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. GI pipes are available in three grades depending on the thickness of the sheet used in the pipe. The three grades are as follows.
1. Light- Class A: The pipe is marked in yellow color for identification
2. Medium- Class B: The pipe is marked in blue color for identification.
3. Heavy - Class C . The pipe is marked in red color for identification.
The thickness and weight of 15 mm GI pipe is given below.
|
No. |
Class of Pipe |
Thickness of sheet |
Weight per meter |
|
1 |
Class A |
2 mm |
1.00 Kg. |
|
2 |
Class B |
2.65 mm |
1.28 Kg |
|
3 |
Class C |
3.25 mm |
1.50 Kg |
GI pipes are available in 6 meter length. They are commonly used for plumbing and are equally good for high pressure supply lines. The fitting used for GI pipes should be IS No: 1239, Part 2 -1990.
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