BEIJING Thu Jan 22, 2015 9:04pm EST

China's manufacturing growth stalled for the second straight month in January and companies had to cut prices at a faster clip to win new business, adding to worries about growing deflationary pressures in the economy, a private survey showed.

The HSBC/Markit Flash Manufacturing Purchasing Managers' Index (PMI) hovered at 49.8 in January, little changed from December's 49.6 and just below the 50-point mark that separates growth from contraction on a monthly basis.

A Reuters poll had forecast a second month of contraction with a reading of 49.6.

Reflecting the tumble in oil prices, which have more than halved in the last six months, a sub-index for input prices sank to 39.9, a level not seen since the global financial crisis.

But companies also had to cut output prices for the sixth straight month to sell their products, and more deeply than in December.

"Today's data suggest that the manufacturing slowdown is still ongoing amidst weak domestic demand," Qu Hongbin, a HSBC economist in Hong Kong said on Friday.

"More monetary and fiscal easing measures will be needed to support growth in the coming months."

Falling prices are a concern for China, which wants to avoid Japan's fate of sinking into a 20-year deflationary funk that has depressed consumption and economic growth.

The survey showed final demand for China's factory goods rose this month, but only modestly as the sub-indices for new orders and new export orders stood close to the 50-point threshold.

Factories laid off staff for the 15th consecutive month in January in the face of tepid demand, the PMI showed.

There are already some signs of stubborn deflationary pressure in China.

Producer prices have fallen for almost three straight years. That helped to drag China's annual consumer inflation to a near five-year low of 1.5 percent in December.

To contain deflationary risks, economists at state think-tanks who are privy to China's policy discussions said authorities are ready to cut interest rates further and pressure banks to step up lending. The central bank unexpectedly cut rates in November for the first time in more than two years.

Some Chinese consumers are already postponing purchases in anticipation that prices will fall further in the future, a classic warning sign of deflation that would deal another blow to the Chinese economy, where growth hit a 24-year-low of 7.4 percent last year.

Although 2014 economic growth data was not as bad as some had feared, it suggested that a steady series of policy easing had not sustained activity as much as policymakers had hoped.

Economists polled by Reuters expect the economy to slow further this year to around 7 percent, even with additional stimulus measures. A cooling property market, high financing costs and heavy corporate and local government debt loads will likely continue to drag on activity.

Chinese Premier Li Keqiang acknowledged on Wednesday that the world's second-largest economy will face downward pressures in 2015 but said it was not heading for a hard landing.