Gas cylinders are varieties within the range of pressure vessels.
Special Equipment Safety Law
Article 2 The production (including design, manufacture, installation, transformation, repair), operation, use, inspection, testing and supervision and management of the safety of special equipment shall be governed by this Law.
Special equipment referred to in this Law, refers to the greater danger to personal and property safety of boilers, pressure vessels (including cylinders), pressure pipelines, elevators, lifting machinery, passenger ropeways, large-scale amusement rides, the field (plant) special motor vehicles, as well as laws and administrative regulations applicable to the Law of other special equipment.
The state of special equipment to implement catalog management. Special equipment catalog by the State Council is responsible for the supervision and management of special equipment safety departments to develop, reported to the State Council for approval and implementation.
Special Equipment Catalog (No. 114 of 2014)
Pressure Vessel:
Pressure Vessel, refers to the gas or liquid, carrying a certain pressure of the closed equipment, the scope of which is defined as the maximum working pressure of greater than or equal to 0.1MPa (gauge pressure) of gases, liquefied gases and liquids with a maximum working temperature higher than or equal to the standard boiling point. Volume greater than or equal to 30L and internal diameter (non-circular cross-section refers to the maximum geometric size of the inner boundary of the cross-section) greater than or equal to 150mm of fixed containers and mobile containers; filled with a nominal working pressure greater than or equal to 0.2MPa (gauge pressure), and the product of the pressure and volume is greater than or equal to 1.0MPa?L of gases, liquefied gases and the standard boiling point of equal to or lower than 60 ℃ Liquid cylinders; oxygen tanks.