Indian doll 0.25 kg PKL colorful

Description / PKL Indian refillable gas cylinder 0.25 kilogram Indian industry pkl company holder of the Saudi quality mark (G) what is the thickness of the metal from which the cylinder is made 1.45 mm for the 0.25 kg cylinder what is the welding method a mixture of copper and bronze in a continuous thermal oven with a protective atmosphere what is the type of safety valve in the cylinder in case of explosion the safety release valve with automatic closure opens between 22-30 bar and closes when it is above 20 bar