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Reg. 92
MATERIALS OF CONSTRUCTION

GENERAL GREY IRON CASTINGS (GRADE A)

Number of transverse and tensile tests.-

The number of tests required for each batch of castings shall be in accordance with the following table, the various classes of castings being divided into four representative groups. One test shall refer to one transverse and one tensile test, whether taken from one or two test bars as cast.

Group
Weight of castings
Test requirements
1 Upto 28 lbs.
One test for each 30 cwt. of castings or part thereof.
2 Over 28 lbs. and upto 1 cwt.
One test for each 2 tons of castings or part thereof.
3 Over 1 cwt. and upto one ton
One test for each 4 tons of castings or part thereof.
4 Over 1 ton and important castings where mutually agreed upon.
One test for each 4 tons of castings or part thereof or for each casting weighing 4 tons or more.


In the above Groups 1, 2 and 3, all castings represented by one test must be poured from the same ladle or same heat as the bar or bars provided for the test.

 
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Message from Chairman of Central Boilers Board About Central Boiler Board History of Indian Boiler Regulations Foreword Contents Chapter Wise Contents Regulation Wise List of Amendments
Indian Boilers Act 1923 Ibr Forms Home Search Help Contact Us