What is the Difference Between Black Pipe and Galvanized Pipe?

The main difference between black pipe and galvanized pipe lies in their composition, appearance, and intended applications. Here are the key differences:

1. Composition: Both black and galvanized pipes are made of steel, but galvanized pipes are coated with zinc to provide additional protection against corrosion, while black pipes are uncoated.
2. Appearance: Black pipes are darker in color due to the iron oxide formed on their surface during manufacturing, while galvanized pipes have a silver-gray appearance.
3. Corrosion Resistance: Galvanized pipes have better corrosion resistance due to their zinc coating, making them more durable and more expensive than black pipes.
4. Intended Applications: Galvanized pipes are typically used for water transportation, as they are safer and more resistant to corrosion, while black pipes are primarily used for gas lines and fire sprinkler systems.

In summary, galvanized pipes are coated with zinc, are more expensive and corrosion-resistant, and are typically used for water transportation, while black pipes are uncoated and primarily used for gas lines and fire sprinkler systems.

Comparative Table: Black Pipe vs Galvanized Pipe

Here is a table comparing the differences between black pipe and galvanized pipe:

In summary, black pipes are made of steel without a zinc coating and are typically used for gas lines, oil lines, and steam lines, while galvanized pipes are made of steel with a zinc coating and are commonly used for water transportation and plumbing systems.