? application: used f metal welding, cutting other similar operations, delivery gases such as air, oxygen, acetylene, propane, butane, carbon dioxide liquefied gas, etc.

? technical deion:

tube: black smooth synthetic rubber;

reinfcement : high tension textile yarn;

cover: smooth fluted cover synthetic rubber, wear resistance, ageing resistance, heat resistance, oil resistance.

? temperature range: -20℃ to +70℃

? stards: iso3821