Singapore legislation
Regulation 68
Regulation 68
Process of manufacture
Subregulation 1
All steel forgings intended for use in the construction of hulls, boilers and their fittings, and machinery shall be made by the open hearth process, acid or basic.
Subregulation 2
The forgings shall be made from sound ingots, not more than the lower two-thirds of the ingot being utilised for the purpose. The sectional area of the body of the forging shall not exceed 20% of the sectional area of the original ingot, and no part of the forging shall have more than two-thirds of the sectional area of the ingot.