A cylinder

This invention relates to the assembly of pressure cylinders used for the transportation and storage of liquefied petroleum gas or other hydrocarbons. The cylinder of the present invention comprises, fundamentally, a body inside which especially liquefied petroleum gas is carried and stored, and which is manufact ured of a composite material; a regulator for the gas to exit; a valve; a handle which enables it to be carried easily by the user; a lid placed on the handle; a base which enables its standing in balance; at least one central piece which connects the handle and the base around the composite body in order to fix them on the cylinder, gives an aesthetic appearance to the transparent body and has the optimum surface area to enable easy evaporation of the gas inside the cylinder; and characterised by pawls placed on the upper and lower sides of the central piece and have a form to be able to locked into the corresponding pockets on the handle and the base, are preferably in the form of a semi-arrow and are sufficient in numbers to provide sufficient strength so as to allow mechanical assembly.