Gas cylinders (ICS code(s): 23.020.35)

The draft of the Egyptian standard ES 780-4 for" Gas cylinders — Design, construction and testing of refillable seamless steel gas cylinders and tubes - Part: 4 Stainless steel cylinders with an Rm value of less than 1 100 MPa ".; (74 page(s), in Arabic)

The draft of the Egyptian standard specifies the minimum requirements for the materials, design, construction and workmanship, manufacturing processes, examinations and testing at time of manufacture for refillable, seamless, stainless steel gas cylinders with water capacities up to and including 150 l.

It is applicable to cylinders for compressed, liquefied and dissolved gases with a maximum actual tensile strength, Rma, of less than 1 100 MPa.

NOTE: If so desired, cylinders of water capacity between 150 l and 450 l can be manufactured to be in full conformance to this standard. Worth mentioning is that this draft standard is technically identical with ISO 9809-4/2026.