About — H R Steel Industries Pvt. Ltd. | Infrastructure, Plant & Machinery

Our Story

Precision fasteners, engineered since 1990

H R Steel Industries Pvt. Ltd. is a complete-range manufacturer of industrial fasteners, headquartered at Sankrail Industrial Park, Howrah, West Bengal. The business has operated since 1990 — originally as a proprietorship — and was brought under the private limited company for manufacturing operations in 2023.

We manufacture HSFG bolting assemblies, lock bolts & collars, axle end cap screws, hex bolts, nuts, and plain & spring washers across cold forging (up to M30) and hot forging operations (above M30), with integrated heat treatment, hot dip galvanizing, zinc electroplating and zinc phosphate coating.

Production is governed by IS, IRS, ASTM and DIN standards and certified to ISO 9001:2015. We hold three active RDSO approvals and are a long-standing PGCIL-approved supplier of hot dip galvanized fasteners.

1990

Manufacturing since

Manufacturing units · Sankrail

2,500 MT

HSFG capacity per annum

Team members on rolls

Our Purpose

Fastening India's future, bolt by bolt

Our Vision

To be India's most trusted name in high-strength fasteners — engineering every bolt, nut and washer to carry the nation's railways, bridges and power grids safely forward, for generations to come.

Our Mission

To deliver precision-forged, fully traceable fasteners that meet the most demanding RDSO, PGCIL and international standards — backed by in-house NABL testing, dependable capacity and partnerships built on trust and on-time delivery.

Years of expertise

Manufacturing units

HSFG capacity / year

Approvals & certificates

PrecisionIntegritySafetyReliabilityContinuous Improvement

Our Infrastructure

Built for quality & scale

State-of-the-art facilities equipped with imported machinery and partnerships with leading global manufacturers such as National and San Shing.

Two Units

Unit I for cold & hot nut forging; Unit II for wire processing, bolt forging, heat treatment & surface coating.

Imported Machinery

Multi-station forging lines from San Shing (Taiwan), National (USA/Germany), Sakamura (Japan) and GB Header (UK).

NABL-Accredited Lab

In-house Physical & Chemical lab accredited to ISO/IEC 17025:2017 with 40T UTM and a German spectrometer.

Plant & Machinery

Inside our two units

An integrated chain across two units — forging, wire processing, heat treatment, threading and surface finishing, all in-house.

Unit I — Forging & Nuts

Multi-station cold nut forging — San Shing (Taiwan) & National (USA/Germany)
Hot forging presses up to 200 MT (above M30)
Tapping & hydraulic roll-threading up to M80
In-house spring-washer manufacturing

Unit II — Bolts, HT & Coating

Cold bolt forging — Sakamura (Japan), GB Header (UK), National
Wire drawing & pointing, trimming, roll-threading
Heat treatment — shaker hearth, mesh-belt, rotary & pit furnaces
Surface coating — HDG, zinc plating, zinc phosphate

In-house Capacity

HSFG bolting — 2,500 MT / year
Hot dip galvanizing — 25 MT / day
Zinc plating 10 · zinc phosphate 15 MT / day
NABL lab — ISO/IEC 17025:2017

View Full Plant & Machinery List →

Testing Facilities

NABL-accredited in-house laboratory

Our Physical & Chemical Testing Laboratory is accredited by NABL to ISO/IEC 17025:2017, giving third-party traceability to every test report we issue.

Mechanical Testing

Universal Testing Machine — 40 Tonne
Impact Testing Machine
Cantilever Testing Fixture
Proof Load Extension Measurement Fixture

Hardness & Chemistry

Digital Rockwell Hardness Tester
Rockwell Hardness Tester
Spectrometer — Germany

Metallography

Microscope with Image Analyser
Surface Grinding Machine
Surface Polishing Machine

See NABL Certificate & Scope

Quality You Can Trace

End-to-End Traceability

Every consignment can be traced back to its raw-material heat number — from incoming steel to the test certificate that ships with your order.

Raw material colour-coding — incoming wire rod and bar are segregated and colour-coded by SAE grade (SAE 1008, 1010, 1018, 1022, 10B33, 10B21, 15B25, 4140 / 41Cr4).
Heat-number marking — each bar carries its heat / cast number, retained through forging so finished lots map to a specific steel heat.
NABL-traceable testing — mechanical & chemical results are issued from our ISO/IEC 17025:2017 accredited in-house laboratory.
Batch tagging & dispatch — every bag and box carries an HRSIPL packing tag with grade, size, lot and order reference for full despatch traceability.