/ pipe can be crafted with the following recipes

Autolearned
Player Recipe
Primary skill used: fabrication(4)
Required skills: N/A
Time to complete: 120 minutes
Tools required:
> 1 tool with chiseling quality of 3
> 1 tool with anvil quality of 3
> 1 tool with hammering quality of 3
> swage and die set
> electric forge (40 charges) OR acetylene torch (40 charges) OR charcoal forge (40 charges)
> pair of metal tongs
Components required:
> 2x chunk of steel OR 10x scrap metal
Byproducts:
(none)

Cannot Be Memorized
NPC Recipe
Primary skill used: fabrication(4)
Required skills: N/A
Time to complete: 12 minutes
Tools required:
> 1 tool with anvil quality of 3
> 1 tool with hammering quality of 5
> 1 tool with chiseling quality of 3
> pair of metal tongs
> swage and die set
> electric forge (10 charges) OR acetylene torch (2 charges) OR charcoal forge (10 charges)
Components required:
> 7x scrap metal
Byproducts:
(none)