Product Name: Seamless Steel Gas CylindersPlace of Origin: ChinaOur seamless steel gas cylinders are ideal for holding permanent gases and high pressure liquefied gases such as oxygen, hydrogen, argon and carbon dioxide. The majority of the gas cylinder is made of high-quality alloy steel material. They are widely applied in the chemical, metallurgical, mechanical, medical, scientific research and construction industries. Specifications: 1) Material: 34Mn2V, 30CrMo, 34CrMo4 2) Outside diameter: 219-279mm 3) Water capacity: 20-90L