Plumber Red Seal · Question
Which material is used for gas piping and is recognizable by its black colour?
Black iron pipe is a commonly used material for gas piping installations due to its strength and resistance to natural gas. It is typically identified by its bl
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Question: Which material is used for gas piping and is recognizable by its black colour?
Answer options:
- Galvanized iron ✅ Black iron
- Copper
- PVC
Correct answer: Black iron
Explanation: Black iron pipe is a commonly used material for gas piping installations due to its strength and resistance to natural gas. It is typically identified by its black colour.
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