Welding
Page
Oxygen
(
Green)
Acetylene
(
Red)
Fuel Gases*
(
Red)
Flame and Oil
Resistant Tube
Flame and Oil
Resistant Cover
Twin-Line Welding (Grade R)
255
Yes
Yes
No
No
No
Twin-Line Welding (Grade RM)
256
Yes
Yes
No
No
Yes
Twin-Line Welding (Grade T)
257
Yes
Yes
Yes
Yes
Yes
Single Line Welding (Grade R)
259
Yes
Yes
No
No
No
Single Line Welding (Grade RM) 260
Yes
Yes
No
No
Yes
Single Line Welding (Grade T)
258
Yes
Yes
Yes
Yes
Yes
*
Fuel Gases are defined in RMA IP-7 welding hos­e standard. Flammable compressed gases commonly used in the welding
and cutting industry including, but not limited to, acetylene, hydrogen, methane/natural gas, LP gas, propylene and
methylacetylene propadiene stabilized.
RMA IP-7 and CGA E-1
Air & Multipurpose
General Purpose
Heavy Duty
Push-on
Chemical Transfer
Cleaning Equipment
Food
Transfer
Washdown
Marine
Material Handling
Abrasives
Bulk Transfer
Cement & Concrete
Mining
Petroleum
Aircraft Fueling
Dispensing
Dock
Transfer
Spray
Steam
Vacuum
LPG Delivery
Water
Discharge
Suction & Discharge
Washdown
Welding
Coupling Systems
Equipment
Appendix
254
Welding