Galvanised Iron (GI) Pipes are manufactured using mild steel strips of Low Carbon Steel Coils. The strips are passed through a series of fin rolls to give them a circular shape. The slit ends of the strips are then welded together by continuously passing high frequency electric current across the edges. The welded steel pipes are then passed through sizing sections where any dimensional deviations are corrected. The pipes are then cut into desired lengths by automatic cutting machines. The tubes are then pressure tested for any leaks randomly. The galvanization and varnishing of pipes are done as per specific requirements.
The GI Pipes are generally used for distribution of treated or raw water in rural or urban areas. These pipes are cheaper, light weight and easy to handle.
GI pipes uses:
Water & Sewage pipes
Electric poles
Structural purposes
Engineering purposes
Automotive purposes
Oil and gas transmissions
GI pipe is a galvanized pipe, also known as galvanized steel pipe, divided into two types: hot-dip galvanizing and electrogalvanizing. The hot-dip galvanizing zinc coating is thick, with advantages such as uniform coating, strong adhesion, and long service life. Electrogalvanizing has a low cost, a less smooth surface, and its corrosion resistance is much worse than that of hot-dip galvanized pipes. It is also divided into cold plated tubes and hot plated tubes. The former has been banned, while the latter has been temporarily recommended by the state for use
Corresponding to national standard 08al
Reference: GB/T 912-1989
Standard number jis g 3132-1990 gb/t 3274-1988
Gb/t 710-1991
Gb/t 711-1988
