IS: 1239 (Part I) - 1973 (with amendment No.3 - 1978) : Specification for Mild Steel Tubes, Tubulars and Other Wrought Steel Fittings Part 1 Mild Steel Tubes
IS: 1239 (Part I) - 1973 (with amendment No.3 - 1978) : Specification for Mild Steel Tubes, Tubulars and Other Wrought Steel Fittings Part 1 Mild Steel Tubes
- New Delhi BIS 1974
- 17p
/
/