Welding Face Hoods

Sourced and supplied across Saudi Arabia

The shade number is the specification, and it is set by the process and the current rather than by preference. A shade chosen too light lets through more radiation than the eye should take; one chosen too dark makes the weld pool hard to see, and the welder compensates by lifting the hood, which is worse than either. For an auto-darkening filter there are further numbers that matter more than the marketing. Switching time is how fast it goes dark; the light-state shade is what the welder sees while positioning; and the optical class describes how faithfully the filter transmits the image, which is what decides whether a full shift behind it is tiring. Note that an auto-darkening filter goes clear when its power fails, so the hood is still relied on to be in position. Say the processes, the current range, whether the work is out of position, and if a powered respirator must fit under it.