The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle is
A. steel
B. cast iron
C. copper
D. reinforced cement concrete
Answer:B
The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle is
A. steel B. cast iron C. copper D. reinforced cement concrete