Mild Steel and Galvanized Pipes
| Sr. No. |
material |
size (in mm) |
sch. & swg. | specification |
| 1 | mild steel (m. S. ) & g. I. |
15 nb to 150 nb | ‘a’ class ‘b’ class ‘c’ class |
is 1239 |
| 200 nb to 500 nb | 4. 85 mm to 12. 7 mm thk. | is 3589 (fe 330, fe 410) |
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