Get contact details & address of companies manufacturing and supplying Galvanized Iron Pipes , GI Pipes across India. Founded in 2007, Aesteiron is one of the leading GI Pipe manufacturer in India, 3 and 6 metre lengths Galvanized Square Pipe in in Light, Medium Gauge as per BS 1387. Learn about the different types of GI pipes , their classes, and applications. Understand GI pipe classification based on thickness, coating, and pressure use. Galvanised Iron pipes , or GI pipes, are zinc-coated steel pipes commonly utilised in the construction of buildings, engineering, and plumbing. The zinc coating prevents the pipes from corroding, making them very resistant and functional in the transmission of gas, water, and sewage.