... resistant,weather resistant and zone resistant,it's of pressure bearable,flexible,light in weight. Nice smooth surface ... Widely used for conveying of air, inert gas for welding and cutting etc.Tube: NR & SBR synthetic rubber ... resistant, weather resistant and zone resistant. It's of pressure bearable, flexible, light in weight, anti-bending, less ... ( Remark: 1Mpa=10bar ≈ 10kg ≈ 143PSI) rubber welding hose