ACSR and AAAC conductors manufactured at Gummidipoondi, Tamil Nadu, under two BIS licences held continuously for fifteen years — and supplied to Tamil Nadu's state power utilities without a single liquidated-damages recovery.
Cross-sections drawn at true relative size from IS 398 stranding. Diameter shown under each.
19,363 km of conductor, carrying power across Tamil Nadu since 2009.
Both BIS licences can be checked against the Bureau of Indian Standards public register. Search either CM/L number on manakonline.in and the record returns licence status, the Indian Standard covered, factory location and validity.
| IS 398 Part 2 — ACSR | CM/L 0003503344 |
|---|---|
| IS 398 Part 4 — AAAC | CM/L 0003436759 |
| CIN | U27203RJ1999PTC015812 |
| GSTIN | 33AAACH7775E1ZM |
| PAN | AAACH7775E |
Incorporated in Jaipur in 1999 to manufacture conductors, wires and cables. Manufacturing at Gummidipoondi, Tamil Nadu. Supplying the Tamil Nadu state power utilities continuously since 2009.
| Legal name | HM Aluminium Alloys Private Limited |
|---|---|
| CIN | U27203RJ1999PTC015812 |
| Date of incorporation | 9 August 1999 |
| Registrar | Registrar of Companies, Rajasthan, Jaipur |
| Registered office | 8/336 Vidhyadhar Nagar, Jaipur, Rajasthan 302023 |
| GSTIN | 33AAACH7775E1ZM (Tamil Nadu), effective 1 July 2017 |
| PAN | AAACH7775E |
Two units at the SIDCO Industrial Estate, Gummidipoondi, in Thiruvallur district, Tamil Nadu — about 50 km north of Chennai. Process, plant and output are set out on the Manufacturing page.
| Principal unit | Plot No. 39–40, Phase V, SIDCO Industrial Estate, Gummidipoondi 601201 |
|---|---|
| Second unit | Shed No. 4, Phase IV, SIDCO Industrial Estate, Gummidipoondi 601201 |
Two units at the SIDCO Industrial Estate, Gummidipoondi, Tamil Nadu. Both conductor lines run from 9.5 mm wire rod through to drummed, despatch-ready conductor, with in-house wire drawing, heat treatment, stranding and testing.
A visual introduction to stranding and conductor manufacture, supporting the verified process diagrams and plant layout below.
Each line is manufactured to the process approved under its BIS licence. The AAAC route carries two heat-treatment stages that ACSR does not: alloy 6201 develops its mechanical properties only through solution treatment followed by artificial ageing, and both are done on site.
A visual overview of the production journey. The detailed BIS-declared ACSR and AAAC flows remain directly below.
Process flows as declared to and verified by the Bureau of Indian Standards, 26 August 2025. Boxes on the right are quality checkpoints.
The plant diagram remains the technical reference, supported by the production-floor context shown alongside it.
Principal unit, Shed 39–40, Phase V. Redrawn from the plant layout verified by a Bureau of Indian Standards certification officer on 26 August 2025.
| Principal unit | Plot No. 39–40, Phase V, SIDCO Industrial Estate, Gummidipoondi 601201 |
|---|---|
| Second unit | Shed No. 4, Phase IV, SIDCO Industrial Estate, Gummidipoondi 601201 |
| Raw material | 9.5 mm aluminium wire rod (ACSR) and 9.5 mm aluminium alloy wire rod (AAAC) |
| Drawing | Wire drawing machine, rod to final wire size |
| Heat treatment | Solution treatment at 530 °C, ageing at 160 °C |
| Stranding | 24-bobbin stranding machine and 7-wire tubular stranding machine |
| Steel core | Steel spooling for ACSR core wire |
Capacity stated as delivered output rather than machine rating — every figure below is drawn from executed purchase orders.
Tonnage computed from delivered length and IS 398 nominal conductor mass. Years with no completion recorded are omitted.
The largest contract in the company's history — 2,869 km of AAAC Weasel, some 273 tonnes — was completed four days ahead of its scheduled date. The 2,000 km order completed in March 2026 landed exactly on schedule.
Two BIS product certification licences, both operative, held continuously for fifteen and sixteen years, covering the entire manufactured range.
IS 398 (Part 2) : 2025 — aluminium conductors, galvanized steel reinforced
IS 398 (Part 4) : 1994 — aluminium alloy stranded conductors, alloy 6201
IS 398 (Part 4) : 1994 is the third revision of that standard, reaffirmed in 2014 and current. IS 398 (Part 2) was revised in 2025 and this licence is held against that revision.
Search either CM/L number on the Bureau of Indian Standards public register at manakonline.in. The record returns licence status, the standard covered, factory location and validity dates directly from BIS.
Every batch is tested on site before despatch. The equipment below was declared under BIS Scheme I and verified in person by a Bureau of Indian Standards certification officer on 26 August 2025.
A laboratory visual introduces the detailed equipment and checkpoint tables below without replacing their technical content.
| Equipment | Least count and range | Calibrated | Instrument ID |
|---|---|---|---|
| Tensile testing machine | 0.02 – 500 kN | Yes | 123 |
| Micrometer | 0.01 mm · 0–25 mm | Yes | 10310110 |
| Digital micro-ohm meter | 0.01 mΩ | Yes | 3201 |
| Vernier caliper | 0.01 mm · 0–200 mm | Yes | A0430734 |
| Thermometer | 1 °C · −10 to 110 °C | — | — |
| Steel scale | 1 mm · 0–300 mm | — | — |
| Stage | Checks |
|---|---|
| Incoming wire rod | Tensile strength, diameter |
| After drawing — ACSR | Diameter, breaking load, wrapping test, resistance |
| After drawing — AAAC | Diameter, breaking load, elongation, resistance |
| After stranding | Compliance with IS 398 Part 2 or Part 4 as applicable |
Aluminium conductors, galvanized steel reinforced, manufactured to IS 398 (Part 2) under BIS licence CM/L 0003503344. Six constructions in regular production.
Product imagery now introduces the technical page visually; the exact constructions, dimensions and supply records remain in the data below.
A simplified engineering motif for visual orientation; detailed constructions and true relative-size cross-sections remain in the product data below.
Product pages now combine technical data with a stronger visual identity, while preserving the original IS 398 terminology and supply records.
| Conductor | Stranding | Aluminium area | Steel area | Total area | Overall dia. |
|---|
Mass per km, DC resistance at 20 °C and rated breaking load will be added once verified against the published standard.
All aluminium alloy stranded conductors in alloy 6201, manufactured to IS 398 (Part 4) under BIS licence CM/L 0003436759. The founding product line, in continuous supply since 2009.
| Conductor | Stranding | Aluminium area | Total area | Overall dia. |
|---|
Mass per km, DC resistance at 20 °C and rated breaking load will be added once verified against the published standard.
Continuous supply to the Tamil Nadu state power utilities since 2009 — 19,363 km across 35 purchase orders, with no liquidated damages recovered on any contract closed to date.
The visual complements the purchase-order history and kilometre totals documented below.
| Conductor | Orders | Quantity supplied | Supplying since |
|---|
Five purchase orders have been formally closed by TANTRANSCO. Across all five, total recovery was ₹1,636 — and that was a one-day delay in submitting a bank guarantee, not a supply delay. Every closure letter records liquidated damages for belated supply as nil.
| Purchase order | Conductor | Quantity | Closed | Penalty |
|---|---|---|---|---|
| POTR.2314 · 28.07.2012 | ACSR Panther | 50 km | 6 Apr 2023 | Nil |
| POTR.2484 · 27.01.2014 | ACSR Zebra | 40.204 km | 26 May 2022 | Nil |
| POTR.2503 · 21.02.2014 | ACSR Panther | 247 km | 14 Mar 2025 | Nil |
| POTR.2689 · 05.06.2015 | ACSR Panther | 195 km | 22 Nov 2022 | Nil |
| POTR.2819 · 29.04.2016 | ACSR Zebra | 95.663 km | 7 Feb 2025 | ₹1,636 |
Thirty-five purchase orders. No liquidated damages recovered on any contract closed to date.
Supply has been to the Tamil Nadu state power utilities throughout — the Tamil Nadu Electricity Board and its successor entities following the 2010 unbundling and the subsequent distribution demerger: TANGEDCO, TANTRANSCO and TNPDCL.
Enquiries, tender documentation and technical specifications — by telephone or email.
| Works | Plot No. 39–40, Phase V, SIDCO Industrial Estate, Gummidipoondi, Thiruvallur District, Tamil Nadu 601201 |
|---|---|
| Registered office | 8/336 Vidhyadhar Nagar, Jaipur, Rajasthan 302023 |
| Telephone | +91 86376 30108 |
| gjain@hmaluminium.in | |
| GSTIN | 33AAACH7775E1ZM |
| CIN | U27203RJ1999PTC015812 |
HM Aluminium Alloys Private Limited respects the privacy of visitors who use this website or contact the company through the details published on it.
Last updated: 17 September 2026
If you contact the company by telephone or email, you may voluntarily provide information such as your name, organisation, contact details and the contents of your enquiry. The website should collect only information reasonably required to respond to that communication.
Information received through business enquiries may be used to respond to requests, discuss products or supply requirements, maintain business correspondence, and meet applicable legal or regulatory obligations.
The current presentation is primarily informational. If the live website later uses hosting logs, analytics, cookies or similar technologies, this policy should be updated to describe the data collected, purpose, retention and available choices.
Business information should not be sold for advertising purposes. Information may be handled by service providers supporting website hosting, communications or business operations, or disclosed where required by applicable law.
Reasonable organisational and technical measures should be used to protect information. Business correspondence should be retained only for as long as reasonably necessary for the purpose for which it was received and for applicable legal or record-keeping requirements.
If this website links to external websites, their privacy practices are governed by their own policies. HM Aluminium Alloys Private Limited is not responsible for the content or privacy practices of third-party websites.
For questions about information you have provided to the company, contact HM Aluminium Alloys Private Limited using the published telephone number or email address below.
This page may be revised when the website, business processes or applicable requirements change. The latest version should show its effective or last-updated date on this page.
Email: gjain@hmaluminium.in
Telephone: +91 86376 30108
Works: SIDCO Industrial Estate, Phase V, Gummidipoondi, Tamil Nadu 601201