... ) Outside diameter: 159-279mm 3) Water capacity: 20-90L 4)Standard:GB5099,ISO9809 About Us | Tianen Your Position: >> About Us Zhejiang TianEn ... , seamless steel cylinders, Fire-fighting cylinders, Fully wrapped composite cylinders and other series. widely used for transportion , fire-fighting, medical treatment, industry and so on. Seamless Steel Gas ...