2006UNE-EN 13322-2:2003/A1:2006 Transportable gas cylinders - Refillable welded steel gas cylinders - Design and construction - Part 2: Stainless steel
2003UNE-EN 13322-2:2003 Transportable gas cylinders - Reffilable welded steel gas cylinders - Design and construction - Part 2: Stainless steel