Cause 1:

 Acetylene bottles with packing and solvent (acetone), lying down when used, acetone is easy to flow out with acetylene, not only increase the consumption of acetone, but also reduce the combustion temperature and affect the use, at the same time will produce temper and cause acetylene bottle explosion accident.

Cause 2:

 Acetylene bottle lying, easy to roll, bottles and bottles, bottles and other objects are easy to be hit, the formation of excitation energy, leading to the occurrence of acetylene bottle accident.

Reason 3: 

Acetylene bottle is equipped with shockproof apron, its purpose is to prevent the loading and unloading, transportation, use of collision. The rubber ring is insulation material, lying is equal to acetylene bottle on the electric insulator, resulting in the static electricity generated on the cylinder can not spread to the earth, gather on the bottle body, easy to produce electrostatic spark, when acetylene gas leakage, easy to cause combustion and explosion accidents.

Cause 4:

When using the acetylene bottle valve is equipped with a pressure reducer, flame arrester, connected with rubber hose, because of lying down easy to roll, rolling easy to damage the pressure reducer, flame arrester or pull the degluing pipe, resulting in acetylene gas leakage, resulting in combustion explosion.

For these reasons, acetylene bottles must be stored upright.