GI pipes are manufactured conforming to IS-1239 (pt-I) 1990. Generally screwed & Socketed pipes are used. GI pipes (IS No: 1239; Part 1- 1990) are made from hot rolled coils of specified thickness. The pipes are fully galvanized. They are available in 8 mm dia. to 100 mm dia. Galvanized steel pipes are covered by a layer of zinc. Galvanized steel pipes and tubes are mostly used in structural applications. They are commonly used for plumbing and are equally good for high pressure supply lines. GI pipes are available in three grades depending on the thickness of the sheet used in the pipe. The three grades are as under.

GI pipes are manufactured conforming to IS-1239 (pt-I) 1990. Generally screwed & Socketed pipes are used. GI pipes (IS No: 1239; Part 1- 1990) are made from hot rolled coils of specified thickness. The pipes are fully galvanized. They are available in 8 mm dia. to 100 mm dia. Galvanized steel pipes are covered by a layer of zinc. Galvanized steel pipes and tubes are mostly used in structural applications. They are commonly used for plumbing and are equally good for high pressure supply lines. GI pipes are available in three grades depending on the thickness of the sheet used in the pipe. The three grades are as under.