The contraction in factory growth rate, after a robust uptick in the previous month, also resulted in some job losses and companies adopted a cost-cautious approach to hiring.
The headline HSBC India Purchasing Managers' Index (PMI), compiled by Markit, stood at 51.3 in April, down from 52.1 in March, pointing to a weaker improvement in operating conditions across various industries.
The PMI is a composite gauge designed to give a single figure snapshot of manufacturing business conditions. A measure above 50 indicates that the sector is expanding, while a figure below that level means contraction.
"Despite recording softer rates of expansion, the Indian manufacturing sector held its ground in April, benefiting from ongoing improvements in operating conditions," Markit Economist Pollyanna De Lima said.
The headline index was recorded above the crucial 50.0 threshold for the 18th successive month.
"However, we are yet to see growth leading to meaningful job creation, as the index measuring employment has shown little change to staff numbers since the beginning of 2014," De Lima added.
April saw companies maintain a cost-cautious approach to hiring and vast majority of panelists signalled no change in employment levels.
The next review meeting is scheduled on June 2, although the previous two cuts have taken place outside the scheduled policy reviews. The HSBC's manufacturing survey results for the current month would be released on June 1.
On the price front, tariffs fell for the first time since May 2013, as firms responded to a weaker cost inflation, HSBC said.
