Excise on turnover limit of manufacturing of pipe fittings

Dear Sir,

Kindly let know the Nil  Excise Limit on Turnover of Manufacturing of Pipe fittings for Private Limited Company.

I am in a Private limited firm which manufacturers pipe fittings. I tried to search google for the turnover limit for the excise on the same. I am looking for the Manufacturing / Sales limit after which it may come under excise taxation.

Thanking You,

Yours Faithfully,

Lucky Agarwal