1.sample fee free :oxygen hose, rubber hose, welding hose 2.W.P.:20bar 3.B.P.:60bar 4. ... :fresh rubber 1.sample fee free :oxygen hose, rubber hose, welding hose 2.W.P.:20bar 3.B.P.:60bar4.material ... . weather and ozone resistant 8.For transportation of welding gases, such as oxygen, acetylene, argon, etc.9.WORKING TEMPERATURE:-40°C up ...