| Subject | English | Spanish |
| met. | blast furnace gas main | tubería del gas de horno alto |
| coal., met. | foul gas main | colector de gas |
| coal., met. | foul gas main | canal colector |
| coal., met. | foul gas main | barrilete |
| coal., met. | foul gas main | tubería de aspiración |
| coal., met. | gas collecting main | canal colector |
| coal., met. | gas collecting main | colector de gas |
| industr. | gas collecting main | barrilete |
| industr. | gas collecting main valve | válvula de barrilete |
| industr. | gas distribution main | tubería distribuidora de gas |
| met. | gas main | conducción principal de gas |
| earth.sc., transp. | gas main | canalización principal de gas |
| energ.ind., chem. | mains gas | gas de red |
| chem., el. | producer gas main | conducto de gas del gasógeno |
| industr. | rich gas heating mains | tuberías para gas rico de calefacción |
| industr. | rich gas main | tubería de gas rico |
| chem., el. | waste gas main | conducto de humos |
| chem., el. | waste gas main | colector de chimenea |
