As PM Modi prepares for polls, he has been ensnared by protectionism, threatening FDIs in India

Highlights India has raised import duties to its highest in three decades

US said it's studying imports of welded pipes from India, 5 other nations

This could be bad news for India at World Trade Organisation, say experts

Less than a month after he declared to the World Economic Forum that India was open for business, Prime Minister Narendra Modi has raised import duties to their highest in three decades, setting the stage for a protracted trade war.As he prepares to seek re-election next year, PM Modi has been ensnared by a global wave of protectionism that could threaten the foreign direct investments India needs to achieve double-digit growth. He has made it more expensive to import parts for automobiles, cameras, televisions, electricity meters and smartphones, risking trade disputes from allies like the U.S. and Germany to rivals like China."India has taken a dramatic protectionist turn," Richard Rossow, an Indian policy expert at the Washington-based Center for Strategic and International Studies, wrote in a note. "The scale of India's protectionist leap is surprising and likely to elicit a strong response from the United States and other major trading partners."President Donald Trump signaled tit-for-tat duties against India's barriers on motorcycles , while the German Ambassador to India, Martin Ney, questioned the decision to raise custom duty on the import of auto components. The U.S. commerce department on Tuesday said it was examining imports of welded pipes from India and five other countries.All this could add up to bad news for India at the World Trade Organisation."This can escalate at the WTO," said Rahul Shukla, Delhi-based executive director at Pricewaterhouse Coopers Pvt. "If they really want to help local industry there's so much more that could be done, and it's true that industry needs help. But these are the highest barriers we have seen in a long while."India's move comes as it faces the widest trade deficit in three years and a resilient rupee. Data from the government is due on Thursday and though it is expected to show a pull back for January, India's yawning deficit with Asian powerhouse China is a matter of concern.Indian imports from China have soared in the past few years, out pacing exports and leaving the local industry, especially the medium and small sectors, gasping for survival. And exports from the $2.3 trillion economy have slowed at a time when the global economy is ticking higher.Finance minister Arun Jaitley announced in his Feb. 1 budget speech that the barriers would push the government's flagship 'Make in India' program to encourage local manufacturing. Yet some believe the electoral costs incurred by PM Modi after a chaotic roll out of the national goods and services tax -- including significant disruptions to businesses -- may have driven the government to resort to protectionism.The barriers will remain in place for another two-to-three years to help small and medium companies, said Vanaja Sarna, chairwoman of India's Central Board of Excise and Customs in an interview.

But the move may end up hurting local businesses, said Bipul Chatterjee, executive director at New Delhi-based think tank CUTS International."A hike of 15 to 20 percent is not much for Chinese and South Korean companies -- they can easily absorb it. This will end up hurting Indian competitiveness more than the government imagines," he said.