The headline HSBC India Purchasing Managers' Index (PMI) -- a composite gauge designed to give a single-figure snapshot of manufacturing business conditions -- stood at 54.5 in December, up from 53.3 in the prior month.
The manufacturing sector output, improved for the 14th month in a row and reached a two-year peak in December.
A figure above 50 indicates the sector is expanding, while a figure below that level means contraction.
The accelerated growth of the manufacturing sector was reflected by faster expansions in output, new business and foreign orders.
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Manufacturing companies registered a further rise in new export business in December and new work from abroad expanded at the quickest pace since April 2011.
Meanwhile, contrasting with continued growth of production and incoming new work, staffing levels in India's manufacturing economy declined in December.
The latest data also indicated towards a brighter picture in terms of prices, as inflationary pressures eased during the month.
On the Reserve Bank's monetary policy stance, Bhandari said, "With the disinflationary trend gaining ground, the RBI is expected to find space for some rate cuts in 2015."
RBI Governor Raghuram Rajan in the monetary policy review meet in December, 2014, had kept interest rate unchanged, saying that a shift in stance is 'premature' but hinted that a cut may come early next year if inflation continues to ease and government acts on the fiscal side.