Lesson Summary
• Black steel and galvanized pipes are the two types of carbon steel pipes used in plumbing. The latter is electroplated with molten zinc, which protects the pipe surface from abrasive, corrosive materials.

• Carbon steel pipes are typically manufactured with threads on both ends.

• The pipe fittings for steel pipes are generally made of malleable iron or cast iron.

• Pressure fittings and drainage fittings are the two types of iron pipe fittings that are manufactured. Tees, elbows, and unions are the pressure fittings used for threaded pipes.