DEE DEVELOPMENT ENGINEERS LIMITED — Capital/Financing Update 2026

Feb 27, 2026

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Date: 27[th] February, 2026

Listing Compliance Department

BSE Limited The National Stock Exchange of India Phiroze Jeejeebhoy Tower, Ltd. Exchange Plaza, Plot No. C/1, G Dalal Street, Block, Bandra Kurla Complex, Bandra (E), Mumbai – 400001 Mumbai – 400051 Scrip Code: 544198 Symbol: DEEDEV

Subject: Press Release – DEE Development Engineers Secures ₹58 Crore Seamless Pipe Manufacturing Contract from Leading Industrial Customer which its First Contract for Upcoming Seamless Pipe Plant in Anjar

Dear Sir/Ma’am,

Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, enclosed herewith is the press release issued by the Company on the captioned subject, the content of which is self-explanatory.

The above information is being made available on the website of the Company www.deepiping.com.

This is for your information and record please.

Yours faithfully,

For DEE Development Engineers Limited

Ranjan Digitally signed by Kumar Ranjan Kumar Sarangi Date: 2026.02.27 Sarangi 14:28:05 +05'30'

__________ Ranjan Kumar Sarangi Company Secretary and Compliance Officer Membership No.: F8604 Address: Unit 1, Prithla - Tatarpur Road, Village Tatarpur Dist. Palwal, Faridabad, Haryana – 121 102

DEE DEVELOPMENT ENGINEERS LIMITED

Regd. Office: Unit 1, Prithla-Tatarpur Road, Village Tatarpur, Dist. Palwal, Haryana- 121102, India Works: Unit 1, 2 & 3, Village Tatarpur, Dist. Palwal, Haryana- 121102, India T: +91 1275 248200, F: +91 1275 248314, E: info@deepiping.com, W: www.deepiping.com CIN: L74140HR1988PLC030225 GST Registration No . 06AACCD0207H1ZA

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Press Release

DEE Development Engineers Secures ₹58 Crore Seamless Pipe Manufacturing Contract from Leading Industrial Customer

First Contract for Upcoming Seamless Pipe Plant in Anjar Marks Strategic Expansion of Product Portfolio

Editor’s Synopsis:

• Contract value: ₹58 crore (first mandate in seamless pipe category)

• Customer: Joint venture of an Indian and foreign conglomerate in the power sector

• Scope: Manufacturing of alloy steel seamless pipes at Anjar facility

• Execution period: To be completed by December 2026

• To be manufactured at the Company's upcoming seamless forged pipe plant in Anjar, Gujarat, scheduled for commissioning imminently

National | 27th February 2026:

DEE Development Engineers Limited (BSE: 544198 | NSE: DEEDEV), a leading engineering and process piping solutions provider, has secured a ₹58 crore contract for the manufacture and supply of alloy steel seamless pipes. The contract will be executed at the Company's seamless forged pipe manufacturing facility in Anjar, Gujarat, which is nearing commissioning.

The mandate has been awarded by a joint venture of an Indian and foreign conglomerate operating in the power sector. While the customer's name remains confidential for commercial reasons, this contract represents the first commercial engagement for DEE's seamless pipe division and marks a significant milestone in the Company's backward integration journey.

The Anjar facility has been purpose-built for the manufacture of seamless forged pipes catering to high-temperature and high-pressure applications, particularly in supercritical and ultrasupercritical power plants. Once commissioned, the plant will enable DEE to offer a more complete, end-to-end piping solution to its energy infrastructure customers, strengthening supply reliability and reducing dependence on imports for specialized alloy grades.

The seamless pipe capability complements DEE's existing portfolio of process piping systems, engineered components, and fabrication solutions, enabling a more integrated offering to customers across the power and process industries. Manufacturing under this contract is scheduled for completion by December 2026, with the facility's commissioning timeline providing adequate headroom for timely execution.

Commenting on the development, Mr. K. L. Bansal, Chairman and Managing Director, DEE Development Engineers Limited, said: "The seamless pipe facility at Anjar has been developed with a clear strategic objective — to deepen our backward integration and enhance our ability to serve high-specification, critical application requirements in the energy sector. Securing our first contract in this segment, even as the facility approaches commissioning,

DEE DEVELOPMENT ENGINEERS LIMITED

Regd. Office: Unit 1, Prithla-Tatarpur Road, Village Tatarpur, Dist. Palwal, Haryana- 121102, India Works: Unit 1, 2 & 3, Village Tatarpur, Dist. Palwal, Haryana- 121102, India T: +91 1275 248200, F: +91 1275 248314, E: info@deepiping.com, W: www.deepiping.com CIN: L74140HR1988PLC030225 GST Registration No . 06AACCD0207H1ZA

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reflects the market's confidence in DEE's technical capabilities and our track record as a reliable manufacturing partner.

Once operational, this facility will allow us to offer a truly integrated piping solution, improving execution flexibility and supply assurance for our customers. As energy infrastructure investments continue to scale — particularly in advanced power generation — we expect this addition to meaningfully contribute to our competitiveness and long-term growth."

This seamless pipe contract follows a series of significant wins during the current quarter, including the previously announced Letter of Intent exceeding USD 40 million for international HRSG piping supply across 16 units from a leading U.S.-headquartered OEM, as well as domestic and Thailand subsidiary orders aggregating to over ₹170 crore across fabrication, HRSG piping, and fittings. The cumulative momentum across these mandates reflects sustained traction in both domestic and export markets and reinforces DEE Development Engineers' positioning as an integrated manufacturing partner for large-scale energy infrastructure projects.

About DEE Development Engineers Limited

DEE Development Engineers Limited is a leading engineering solutions provider specialising in process piping systems, engineered equipment, and fabrication solutions for the power, oil & gas, and industrial infrastructure sectors. The Company operates integrated manufacturing facilities across India and Thailand, with capabilities spanning design, engineering, fabrication, and supply of high-specification piping systems and related components for critical applications.

DEE DEVELOPMENT ENGINEERS LIMITED

Regd. Office: Unit 1, Prithla-Tatarpur Road, Village Tatarpur, Dist. Palwal, Haryana- 121102, India Works: Unit 1, 2 & 3, Village Tatarpur, Dist. Palwal, Haryana- 121102, India T: +91 1275 248200, F: +91 1275 248314, E: info@deepiping.com, W: www.deepiping.com CIN: L74140HR1988PLC030225 GST Registration No . 06AACCD0207H1ZA