Galvanized pipe will be silver/gray color. Copper will be copper. Use a magnet, it'll stick to galvanized pipe but not to copper. Drinking water lines should not be black steel pipe.
Copper can leach into water from corroded pipes or plumbing fixtures, especially in homes with copper pipes. Elevated levels of copper in drinking water can lead to health risks, such as gastrointestinal distress or liver and kidney damage. It is essential to monitor and address copper contamination in water sources to ensure safe drinking water.
Copper is used as hot water pipes because the copper will not corrode when the hot water goes through the pipes
I can't think you are talking drinking water pipes because anitfreeze is poisonous. Nor should you have lead pipes or lead solder in drinking water pipes. So either sleeve pipes or heating pipes then. Antifreeze has inhibitors designed to prevent corrosion.
Copper is used as hot water pipes because the copper will not corrode when the hot water goes through the pipes
No! Steel is a very bad choice for plumbing, as it rusts and can poison your water. PVC, copper, or clay pipes are recommended for plumbing.
Copper and stainless steel are commonly used for water pipes because they do not react with water, helping to prevent corrosion and contamination of the water supply.
Pipes made from certain materials, such as lead, polyvinyl chloride (PVC) with unapproved additives, and galvanized steel, are not suitable for drinking water conveyance. Lead pipes can leach harmful levels of lead into the water, posing serious health risks. PVC pipes, if not specifically designated for potable water, may contain harmful chemicals that can contaminate drinking water. Additionally, galvanized steel can corrode and release rust and heavy metals into the water supply.
Copper pipes are now most commonly used in plumbing. Lead pipes were used long ago, and the word plumbing is derived from the Latin word for lead (plumbum). Iron pipes were used until relatively inexpensive copper pipes became readily available during the twentieth century.
Copper pipes are perfectly safe. If you were to consume too much copper you could then suffer from copper toxicity, however metallic copper is not very soluble in water, and you will not get any excessive amount being dissolved by using copper pipes. Also note that in very small amounts, copper is actually beneficial, since it is a necessary trace element. So copper pipes are good. Or what I was told is that the Romans drank out of copper pipes and they all went mad but that's what i heard.
Copper
Copper, Brass, Yellow Brass , Red Brass, Galvainzed steel, Galvanized wrought , Yalloy
Copper