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patelalpesh, you must appreciate the fact that you are on a international forum and not everyone has a reasonable general knowledge.
Back to the point, TIP 31 should be available in your area or you can buy online. If you really cant find it then better approach would be let us know what you are trying to build so we can suggest an alternate way of not an alternate device.
Ahmedabad(23° 25' 0 N, 72° 55' 0 E) is capital of Gujarat State of India.
(Gandhinagar, 20Km from Ahmedabad is the real capital though)
Being a state capital, and the component TIP31C still under manufacture in India By BEL (Bharat Electronics Limited), it should not be a problem to get few of them. Patelalpesh may try with a BEL distributor of industrial component seller.