Address : Plot No. 424,SIDCO Industrial Estate,Ambattur,
Chennai – 600 098, India
Call Us : +91-9840930370
Mail Us :
Office Time : Mon-Sat 9.30AM-6PM

About Us


We “Precision Controls” (under the brand name “PRECONS”) provides end to end customized solutions including design, manufacture, erection and commissioning of industrial furnaces,oven,kilns and various special equipment.

Company profile
PRECONS is an accredited brand name in India since 1971 as design and manufacturer of Heat Treatment Furnaces for strategic core sectors, special chemical plants and thermal equipments for nuclear and atomic sectors, dedicated equipments and special thermal plants for composite materials, satellite components testing vacuum chambers, specialized equipments for aerospace industries, etc.
PRECONS Industrial Furnaces and Ovens are “Custom Built” to meet the modern day, specialised requirements of Industry, by combining the well proven designs and modern techniques, at the forefront of the latest technologies, with modern Furnace designs and solutions to meet the Specifications and Standards of the Aircraft, Automotive, Nuclear and Engineering Industries.
PRECONS understand the customer’s requirements very clearly from all angles and supply the equipments to the respective sites, erect, commission and demonstrate the equipments to their full satisfaction and also train their personnel for effective utilization of the systems.
PRECONS has received special quality award appreciation mementos from Department of Space, Atomic Energy, etc and has gained excellent reputation in the industrial heat treatment field.
PRECONS provides a host of after sales services to help the equipment customers have running smoothly, more efficiently, and with better product quality. Whether it’s spare parts or a complete furnace upgrade or retrofit, we have the resources to provide you with top-notch services such as
  • - Upgrading or replacing your current control system.
  • - Adding or changing your equipment design.
  • - scheduled maintenance.
  • - furnace inspections & equipment evaluations.

Strengths of PRECONS :
The technological strength is based on engineering design and technical experience gained in the past and with special emphasis to its experienced and dedicated technical staff.
PRECONS furnaces are performing commendably in diverse sectors such as auto/auto ancillaries, heavy & medium engineering, aerospace, nuclear, metal industries such as steel / aluminium, electrical/electronics, etc.
Equally impressive is our range of applications that include atmospheric / non-atmospheric and continuous / batch types. PRECONS can proudly claim to be the pioneer and market leader in the bell annealing furnace design of domestic origin and has to its credit more than 150 installations with about 250 bases in India and abroad. PRECONS has developed 30T bell annealing furnace, the largest ever attempted by an Indian manufacturer.
Commitment to Customer:
  • Precons has supplied more than 5100 furnaces/equipment during the last four decades & all of them were successfully handed over to the customers(not even one customer left). Our commitment to customer s’ satisfaction can be easily seen from the repeat orders list.
Financial Discipline:
  • Precons & its group of companies has never experienced cash loss balance sheet in their operation for last 4 decades.
Proper Financial management.:
  • By proper financial management , Mr Shankar the owner & founder has successfully commissioned 39 wind mills (having a capacity of 11.55 Mega Watt) starting from 1995 to 31st March 2016 in Mirra & Mirra Industries and Opulent group companies in gradual face.
  • Now Opulent group is adding another 16 wind mills (having a capacity of 3.6 MW) in 2016-2017.
  • Thus 55 wind mills having a capacity of 15.15 MW will contributing to green energy production to our country.


Users of PRECONS furnaces /special equipment should be globally spread.

PRECONS customers should enjoy trouble free, cost effective, quality oriented output.

PRECONS brand name for industrial furnaces should be internationally reckoned with.


Sustained efforts to supply quality furnaces to the full satisfaction of customers.

Repeated technological up-gradation will be done on a routine basis.

Customer interaction & feedback will be taken as valid inputs for technological up-gradation in our furnaces.


User friendly, cost effective with latest technical up-gradation at affordable cost to produce quality output from our furnaces to the fullest satisfaction of our customers.

Company History

Mr. Shankar Srinivasan, a mechanical engineer from Regional Engineering College, Warangal {now National Institute of Technology (NIT)} & postgraduate (M.Tech) from IIT -Madras, after gaining a few years of industrial experience, has established “Precision Controls” (brand name “PRECONS”) a family owned partnership firm for manufacture of small industrial furnaces & industrial ovens at SIDCO Industrial Estate,Ambattur, Chennai-600 098 in 1973 (43 years ago). From there on a steady growth has been witnessed.




First large pit type furnace supplied to Department of Space


A direct technical interaction with Dr A.P.J.Abdul Kalam ,our former president of India when he was a director of Satellite Launch Vehicle for supply of Electromagnetic interference (EMI)Chamber at Thumba, Trivandram.


Precons was responsible to initiate a public notice for reduction of custom duty from 320% to 40% adveleram for ceramic fiber blocks(PYRO BLOCK) widely used in furnaces in place of refractory thus saving huge energy either electrical ,gas or oil from Mr Pranab Mukherjee ,then finance minister and present President of India .


Indigenously developed the first bell furnace to work under nitrogen atmosphere for India’s top auto fasteners manufacturing industry at Chennai.
Indigenously developed rotary tube furnaces to M/s. Nuclear Fuel Complex, Department of Atomic Energy for processing of uranium oxide powder.


Entered into technical tie-up with M/s. Lanley Inc. USA for manufacture of high precision aluminium solution treatment and ageing furnaces for use in aerospace industry commission at HAL, Bangalore.


Triple vacuum chamber successfully commissioned at Liquid Propulsion Systems Centre (LPSC), Mahendragiri, Tirunelveli district, for testing of satellite components under simulating conditions and inaugurated by Dr. Krishnaswamy Kasturirangan, Chairman of ISRO.
Mr.Shankar as a Managing Director of the Company received “UDYOG PATRA AWARD” in 1993. This award was given by the Government of India in recognition of his status as a successful self-made industrialist.


“Mirra and Mirra Industries” a proprietorship firm was founded by Mr Shankar for wire rod conversion to cold forge auto component manufacturers like Sundram Fasteners Limited(SFL) ,Tubes India(TI) and a number of companies in and around Chennai.


A number of rotary tube furnaces for certain treatments to uranium oxide material to be further processed as Nuclear fuel, commissioned at Nuclear Fuel Complex (NFC), Hyderabad. Special furnaces for handling Nuclear waste and glove box type furnaces to radio metallurgy dept.Bhabha Atomic Research Centre(BARC) were supplied and had direct appreciative interaction with Dr Anil Kakodkar, former chairman of A.E.C (Atomic Energy Commission) at BARC, Mumbai. Obtained ISO 9001 QMS certification.


Asia’s largest vacuum chamber for the purpose of Electron Bream Welding facility was successfully commissioned and inaugurated by Dr. Madhavan Nair, Chairman of ISRO at Hindustan Aeronautics Limited (HAL) Aerospace, and Bangalore.


Successfully commissioned Asia’s largest vacuum chamber and vacuum pumping system suitable for electron beam welding facility for LPSC,Dept. of Space Bangalore commission at HAL aerospace division Bangalore. Since many strategic equipment were successfully supplied by PRECONS to Aerospace and Dept.of atomic energy of India, US government put “Precision Controls” under “Embargo” list along with 200 companies in India including L&T, Godrej and many Govt. establishments. Subsequently after intervention from Indian government, the embargo was lifted in 2002. This shows the extent of name & reputation gained by “PRECONS” by supplying prestigious strategic equipments to Dept of Space & Dept of Atomic energy.


Developed indigenously continuous hardening and tempering line furnace for auto components.


Commissioned successfully the first large 100 ton capacity LPG fired box type heating furnace to M/s. Bay Forge Ltd. (A group company of FOMAS, Italy).


Udyog Patra award was presented by Institute of Trade and Industrial Development to Mr.Shankar, Managing Director for successful self made industrialist.
Exported transformer core annealing furnaces to Bangladesh.


Export turnover crossed Rs 10 millions (US $ 250,000) Exported bell type transformer core annealing furnaces to Crompton Greaves USA.
India’s largest & first of its kind indigenously developed 30T capacity bell type wire rod annealing furnace was successfully supplied and commissioned at Mirra and Mirra Industries. Chennai.
Commissioned a large Ageing Heat Treatment Furnace at Indonesian Aerospace Ltd with quality of acceptance as per AMS 2750D and CASA 1036.


Dr Madhavan Nair then Chairman of Dept. of Space gave away mementos as a best furnace manufacture in 2007 at a function organized by Bay Forge Ltd. 1st large 8T Gas Fired Continuous Discharge Furnace was inaugurated in 2007 at BHEL,Trichy by Jairam Ramesh,Union minister for Heavy Engineering Industries & Public Enterprises. Bagged large valued contracts from single customer and the total value crossed Rs 150 millions for supply of High precession 80 MT ,60 MT heat treatment furnaces.


Turnover Crossed Rs 230 millions. Supplied the first 1200 Kg/hr Continuous hardening and tempering furnace line for fasteners.


Exported Transformer core annealing furnace to Thailand. Commissioned successfully LPG fired Bar Hardening and Tempering Furnaces at Malaysia.


Witnessing 2 decades of successful wire rod conversion activities to TVS group & others and after understanding the reputation of sister concern “Mirra and Mirra Industries” ,Toyota group companies along with their associates in Japan totally bought over “Mirra and Mirra Industries Pvt.Ltd.” after rigorous DD actives from KPMG,PWC and J Sagar