Galvanized Steel Pipe may realize its galvanized coating with hot dipped finish (Hot dipped galvanized steel tube) and Welded Steel Pipe with Galvanized coating (electro-galvanizing steel tube). Because its galvanized coating effectively protect steel pipe with resistance of rust and corrosion to maintain its application for long lifespan period.

Galvanized Steel Pipe vs. Black Coated Steel Pipe

Galvanized steel pipe features a protective zinc coating that helps prevent corrosion, rust, and the buildup of mineral deposits, thereby extending the pipe’s lifespan. Galvanized steel pipe is commonly used in plumbing and other water-supply applications.

Black coated steel pipe features an all-over black finish. Thanks to its high heat resistance, it is commonly used in fire sprinkler systems. Black steel pipe is also popular for other water transfer applications, including potable water and gas lines.

APPEARANCE OF HOT-DIP GALVANIZING AND COLD GALVANIZING

Cold galvanizing looks more smooth, bright, color passivation process plating layer is yellow-green in color, was colorful. Plating layer was bluish-white or white with white passivation process was green, white coating passivation process and the sun was significant Colorful angle. The complex workpiece angular edges parts prone to “electrical burning” from gloomy, the parts of the zinc layer thick. Yin corner site is easy to form a current dead undercurrent gray area and the area zinc layer is thinner. The workpiece overall zinc tumor, caking phenomenon.

Does galvanized steel contain lead?

In short, it is possible the plumbing can have lead contaminants in your water. The steel is layered in a Zinc compound to make it “galvanized”. This Zinc compound has been known to have some lead in it.

You can complete water testing to see if your water contains lead.