Lead is poured into the joint between two ______________ pipes?
Correct answer: C. Cast iron
- A. Mild steel
- B. Concrete
- C. Cast iron
- D. Asbestos cement
Explanation
Lead is traditionally caulked into the socket joints of cast-iron pipes because it seals the joint while allowing slight movement. Mild-steel and concrete pipe joints generally use other joining or sealing methods.
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