IS: 1239 (Part II) - 1969 : Specification for Mild Steel Tubes, Tubulars and Other Wrought Steel Fittings Part 2 Mild Steel Tubulars and other Wrought steel Pipe Fittings
IS: 1239 (Part II) - 1969 : Specification for Mild Steel Tubes, Tubulars and Other Wrought Steel Fittings Part 2 Mild Steel Tubulars and other Wrought steel Pipe Fittings
- New Delhi BIS 1970
- 38p
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