China Seamless Steel Cylinder Fire fighting gas cylinders also use compressed air. The pressure resistance requirement is 300bar, and the equivalent limit pressure resistance is calculated by yourself. The high pressure resistance of fire cylinder is to store more air. 聽 Weifang Hengsheng Gas Co., Ltd. is a Gas and Gas Cylinder company integrating distribution, wholesale and commercial services. Our company mainly produces and sells various industrial Gas and Gas Cylinder: Oxygen, Nitrogen, Carbon Dioxide, Mixed gas, Argon, Neon, Krypton, Helium, Hydrogen, etc; Propane, Acetylene, Sulfur Hexafluoride, Ethane, Ethylene, Liquid Ammonia, etc; Seamless Steel Cylinder, Seamless Aluminum Cylinder, Insulated Dewar Cylinder, Disposable Helium Cylinder, Carbon Fiber Cylinder; LNG Cylinder, LPG Cylinder, Acetylene Cylinder, Liquid Ammonia Cylinder, etc. Our company has obtained ISO9001 quality management system certification, ISO45001 occupational health and safety management system certification, etc. We have professional production equipment and testing equipment. We attach great importance to quality management and occupational health. At the same time, we has obtained a number of invention patents, providing a solid backing for the company's technical development and protection. Welcome friends from all over the world to negotiate business, we will serve you wholeheartedly. 聽China Seamless Steel Cylinder website:http://www.cnhs.cc/seamless-steel-cylinder/