oxygen Cylinder 1.Manufacturer can supply both industrial gas and gas cylinders. 2.Products exoported to 100 countries. 3.Volume:1L-50L Our Seamless Steel Oxygen Cylinders are mainly produced conformity with Standard GB5099, ISO9809 and EN1964. The raw material is either Seamless Steel Pipe or Steel Billet. Seamless Steel Gas Cylinders can be widely used in many fields, such as industry, medical equipment, fire protection and scientific research, for storage and transport of permanent gases and high pressure liquefied gases, such as Oxygen Gas, Carbon Dioxide Gas, Argon Gas and many other pertinent Gases. High quality and low price will explore broader market for our Seamless Steel Gas Cylinders.