gaug - GTAW
- gauge manifold
- GD
- GDH flare knock out drum
- GDH flare pump
- GE
- general arrangement drawing
- general-purpose calculation
- general-purpose calculation block
- general-purpose calculation block with string I/O
- girder
- glass fabric
- glass trit
- glass-reinforced plastic
- glass-reinforced plastic tank
- global generic name
- globe valve
- GM
- GMS
- GO
- go/no-go determination
