Walchandnagar Industries

Updated 8 Jul 2026
Manufacturer India Listed
4 Products
5 Services
118 Years Active
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About Walchandnagar Industries

Walchandnagar Industries Limited (WIL) is an ISO 9001:2015 certified Indian heavy-engineering company listed on the BSE and NSE, carrying a legacy of more than 100 years of engineering excellence since its founding in 1908. Headquartered in Pune, Maharashtra, with major manufacturing facilities at Walchandnagar, Satara, Dharwad and Dahej, WIL operates across strategic sectors — Aerospace, Defence & Missiles, and Nuclear Power — alongside industrial products such as gear boxes, centrifugal machines and precision castings.

WIL's association with the Indian Space Research Organisation (ISRO) began in 1973 with the manufacture of motor cases for the SLV-3 programme. Since then, the company has been a continuous fabrication partner across India's launch-vehicle evolution — SLV-3, ASLV, PSLV and GSLV Mk II and Mk III — supplying strap-on booster casings, core booster motor segments, nozzles, tankages and end rings. Hardware built by WIL has flown on the missions that orbited ROHINI, SROSS, IRS and INSAT/G-SAT satellites, and the company takes pride in having contributed critical fabricated equipment to India's first Moon mission, Chandrayaan-1, and to the Mars Orbiter Mission, Mangalyaan.

WIL holds recognized expertise in handling aerospace-grade materials including 15CDV6 alloy steel, high-strength maraging steel, titanium alloys and aluminium alloys, and has established process parameters for metal forming, metal joining, heat treatment, fabrication, precision machining and pressure testing of very large, complex-geometry rocket motor cases. Its current fabrication capacity supports hardware deliveries for up to 12 PSLV flights and 4 GSLV Mk III flights per year, underpinned by state-of-the-art manufacturing infrastructure and quality systems built to meet ISRO's stringent specifications.

Milestones

  • 1908 Walchandnagar Industries founded
  • 1973 Association with ISRO commences with the SLV-3 program
  • 1985 Manufacturing commences for PSLV
  • 1987 First PSLV segment handed over to Prof. U.R. Rao
  • 2003 Manufacturing of S200 (GSLV Mk III strap-on) segments commences at WIL
  • 2006 First S200 segment handed over to Director, VSSC
  • 2008 Hardware manufactured at WIL flies on Chandrayaan-1
  • 2013 Hardware manufactured for India's Mars Orbiter (Mangalyaan) mission
  • 2014 S200 boosters supplied by WIL fly on GSLV Mk III
  • 2018 Manufacturing commences for the Small Satellite Launch Vehicle (SSLV)
  • 2023 Hardware contributed to Chandrayaan-3 and Aditya-L1 missions

Photos 1

Products

4

Solid-propellant strap-on booster motor casings manufactured for ISRO's PSLV and GSLV Mk II launch vehicles.

1 7

Precision-machined nozzles, propellant tankages and end rings supplied for ISRO's PSLV and GSLV launch vehicle motor stages.

6

First-stage core booster motor casing segments (S139) manufactured for ISRO's PSLV and GSLV Mk II first stage.

1 8

Large-diameter S200 strap-on solid rocket booster segments and nozzle end segments manufactured for ISRO's GSLV Mk III.

1 8

Additional Services

5
Testing & qualification
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Walchandnagar Industries Ltd. provides extensive Non-Destructive Examination (NDE) services. These services include Ultra-sonic testing, Radiography, Leak detection, and Pressure Testing, which also incorporates strain measurements. These tests are performed using their extensive test facilities to ensure the integrity and quality…

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Engineering & analysis
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Walchandnagar Industries Ltd. (WIL) provides comprehensive in-house design and engineering capabilities. They utilize a range of design software to develop solutions. This service allows customers to benefit from WIL's expertise in creating designs for various products and applications, supported by…

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Manufacturing
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Walchandnagar Industries Ltd. provides fabrication services for components, ensuring they comply with numerous international and customer-specific codes of conformance. These include standards such as A.S.M.E. Sec.VIII Div.I, A.S.M.E Sec.VIII Div. II, A.S.M.E. Sec. III NB, A.S.M.E. Sec.III NC, A.S.M.E Sec.III…

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Walchandnagar Industries Ltd. provides services for welding procedures and welders that are qualified under a multitude of third-party inspection surveillances. These include reputable bodies such as I.B.R., N.P.C.I.L, V.S.S.C, E.I.L, L.R.I.S, A.B.S., P.D.I.L, Bax Council, T.E.I.L, B.V., D.R.D.L, and Holtec.…

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