3 Water and Wastewater Treatment Plant Builder, Diesel and Gas Engines Maker and Largest Structural Steel Tubes Maker Stocks With a Strong Future Roadmap: VA Tech Wabag, Kirloskar Oil Engines and APL Apollo Tubes

Water plant, engine and tube stocks offer a focused view of a sector where demand keeps widening. VA Tech Wabag, Kirloskar Oil Engines and APL Apollo Tubes cover a water and wastewater treatment plant builder, a diesel and gas engines maker and the largest structural steel tubes maker.

This list covers three water plant, engine and tube stocks with complete current figures: VA Tech Wabag, Kirloskar Oil Engines and APL Apollo Tubes. Every figure comes from the latest reported financials and the 29 October 2026 market close. Companies without complete current figures were left out.

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What Are Water Plant, Engine and Tube Stocks?

Water plant, engine and tube stocks are listed companies that design and run water treatment and desalination plants, make engines, generator sets and pumps for farm and industry and supply structural steel tubes for buildings, infrastructure and solar projects. Their earnings depend on orders, capital spending and input costs.

Water Plant, Engine and Tube Stocks at a Glance

On valuation, all three trade at a P/E above their industry P/E, which reflects the growth the market already expects from them. Readers comparing water plant, engine and tube stocks should look at return on equity and debt together, since a high return earned with low debt is easier to sustain. With the Q2 FY27 results season close, investors in water plant, engine and tube stocks can use the coming numbers to test whether growth is holding.

Why Do Water Plant, Engine and Tube Stocks Have a Strong Roadmap in India?

Water plant, engine and tube stocks have a strong roadmap in India because rising water treatment needs, new infrastructure and solar projects and growing farm and backup power demand keep widening the market for these engineering firms.

• Water projects. Cities and industry invest in treatment and reuse.
• Engine demand. Farms and sites need reliable power.
• Building steel. Structural tubes serve homes and solar plants.

Why VA Tech Wabag Features Among These Water Plant, Engine and Tube Stocks

Among the water plant, engine and tube stocks on this list, VA Tech Wabag designs, builds and operates water and wastewater treatment plants, including desalination and recycling plants, for municipal and industrial customers in India and abroad.

In the June 2026 quarter, revenue grew 26.0% year on year to Rs 939 crore, while net profit rose 36.9% to Rs 90.1 crore. Revenue rose from Rs 3,012 crore in FY22 to Rs 4,038 crore in FY26, a compound annual growth rate of 7.6%.

Net profit grew from Rs 132 crore in FY22 to Rs 370 crore in FY26, which works out to a compound annual growth rate of 29.4%. The company has a return on equity of 14.4%, a debt to equity ratio of 0.09 and a market capitalisation of Rs 11,717 crore. The stock trades at a P/E of 29.7, above the industry P/E of 22.7.

Roadmap: Government missions for drinking water supply and sewage treatment, along with industrial water reuse, feed a long project pipeline. Operation and maintenance contracts add recurring revenue, and international orders widen the customer base.

What to watch: Monitor the order book, the share of operation and maintenance contracts and working capital cycles on large projects.

Why Kirloskar Oil Engines Features Among These Water Plant, Engine and Tube Stocks

Among the infrastructure and farm shares on this list, Kirloskar Oil Engines, based in Pune, makes diesel and gas engines, generator sets, pumps and power solutions for industrial, farm and infrastructure use.

The company has a return on equity of 15.9%, a debt to equity ratio of 1.48 and a market capitalisation of Rs 28,722 crore. The stock trades at a P/E of 53.7, above the industry P/E of 44.4.

Revenue rose from Rs 4,049 crore in FY22 to Rs 7,772 crore in FY26, a compound annual growth rate of 17.7%. Net profit grew from Rs 171 crore in FY22 to Rs 558 crore in FY26, which works out to a compound annual growth rate of 34.4%. In the June 2026 quarter, revenue grew 12.1% year on year to Rs 2,015 crore.

Roadmap: Backup power demand from data centres, telecom and infrastructure, a growing exports business and new alternative-fuel engines give it several tracks for growth. A large service network helps it hold on to customers across product cycles.

What to watch: Watch order intake from data centres and the pace of new product launches in cleaner fuels.

Why APL Apollo Tubes Features Among These Water Plant, Engine and Tube Stocks

Among the three companies on this list, APL Apollo Tubes is India's largest maker of structural steel tubes, supplying galvanised and pre-galvanised tubes for buildings, infrastructure, solar structures and housing.

Revenue rose from Rs 13,104 crore in FY22 to Rs 23,191 crore in FY26, a compound annual growth rate of 15.3%. Net profit grew from Rs 619 crore in FY22 to Rs 1,203 crore in FY26, which works out to a compound annual growth rate of 18.1%.

In the June 2026 quarter, revenue grew 8.7% year on year to Rs 5,646 crore, while net profit rose 10.9% to Rs 263 crore. The company has a return on equity of 22.7%, a debt to equity ratio of 0.09 and a market capitalisation of Rs 59,835 crore. The stock trades at a P/E of 48.7, above the industry P/E of 44.4.

Roadmap: The company is widening its product range into value-added tubes, expanding capacity across the country and growing its dealer network. Adoption of steel structures in buildings and solar installations supports volume growth.

What to watch: Check the growth in value-added products and the commissioning of new plants.

VA Tech Wabag vs Kirloskar Oil Engines vs APL Apollo Tubes on Key Financials

The table below sets the three water plant, engine and tube stocks side by side on revenue, profit and margin, using reported figures.

APL Apollo Tubes posts the highest return on equity in this group at 22.7%. APL Apollo Tubes has the largest FY26 revenue at Rs 23,191 crore, and Kirloskar Oil Engines shows the fastest revenue growth with a 17.7% compound annual rate. A useful habit with water plant, engine and tube stocks is to check each new quarterly result against the capacity plans the company described earlier. Many investors spread money across several water and building steel stocks instead of one name, which keeps a single result from deciding the outcome.

The June 2026 quarter, the latest reported, gives a fresh read on momentum:

Key Risks to Check Before Investing in Water Plant, Engine and Tube Stocks

Every theme carries risks that deserve a check before any decision. For these water plant, engine and tube stocks, the main points are: Long-term infrastructure and farm shares holders usually track revenue growth, margins and cash flow side by side rather than relying on a single ratio.

• Government spending. Public project funding can shift between periods.
• Input costs. Metal and material prices can move margins.
• Valuation levels. Some of these companies trade at high earnings multiples, so growth must continue to justify them.

Treat this list as a starting point for research and not as a recommendation. Read the latest results presentation, check the management commentary on order books or capacity plans, and compare each company with its peers before you decide anything.

Use the Univest Stock Screener to filter water plant, engine and tube stocks by market capitalisation, P/E, ROE and growth, and build your own shortlist.

Final Thoughts on Water Plant, Engine and Tube Stocks

Water plant, engine and tube stocks reward patient research into demand, execution and financial strength. VA Tech Wabag, Kirloskar Oil Engines and APL Apollo Tubes each have a clear plan to grow. Based on the 29 October 2026 close, VA Tech Wabag trades at Rs 1,862.8, Kirloskar Oil Engines at Rs 1,890.3 and APL Apollo Tubes at Rs 2,195. Valuation matters as much as growth, so compare each company's P/E with its industry P/E before adding any of these water plant, engine and tube stocks to a watchlist.

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What are water plant, engine and tube stocks?

Ans. Water plant, engine and tube stocks are listed companies that design and run water treatment and desalination plants, make engines, generator sets and pumps for farm and industry and supply structural steel tubes for buildings, infrastructure and solar projects. Their earnings depend on orders, capital spending and input costs. This list looks at three of them, VA Tech Wabag, Kirloskar Oil Engines and APL Apollo Tubes, using reported FY22 to FY26 financials and the 29 October 2026 closing prices.

Which water plant, engine and tube stocks are covered in this list?

Ans. This list covers VA Tech Wabag, Kirloskar Oil Engines and APL Apollo Tubes. Based on the 29 October 2026 close, VA Tech Wabag traded at Rs 1,862.8, Kirloskar Oil Engines at Rs 1,890.3 and APL Apollo Tubes at Rs 2,195. Their return on equity ranges from 14.4% to 22.7%, and their revenue compound annual growth from FY22 to FY26 ranges from 7.6% to 17.7%.

Why do water plant, engine and tube stocks have a strong future roadmap in India?

Ans. Water plant, engine and tube stocks have a strong roadmap in India because rising water treatment needs, new infrastructure and solar projects and growing farm and backup power demand keep widening the market for these engineering firms. The main drivers are as follows. Water projects. Cities and industry invest in treatment and reuse. Engine demand. Farms and sites need reliable power. Building steel. Structural tubes serve homes and solar plants. Together these factors give the companies on this list a visible path for growth over the coming years.

How has VA Tech Wabag performed financially?

Ans. Revenue rose from Rs 3,012 crore in FY22 to Rs 4,038 crore in FY26, a compound annual growth rate of 7.6%. Net profit grew from Rs 132 crore in FY22 to Rs 370 crore in FY26, which works out to a compound annual growth rate of 29.4%. In the June 2026 quarter, revenue grew 26.0% year on year to Rs 939 crore, while net profit rose 36.9% to Rs 90.1 crore. The company has a return on equity of 14.4%, a debt to equity ratio of 0.09 and a market capitalisation of Rs 11,717 crore. The stock trades at a P/E of 29.7, above the industry P/E of 22.7. Looking ahead, government missions for drinking water supply and sewage treatment, along with industrial water reuse, feed a long project pipeline. Operation and maintenance contracts add recurring revenue, and international orders widen the customer base.

How has Kirloskar Oil Engines performed financially?

Ans. Revenue rose from Rs 4,049 crore in FY22 to Rs 7,772 crore in FY26, a compound annual growth rate of 17.7%. Net profit grew from Rs 171 crore in FY22 to Rs 558 crore in FY26, which works out to a compound annual growth rate of 34.4%. In the June 2026 quarter, revenue grew 12.1% year on year to Rs 2,015 crore. The company has a return on equity of 15.9%, a debt to equity ratio of 1.48 and a market capitalisation of Rs 28,722 crore. The stock trades at a P/E of 53.7, above the industry P/E of 44.4. Looking ahead, backup power demand from data centres, telecom and infrastructure, a growing exports business and new alternative-fuel engines give it several tracks for growth. A large service network helps it hold on to customers across product cycles.

How has APL Apollo Tubes performed financially?

Ans. Revenue rose from Rs 13,104 crore in FY22 to Rs 23,191 crore in FY26, a compound annual growth rate of 15.3%. Net profit grew from Rs 619 crore in FY22 to Rs 1,203 crore in FY26, which works out to a compound annual growth rate of 18.1%. In the June 2026 quarter, revenue grew 8.7% year on year to Rs 5,646 crore, while net profit rose 10.9% to Rs 263 crore. The company has a return on equity of 22.7%, a debt to equity ratio of 0.09 and a market capitalisation of Rs 59,835 crore. The stock trades at a P/E of 48.7, above the industry P/E of 44.4. Looking ahead, the company is widening its product range into value-added tubes, expanding capacity across the country and growing its dealer network. Adoption of steel structures in buildings and solar installations supports volume growth.

What risks should investors check before buying water plant, engine and tube stocks?

Ans. Investors should check a few risks before buying water plant, engine and tube stocks. Government spending. Public project funding can shift between periods. Input costs. Metal and material prices can move margins. Valuation levels. Some of these companies trade at high earnings multiples, so growth must continue to justify them. Reading the latest results presentation and comparing each company with its peers helps judge how these risks apply to each stock.

Is this list of water plant, engine and tube stocks investment advice?

Ans. No. This article is educational and uses publicly available data as of the 29 October 2026 close. Please verify figures on NSE and BSE, read company filings and consult a SEBI registered adviser before investing. Univest is SEBI registered research analyst INH000013776.