That was the best material they had.
Lead water pipes.
Because that was the best material they had at that time.
Yes and it still widely used even today
At the time of the Roman Empire, the Romans used pipes made of lead, because it is a cheap metal that is easily worked into pipes, and which unlike iron doesn't rust. The Romans didn't worry about lead poisoning. Lead pipes continued to be used even into the mid 20th century, before we became more concerned about the danger of lead poisoning.
That was the best material they had.
Lead water pipes.
Iron replaced lead in water pipes.
That was the best material they had at that time.
Because that was the best material they had at that time.
Pure copper is too soft to be any use so an alloy of copper and iron (or a similar metal) would be used.
Yes and it still widely used even today
Plastic was not invented during that time period.
The Romans used the first basic pipes, aqueducts, baths and many other innovations in water usage.
Because they had no better materials at that time.
At the time of the Roman Empire, the Romans used pipes made of lead, because it is a cheap metal that is easily worked into pipes, and which unlike iron doesn't rust. The Romans didn't worry about lead poisoning. Lead pipes continued to be used even into the mid 20th century, before we became more concerned about the danger of lead poisoning.
They used a type of mold. The smaller pipes, such as for household use or public fountains were usually of lead. The larger pipes, such as those used for aqueducts, were made of ceramic. The workshop of the Tenth Legion was recently found in Israel with the remains of the ceramic pipes and the kilns used to fire them.