Shanker Wire Products Industries

What Shanker Wire Products Industries does

Shanker Wire Products Industries (SWPI) is an Indian precision calibration weights manufacturer founded in 1961 in Deoghar, India, capitalizing on India's 1958 adoption of the metric system. The company designs and manufactures test and standard weights spanning 50 grams to 1,000 kilograms in multiple forms (hexagonal, rectangular, cylindrical, slotted, roller, bell, proportional, avoirdupois, and fabricated configurations), using cast iron, pig iron, brass, and mild steel as base materials. Core technical differentiators include proprietary adjusting cavity designs sealed with lead plugs for long-term mass stability, and compliance with OIML R-111, R-47, R-52, BIS, B.O.T., S.A.B.S., N.S.C., and A.S.T.M. specifications.

SWPI operates an in-house NABL-accredited calibration laboratory under ISO/IEC 17025:2017, providing traceable calibration services for weights from 1 mg to 1,000 kg, with a stated Calibration Measurement Capability of 6.102g in M1 accuracy for a 1,000 kg weight. Revenue is generated through two streams: one-time hardware sales of precision weights, and recurring NABL calibration services. Distribution is direct and quote-based, with no public pricing, executed through the company website, email, and phone. The company exports to 42+ countries across North America, Europe, the Middle East, Asia-Pacific, and Africa, serving calibration laboratories, pharmaceutical firms, industrial manufacturers, government legal metrology departments, and research/educational institutions. SWPI has been OIML-recognized as a certified cast iron weight supplier since 1973 and contributed to revisions of OIML guidelines R-47 and R-52. The company appears to be privately held by the Singhania family, with no disclosed external investors, subsidiaries, or M&A activity.

Name

Shanker Wire Products Industries

Legal name

Shanker Wire Products Industries

Website

https://weights-swpi.com

Company type

Private

Founded year

1961

Operating status

Operating

Headcount range

11–50 employees

Short description

Shanker Wire Products Industries is an Indian manufacturer of precision calibration and test weights (50g to 1,000kg) operating an NABL-accredited calibration laboratory, exporting directly to 42+ countries for calibration labs, pharma, industrial, and government legal metrology customers.

Ownership category

akta.pro rank

Product category

Precision Calibration Weights Manufacturing

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Other Measuring and Controlling Device Manufacturing (334519)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734)

akta.pro primary industry

Weighing & Force Measurement (Load cells, scales, torque, strain measurement) (IMAGAFAF)

akta.pro secondary industry

Calibration Services & Standards (Calibration labs, reference standards, traceability services) (IMAGAFAH)

Keywords

• Precision calibration weights
• Test weights manufacturing
• Standard weights supplier
• OIML calibration weights
• Weighbridge calibration

Headquarters

HQ city

Deoghar

HQ country

India

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Calibration Weights Sales: Sale of precision test weights, standard weights, and calibration weights manufactured from cast iron, pig iron, brass, and mild steel. Products range from 50g to 1000kg in various forms including hexagonal, rectangular, cylindrical, slotted, roller, bell, proportional, and avoirdupois weights. Revenue is generated through direct sales to calibration labs, pharmaceutical companies, industrial manufacturers, government agencies, and research institutions worldwide.
2. Calibration Services: NABL accredited calibration services for test weights and weighing balances, covering weight range from 1mg to 1000kg. Includes F1 Class Precision Weights calibration (1mg to 200g), M1 Class Standard Weights calibration (500g to 50kg), and M1 Class High-Capacity Weights calibration (100kg to 1000kg). Calibration certificates provide traceability to national and international standards.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Shanker Wire Products Industries (SWPI) manufactures and sells precision calibration and test weights ranging from 50g to 1000kg in multiple forms (hexagonal, rectangular, cylindrical, slotted, roller, bell, proportional, avoirdupois) using cast iron, pig iron, brass, and mild steel. The company also operates a NABL-accredited calibration laboratory providing traceable calibration services for test weights from 1mg to 1000kg under ISO/IEC 17025:2017.

Product overview

Shanker Wire Products Industries (SWPI) is a precision calibration weights manufacturer and NABL accredited calibration laboratory. The company offers a comprehensive portfolio of calibration weights spanning multiple product lines: Test Weights (rectangular, hexagonal, and cylindrical shapes ranging from 50g to 1000kg), Standard Weights (100kg to 1000kg in various configurations), Slotted Weights with Hangers (100g to 20kg and 1N to 200N), Roller Weights (200kg to 500kg), Bell Weights (5g to 500g), Proportional Weights (100:1 and 50:1 ratios), Avoirdupois Weights (1/4 lb to 56 lb), and Fabricated Weights (100kg to 1000kg). Products are complemented by NABL accredited calibration services covering weights from 1mg to 1000kg. All products comply with international standards including OIML R-111, OIML R-47, OIML R-52, BIS, B.O.T, and S.A.B.S specifications.

Differentiator

Problem solved

Functional benefit

Products and services

• Test Weights Rectangular Shape (Model No. 187) Heavy-duty rectangular calibration weights manufactured in denominations from 500 kg to 1000 kg for calibration of heavy-duty weighing machines, made from high-quality pig iron with smooth surface finish for stacking.
• Standard Weights (100 kg to 1000 kg) Standard weights in rectangular and cylindrical shapes for calibration of industrial weighing machines, weighbridges, and large-scale instruments, manufactured from durable cast iron with corrosion-resistant coating.
• Slotted Weights with Hanger (Model No. SWPI: 87-93) Precision slotted weights designed for pressure, torque, and tensile strength testing with range from 100 g to 20 kg and 1 N to 200 N, with mild steel hangers.
• Roller Weights (Model No. SWPI: 168-170) Heavy-duty roller weights in 200 kg, 250 kg, and 500 kg denominations for calibration of high-capacity weighing machines, with mild steel handle for crane lifting and rolling transportation.
• Cylindrical Weights Schengener States (Model No. SWPI: 171-176) Precision cylindrical weights from 100 g to 10 kg complying with international standards for laboratory calibration, research institutions, and industries requiring highly accurate measurements.
• Test Weights Hexagonal Shape (Model No. SWPI: 137-145) Precision hexagonal test weights from 100 g to 20 kg conforming to OIML R-52 standards, manufactured from high-quality pig iron in truncated hexagonal pyramid shape for stability.
• Bell Weights (Model No. SWPI: 47) Precision bell-shaped weights from 5 g to 500 g handcrafted from high-quality brass with shiny smooth finish, used for calibration and verification of weighing instruments.
• Proportional Weights (Model No. SWPI: 136) Counterpoise weights for Platform Weighing Machines available in ratios of 100:1 and 50:1, manufactured from premium Pig Iron with protective black paint coating.
• Avoirdupois Weights Weights manufactured according to traditional British measurement standards, denominations from 1/4 lb to 56 lb for trade verification and calibration, made from cast iron.
• Cylindrical Test Weights (Model No. SWPI: 5-17) Cylindrical shape precision calibration weights from 100 g to 10 kg fully complying with OIML R 111-1:2004 for verification and calibration of weighing instruments.
• Cylindrical Standard Weights with Handle (Model No. SWPI: 26-27(b)) Cylindrical standard weights from 100 kg to 1000 kg for calibration of high-capacity weighing machines per OIML R-47, with mild steel handle for crane lifting and rolling.
• Hexagonal Test Weights 5kg to 50kg (Model No. SWPI: 48-51) Heavy-duty hexagonal test weights from 5 kg to 50 kg per BIS and GCC Countries standards, with cast-in mild steel handle and rectangular loading hole sealed with lead.
• Rectangular Test Weights 5kg to 20kg (Model No. SWPI: 18-20) Rectangular test weights from 5 kg to 20 kg per B.O.T. recommendation, made from high-quality pig iron with adjusting cavity at bottom sealed with pure lead.
• Rectangular Test Weights 500kg to 1000kg (Model No. SWPI: 187) Heavy-capacity rectangular test weights in 500 kg and 1000 kg denominations per S.A.B.S. recommendation for calibration of heavy-duty weighing machines.
• Rectangular Standard Weights 100kg to 1000kg (Model No. SWPI: 26-27(a)) Standard weights from 100 kg to 1000 kg per OIML R-47 Recommendation for calibration of high-capacity weighing machines, with water-tight adjusting cavity and crane-lift compatible design.
• Cylindrical Standard Weights Rolling 100kg to 1000kg (Model No. SWPI: 26-27(d)) Heavy-duty cylindrical standard weights from 100 kg to 1000 kg per OIML R-47 Recommendation, with rounded edges for convenient handling and movement.
• Forklift & Crane Test Weights (Model No. SWPI: 26-27(c)) I-shaped standard weights from 100 kg to 1000 kg per OIML R-47 for calibration of high-capacity weighing machines, suitable for forklift and crane lifting with stackable design.
• Fabricated Standard Weights (Model No. SWPI: 181-183) Mild steel fabricated standard weights filled with molten cast iron from 100 kg to 1000 kg, with channel and lifting handle for forklift and crane lifting.
• Fabricated Standard Weights Stacking (Model No. SWPI: 189) Fabricated standard weights from 100 kg to 1000 kg with cubical cavity for forklift lifting and four legs for stacking, with Allen screw sealed adjusting cavity.
• Avoirdupois Weights 1/4 to 4lb (Model No. SWPI: 125-133) Avoirdupois weights from 1/4 ounce to 4 pounds with brass construction for lighter weights and cast iron for heavier denominations, produced to buyer-specified error limits.
• Avoirdupois Weights 7lb to 56lb (Model No. SWPI: 60-63) Avoirdupois weights from 7 lb to 56 lb for industries and laboratories using imperial system, made from cast iron with protective coating.
• NABL Accredited Calibration Services NABL accredited calibration services for test weights and weighing balances, covering weight range from 1mg to 1000kg with F1 Class Precision Weights, M1 Class Standard Weights, and M1 Class High-Capacity Weights calibration.

Quantifiable outcome

• Calibration Measurement Capability (CMC) of 6.102g in M1 accuracy for 1000kg weight - one of the best in India
• +2 more outcomes

Named customers9 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Indian Foundry AssociationminorOthersSWPI is a member of the Indian Foundry Association, demonstrating commitment to quality manufacturing standards in the foundry industry and access to industry resources and networking.

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• HBK (Hottinger Brüel & Kjær): HBK provides industrial test and measurement solutions including force calibration standards and weighing technology, adjacent to SWPI's force/weight calibration product set for industrial and laboratory applications.
• Sartorius: Sartorius is a leading global supplier of laboratory balances and bioprocessing equipment with associated calibration weight offerings, competing with SWPI in pharmaceutical and research lab calibration segments.
• Mettler Toledo: Mettler Toledo is a global leader in precision instruments including laboratory balances and certified calibration weights — overlapping with SWPI's calibration weight and balance calibration service offering across pharma, lab, and industrial segments.
• Avery Weigh-Tronix: Avery Weigh-Tronix (an ITW company) is a long-established industrial scale and weighing equipment manufacturer, overlapping with SWPI in industrial and commercial weighing calibration applications.

Direct peers

• Cardinal Scale Manufacturing: Cardinal Scale manufactures industrial scales, weighbridges, and associated calibration weights, competing with SWPI in industrial floor scale and weighbridge calibration weight markets.
• Troemner: Troemner (a Spectris company) is a US-based manufacturer of precision calibration weights and mass standards directly competing with SWPI in laboratory and industrial calibration markets, including OIML-compliant weight sets.
• Rice Lake Weighing Systems: Rice Lake is a US manufacturer of weighing equipment and calibration weights (including test weight sets up to 5000 lb), serving industrial and laboratory calibration customers globally — directly overlapping SWPI's standard weight portfolio.
• Lab Logistics Group: Lab Logistics Group distributes calibration weights, NIST-traceable mass standards, and laboratory calibration supplies in the US and internationally — a comparable channel-led competitor to SWPI's direct-export model.
• Kern & Sohn: Kern & Sohn is a German manufacturer of precision balances and test weights (noted in SWPI's customer testimonials as a buyer) with OIML-compliant calibration weight sets that compete head-to-head with SWPI's products in European and global markets.

Regional players

• Inscale: Inscale is a UK-based supplier of industrial weighing scales and calibration equipment, competing with SWPI in European and UK calibration weight markets through online channels.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/SwpiWire
• LinkedInlinkedin.com/company/shanker-wire-products-industries

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Shanker Wire Products Industries