Pressure: High Place of Origin: China Model Number: BW410 Material: Steel, Mn,CrMo,CrMo4,ST52 Brand Name: OEM Use: High Pressure Gas Outside Diameter: 83-356 mm Working pressure: 150-300 bar Test pressure: 225-451 bar Bottom type: Concave,Convex Design wall thickness: 2.1-9.7 mm Nominal water capacity: 0.8-140 L Cylinder height: 230-1770 mm Nominal weight: 1.4-183 kg Our daliy output: 4ton