High-Quality 1 1/2 Inch Galvanized Iron, 6 Meters Long G. I. Pipe

These pipes are widely used for conveying raw water & distribution of treated water in majority of rural water supply schemes, where the requirement of water is less. Mostly medium quality GI pipes are used. GI Pipes or Galvanized Iron Pipes are widely used for the purpose of co Thus, GI pipes are galvanized iron pipes, or called coated iron pipes in old terminology. GI carbon steel pipes are immersed in a galvanic (zinc) bath. GI (Galvanized Iron) Pipes are classified into 3 grades based on their weight per meter and inner diameter thickness. Galvanized pipes are very heavy and difficult to install/repair. They are prone to chipping and cracking. They get clogged over time, leading to reduced water pressure. When galvanized pipes corrode, dangerous levels of lead is released into the water system. It is highly preferred in large construction projects because of its durability and is resistant to abrasion and rust. Low maintenance cost : Since GI pipes are coated with Zinc, they are known for staying durable for a long period of time due to their sturdiness. 
By far, the most significant problem related to galvanized pipes is the mineral deposits that accumulate within the piping. Over time, it causes a reduction in water pressure and pollutes your home's water. And as rust and corrosion deepen, they compromise the piping system's stability and cause leaks.
Galvanized Iron (GI) is sold by Camas Teel which is commonly used in many industrial and commercial uses for their protective steel properties in its steel zinc-coated form. Galvanized Iron is steel or iron that has a layer of protective zinc coating applied to the surface to prevent rusting.

If you are connecting galvanized pipes that are not already threaded, you'll need to use a galvanized iron coupling that creates a properly sealed joint. Failure to use the correct coupling can cause damaging leaks, mostly due to the rough edges most galvanized pipes have as a result of the zinc coating.