Root gases
Root Gas 96/4
Root Gas 96/4 is a nitrogen–hydrogen mixture used to protect the weld root. The reducing effect of hydrogen prevents oxidation (discolouration) on the back of the weld. It is used for back-purging, particularly on stainless pipe and tank welding.
Cylinder volume and filling pressure vary by application. Tell us what you need and we will determine the right class and size together.
Technical data
Composition
- Nitrogen (N₂) %96
- Hydrogen (H₂) %4
| Product family | Root gases |
|---|
Applications
- Weld root protection (purging)
- Protecting pipe and tank interiors from oxidation
- Back-purging on stainless pipework