Product Name: Seamless Aluminum Cylinders Combination Cylinder Type: Pressurized Cylinder Special Cylinder Type: Number of Cylinders Double-Acting Cylinder Type: Common Cylinder Pressure Direction: Double-acting Cylinder Standard: Standard Power: Hydraulic Structure: Gas - Liquid Damping Cylinder Usage: Fire Extinguisher Material: Aluminum Product Description Features:1) One-piece made by more than 20 process including cool extrusion2) It is light, has no welding and can be reused3) Technique data:A) Service pressure: 13MPaB) Test pressure: 22MPaC) Blow / burst pressure: ≥ 32 MPa4) Used in medical, dives, fire fight, food and so on, especially fit for old men to breath oxygen5) Easy to take6) Common capacity: Less than 2, 000ml