The least thickness of class B cast iron (spun) pipe, is (A) 7.2 mm (B) 7.9 mm (C) 8.6 mm (D) 10 mm

The least thickness of class B cast iron (spun) pipe, is
(A) 7.2 mm
(B) 7.9 mm
(C) 8.6 mm
(D) 10 mm
by

1 Answer

Answer :

(C) 8.6 mm
by

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