DEE Development Engineers is a design-led manufacturing partner that builds the high-pressure piping systems at the heart of industrial plants - the arteries carrying steam, chemicals and fuel inside power stations, refineries and petrochemical complexes. Founded in 1988 by a mechanical engineer and run under the brand “DEE piping systems,” the company has spent 38 years turning custom engineering into a repeatable discipline, qualifying for each new customer through audits that can take up to two years and then holding onto those relationships for a decade or more. The recurring approach is to own the full chain - design, procure, bend, weld, test and ship - from port-adjacent factories, so that a complex project lands at a customer’s site ready to install rather than as a box of loose parts.
Business segments
Three engines at different stages - a process-piping cash generator that is India’s largest by capacity, a small heavy-fabrication unit riding the same factory floor, and a legacy biomass-power business being converted into a pellet-supply model - all anchored by the same engineering and manufacturing backbone.
1. Process piping solutions: the core factory that builds industrial arteries
Custom-engineered pipe spools, bends and pressure vessels are made to order for the world’s toughest industrial projects, with a 40% bid-success rate and an order book that gives nearly two years of revenue visibility.
- Design-led, not just bend-and-ship - 730-plus in-house engineers design and get customer approval for every piping layout before a single pipe is cut, so the company sells a guaranteed system rather than a commodity.
- The moat is the qualification door - winning a new customer requires passing a technical audit that often stretches over 24 months, which means once DEE is inside a client’s approved-vendor list, replacement is slow and expensive for the client.
- Port-adjacent factories cut time and cost - the main Anjar facility in Gujarat sits near Kandla and Mundra ports, so imported steel arrives fast and finished pipe spools leave for export without a long inland haul, shrinking both working capital and delivery time.
- A seamless pipe plant that replaced imports - the new 7,000-tonne-per-year line at Anjar makes high-wall-thickness alloy-steel pipes for supercritical power plants, a product India previously bought entirely from China or Europe; the plant won its first ₹58 crore order before starting production in March 2026.
- Hydrogen is the next leg - the majority stake acquisition of Molsieve Designs in 2025 added gas-purification systems that can produce hydrogen at 99.9999% purity, and a clean-tech partnership signed in mid-2025 aims at building complete green-hydrogen production projects in India and Thailand.
2. Heavy fabrication: wind towers and chimney stacks from the same factory floor
A dedicated subsidiary at Anjar turns steel plate into tubular wind-turbine towers and industrial chimney stacks up to 140 metres tall, using the same welding and testing skills that power the piping business.
- Wind towers built in sections - the factory produces custom tubular steel towers in segments of 12 to 33 metres, complete with internal working platforms and fall-protection systems, so they arrive at the wind farm ready for rapid assembly.
- A recent order proves the model - in June 2026 the subsidiary won a ₹64 crore contract for fifteen 353-tonne towers for 3.3 MW windmills, with delivery due by January 2027, showing the business can win standalone orders outside the piping umbrella.
- Thailand capacity is already being reserved - the Bangkok fabrication plant signed an agreement in May 2026 that books 60% of its total capacity for heat-recovery steam-generator pipe spools from mid-2027 through end-2029, guaranteeing a minimum of US$15.27 million a year.
3. Biomass power and pellets: a legacy plant being repurposed
Two small biomass power stations burning paddy straw and rice husk are being pivoted toward manufacturing biomass pellets, aiming to stop the cash drain and turn the segment into a stable supplier of solid fuel.
- Long-term power purchase agreements provide a floor - the 8 MW Abohar plant sells electricity under a 30-year contract signed in 2011, while the 6 MW Muktsar plant runs under a 20-year deal from 2004, with Punjab State Electricity Board.
- A tariff upgrade has already helped - the Malwa Power plant’s rate was revised upward from ₹3.50 to ₹5.22 per kilowatt-hour, with a retrospective recovery of about ₹5.52 crore, and the company is still pushing for further improvement through an appellate appeal.
- Pellets are the turnaround plan - a newly commissioned biomass pellet facility is expected to offset the segment’s cash consumption, and the pellet capacity is proposed to be housed under an infrastructure investment trust, separating it from the power-generation balance sheet.
Group structure and partners
The parent company sits above four operating subsidiaries that each own a distinct asset - heavy fabrication, a Thai fabrication plant, a biomass power unit, and a hydrogen-purification business - while a fifth subsidiary holds the Abohar power plant and a clean-tech partnership opens a path into green hydrogen.
- DEE Fabricom India Private Limited, a wholly-owned subsidiary, runs the heavy-fabrication facility at Anjar making wind turbine towers and industrial stacks.
- DEE Piping Systems (Thailand) Co. Ltd., incorporated in 2014, operates the 14,500-tonne-per-year Bangkok fabrication plant; the parent injected additional capital in March 2025 to help it repay debt.
- Malwa Power Private Limited, another wholly-owned subsidiary, runs the 6 MW Muktsar biomass plant under its 20-year power purchase agreement.
- Molsieve Designs Limited, a 70% subsidiary acquired in January 2025, brings 22 years of experience in hydrogen purification and industrial gas plants; the promoter personally bought a further 15% stake at the same time.
- The 8 MW Abohar biomass plant operates under a 30-year agreement with Punjab State Power Corporation and sits directly in the group.
- An international clean-tech partner signed a memorandum of understanding in June 2025 to co-develop green hydrogen production projects in India and Thailand, with the partner supplying electrolyser and purification technology while DEE handles local marketing, tenders, execution and after-sales service.