About Us

The Sterling Group of Companies is a conglomerate with a history dating back to the late 1950s.

The Group has interests in the industries of Fasteners and Fabricated Components, Finance and Real Estate with a primary interest in the manufacturing and trading of “Fasteners and Fabricated Components” for Transmission Towers and Microwave Antennas.

The Group started its journey 4 decades ago with Sterling Enterprises, as a trading outlet of the then mother-company, Ferreous Forging Company.

Our Founder & Managing Director “Mr. Uma Shankar Agarwal” started his journey from Ferreous Forging, his family business, in 1976. The company had built a reputation in quality Hot-Forged Bolts in the size-range upto M36 alongwith 25mm dia Fish-Bolts for the Indian and Iraqi Railways. The company was one of the first to manufacture Metric-Dimensional Bolts in the country.

He expanded the business in the year 1986 with a company named Bharat Industries (Galv.), a galvanizing unit with the then latest technology of Centrifugal Galvanizing for quality fasteners. In the year 1997 Bharat Galvanizing became a private limited company with the name Star Galvanizers Pvt. Ltd. In 1996 he founded Sterling Bolts Pvt. Ltd. a forging unit of Bolts, Nuts and Fabricated items.

In the year 2008 he has stepped into financial business by opening Sterling Finvest Pvt. Ltd., an NBFC. In 2010 he has started Sterling Nirman Pvt. Ltd. as he has a vision of stepping into the Real Estate business.

In 2013, Star Galvanizers Pvt. Ltd. was merged with Sterling Bolts Pvt. Ltd. bringing all operations under one roof.


Sterling Bolts Private Limited has a 3-plant set-up in West Bengal at:

   a) Ankurhati, Domjur, Howrah,

    A plant dedicated to the procurement and stocking of all raw materials.

    It also has the processing capability of:

      1) wire drawing;

      2) rod drawing;

      3) shearing and cutting of rod bars, angles, channels and sheet items; and

      4) nut forging;

  b) Tentulkuli, N. H. 6, Howrah,

      1) forging and finishing all types of bolts;

      2) heat treatment for required alloy steel bolts, nuts and washers;

      3) welding of structural parts;

      4) tapping of galvanized nuts; and

      5) varied processes of finishing structural parts of relay antennas;

   c) Dasnagar, Howrah,

      Hot-dip galvanizing of all fasteners and various structural components.

   We have been manufacturing

      a) All Grades and High Tensile fasteners, both in black and hot-dip galvanized conditions;

      b) Fabricated items made of Mild Steel, Stainless Steel, Brass and Aluminum, especially for communication towers.

      c) Accessories like Foundation–Anchor bolts, Eye bolts and nuts, Shackles, U-bolts, Hooks and other items as per customer’s drawings.

Our production capacity altogether comes up to 600 MT per month.

Sterling products are made by modern processes including hot and cold forging, temperature controlled hot dip galvanizing with centrifugal system, and regular statistical quality control.

Our consumer base for fasteners includes clients from leading transmission tower manufacturers from all over the country (all Power Grid approved) and clients from countries like Australia, Thailand, Philippines, Sri Lanka, Middle East and Spain. Our clientele for communication fabrications includes France, Mexico, Scotland and the United States of America.

Sterling Bolts Pvt. Ltd. has emerged as one of the leading producers of quality fasteners and fabricated products.


Sterling products are manufactured in accordance with every major international standard in the world. The standards include ISO, DIN, AS, ASTM, BS, IS and JIS.

Additionally, Sterling Group also caters to individual customer requirements.

Another exclusive feature of the Sterling products is the wide range of finishes offered to the customer. Every product can be given any of the following four impeccable finishes:

      a) Natural (self color);

      b) Blackodized/Phosphated;

      c) Zinc Plated (blue and yellow); and

      d) Hot Dip Galvanized.

The meticulous packing process in bulk as well as small boxes offers total protection in transit and storage.

Fastener Range

Fabricated items


Quality at Sterling Bolt Pvt. Ltd has been The Reason For Growth And The Vehicle Of Future. We Are An ISO 9001-2008 Company.

We Have Also Been Awarded The CE Compliance Certificate

This Is Directly Under The Supervision Of The Top Management, Since Quality Control Is A Function Of An Independent Department Reporting Directly To The Management.

Quality Control

The Quality Policy Declared By The CompanyIs:

“We At Sterling Bolts Pvt Ltd Are Committed To Enhance Customer Satisfaction and Quality Management System”.

Keeping with the above Philosophy, the Quality Department has been assigned the following duties:

      a) Inspection Of Raw Material.

      b) Stage Inspections Under Different Manufacturing Process.

      c) Assisting External Inspection Agencies

      d) Maintenance Of Quality Documents.

We have our In-house Quality Control Department Equipped with the Latest Technology. A Quality Plan is Worked Out for Every Job Undertaken by Sterling BoltsPvt. Ltd. And Is Sent To The Client Immediately After The Contract is Awarded. The Client Is Welcome To Inspect The Quality At Any Point Of Manufacturing.

News & Updates

Labour Welfare Seminar in association with Tata Steel

Contact Us

Contact us on the details bellow or put your details in the simple form we will contact you.

You are most welcome to visit us or call us or drop and email to us.

  • Address: 1, Bonfield Lane, 1st Floor, Kolkata – 700001
  • Phone: +91-33-22429068
  • Fax: +91-33-22429050
  • Email: contact@sterlinggoc.com