BEML Plans Indian Tunnel-Boring Machines to Cut China Reliance

What changed

BEML, India’s state-owned defence and engineering company, plans to develop tunnel-boring machines with Indian technology and intellectual property.

It will start with smaller machines, 3.5 to 6.5 metres in diameter, for metro rail, hydropower, irrigation and water projects. The company is onboarding a global consultant as India targets up to $9.6 billion in tunnelling investment over the next five years.

Why it matters

This is less a race for the biggest machine than a test of whether India can build the industrial plumbing behind its infrastructure boom.

BEML is deliberately avoiding the hardest machines at the outset. The roughly 13.6-metre TBMs used on the Mumbai section of India’s first bullet-train line were made by Germany’s Herrenknecht at its China facility. Smaller urban and utility machines offer BEML a narrower starting point, where domestic capability may be easier to develop.

The timing also reflects a strategic vulnerability. Recent Chinese export controls on some construction-equipment categories have highlighted how much India still depends on overseas suppliers, although BEML says its plan was already underway.

The telling question is whether “Indian technology” means a genuinely local supply chain or mainly local assembly around imported components. India has encountered that problem before: its rare-earth magnet programme was approved after export restrictions, yet it was still importing high-performance neodymium magnets in July because industrial-scale processing facilities were not in place. Solar manufacturing has followed a similar pattern, with strong module production but continued reliance on imported upstream materials and equipment.

BEML’s bet could therefore succeed first as a foothold rather than a clean break. If it can turn the smaller machines into a workable domestic business, the next challenge will be expanding capacity and reducing imported content. If not, India may have built another assembly capability without fully gaining control of the technology it needs.