Leenstra
Leenstra BV is a Dutch industrial firm providing robotic and manual welding services for complex steel components to manufacturing clients, and manufacturing construction and production hall clamps for the hollow-core slab industry. Founded in 1926 and based in Drachten, it operates as a privately held, bootstrapped business.
- Company typePrivate
- Founded1926
- HeadquartersDrachten, Netherlands
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Leenstra does
Leenstra BV is a privately held Dutch industrial company founded in 1926 and headquartered in Drachten, Netherlands, operating two distinct business divisions under a single entity. The first division provides welding services to the manufacturing industry, comprising serial-based robotic welding of complex steel components up to 8 by 3 metres (with automated weld joint detection that compares the weld seam against a theoretical model before welding) and project-based manual welding for single pieces and small series where dimensional tolerances are critical. The second division manufactures and sells construction equipment for the hollow-core slab construction industry, including construction clamps and production hall clamps featuring an automatic locking mechanism that the company describes as unique on the market.
The company's go-to-market is B2B sales-led, with named sales contacts for welding (Gerrit Prikken) and clamps (Floris Kuntz) and a Director (Taco Mulder) overseeing clamp operations. Customers are manufacturers outsourcing welding operations and construction firms handling hollow-core slabs; the welding proposition is positioned around relieving customer pain from skilled-welder scarcity, while the clamp proposition emphasizes safety (no clamp-failure accidents reported in over 20 years), durability, and certified inspection via an online customer portal. Geographic reach for clamps extends across 10+ European countries plus Australia and the Baltics, while welding appears to be primarily Netherlands-focused.
Leenstra holds ISO 9001, EN ISO 3834-2, NEN-EN 1090-1, and NEN 3834 certifications, and operates as a bootstrapped, family-oriented business with no disclosed institutional investors or external funding. Effective January 1, 2025, the company divested sales and inspection of its lifting keys and fall protection product lines to Van der Blij B.V. in Oss, narrowing its product portfolio to focus on welding services and its core construction and production hall clamp lines.
Leenstra firmographics
Firmographics- Name
- Leenstra
- Legal name
- Leenstra BV
- Website
- https://leenstra.nl
- Company type
- Private
- Founded year
- 1926
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Leenstra BV is a Dutch industrial firm providing robotic and manual welding services for complex steel components to manufacturing clients, and manufacturing construction and production hall clamps for the hollow-core slab industry. Founded in 1926 and based in Drachten, it operates as a privately held, bootstrapped business.
- Ownership category
- akta.pro rank
Leenstra industry classification
Industry- Product category
- Metal Fabrication and Welding Services
- NAICS
- Welding and Soldering Equipment Manufacturing (333992)
- SIC
- Miscellaneous Fabricated Metal Products (3490), Special Industry Machinery, Nec (3559)
- akta.pro primary industry
- Welding, Fabrication & Field Machining Services (On-site) (IMAIACAD)
- akta.pro secondary industry
- Welding, Joining & Soldering Equipment (Arc, Resistance, Friction, Brazing) (IMAHADAH)
Keywords
Where Leenstra is headquartered
LocationHeadquarters
- HQ city
- Drachten
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
Leenstra business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Infrastructure, Supply Chain, Marketing or Sales
Revenue model
- Welding services: Serial-based and project-based welding services for complex steel constructions in manufacturing industry
- Construction clamps and lifting equipment: Manufacturing and sales of construction clamps, production hall clamps, lifting keys, and fall protection equipment for hollow-core slab handling. Note: Sales and inspection of lifting keys transferred to Van der Blij B.V. as of January 1, 2025.
Go-to-market motion2 records
Distribution channels2 records
Marketing channels3 records
Leenstra product offering
Product offeringCore offering
Leenstra BV provides welding services for the manufacturing industry, including serial-based robotic welding and project-based manual welding of complex steel constructions where dimensional tolerances are critical. In parallel, the company designs, manufactures and supplies specialised construction clamps and lifting equipment (construction clamps, production hall clamps) for safe handling of hollow-core slabs in the construction industry. Both lines are delivered as B2B offerings under EN ISO 3834 and EN 1090 quality certifications.
Product overview
Leenstra is a Dutch welding and lifting equipment company operating two core divisions: welding services and construction clamps. The welding division offers serial-based robotic welding (for complex components up to 8x3 metres) and project-based manual welding (for single pieces and small series). The clamps division manufactures specialised lifting equipment for hollow-core slab construction, including construction clamps with automatic locking mechanisms, production hall clamps, lifting keys, and fall protection anchor points. A client portal provides customers access to certificates and test reports. As of January 2025, sales and inspection of lifting keys and fall protection products were transferred to Van der Blij B.V.
Differentiator
Problem solved
Functional benefit
Brands
- Leenstra Clamps: Specialized clamps for lifting hollow-core slabs, including construction clamps, production hall clamps, and storage yard clamps for the prefabricated concrete construction industry.
- Leenstra Lifting Keys
- Leenstra Valbeveiliging
Products and services
- Serial-based welding (Seriematig lassen)
Quantifiable outcome
- No accidents reported in over 20 years where clamp failure was identified as cause
- +2 more outcomes
Companies that use Leenstra
Customer profileSegments3 records
Ideal customer profiles2 records
Leenstra technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Leenstra partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Van der Blij B.V.coreSales and inspection of lifting keys transferred to Van der Blij B.V. in Oss as of January 1, 2025. Van der Blij is a one-stop shop supplier for prefabricated products and lifting technology. Leenstra continues to handle original certificates for past purchases through their customer portal.
Scale indicators4 records
Recent moves7 records
Expansion highlights4 records
Leenstra competitors and assessment
Company assessmentDirect peers
- SpanSet: European manufacturer of lifting and load-securing equipment, including safety-critical lifting devices. Comparable to Leenstra's clamp business for hollow-core slab handling and construction lifting safety.
- Hankamp: Dutch machining and metalworking specialist providing precision metal components. Comparable to Leenstra's contract manufacturing profile in the Netherlands with similar B2B manufacturing customers.
- Boikon: Dutch industrial metal fabrication and welding company serving manufacturing and construction markets. Directly comparable to Leenstra as a Netherlands-based welding job shop with serial and project welding capabilities.
- Modulift: UK-based manufacturer of modular lifting equipment and spreader beams. Comparable to Leenstra's specialized lifting equipment for construction materials handling and industrial lifting applications.
- Wuppermann: Dutch-German steel processing and metal fabrication company. Comparable to Leenstra's steel construction and metal fabrication services for industrial customers in Northwestern Europe.
Broad incumbents
- ABUS Kransysteme: German manufacturer of crane systems and lifting equipment. Comparable to Leenstra's clamp and lifting equipment business as an established incumbent in the European construction lifting equipment market.
- Consolis: European precast concrete specialist and historical partner of Leenstra (the Leenstra Consolis brand name suggests past affiliation). Comparable as the broader industry context for hollow-core slab construction where Leenstra's clamps are deployed.
- Konecranes: Finnish global leader in lifting equipment and crane services. Comparable as a broad incumbent in the same lifting equipment and material handling market where Leenstra's clamp products compete.
- VDL Groep: Large Dutch industrial conglomerate with significant metalworking and welding operations across multiple divisions. Comparable as a broader industrial player providing welding and metal fabrication services to European manufacturing customers.
- Demag: Established German manufacturer of industrial cranes and lifting equipment. Comparable as a broad incumbent in the lifting equipment market where Leenstra's specialized construction clamps compete.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Leenstra social profiles
Digital presenceLeenstra compliance and trust
Trust signalCompliance5 records
Leenstra financial estimates
Financial estimateRevenue estimate
Valuation estimate
Leenstra leadership team
Management profileNumber of profiles
Profiles4 records
Leenstra funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Leenstra M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Leenstra
What does Leenstra do?
Leenstra BV provides welding services for the manufacturing industry, including serial-based robotic welding and project-based manual welding of complex steel constructions where dimensional tolerances are critical. In parallel, the company designs, manufactures and supplies specialised construction clamps and lifting equipment (construction clamps, production hall clamps) for safe handling of hollow-core slabs in the construction industry. Both lines are delivered as B2B offerings under EN ISO 3834 and EN 1090 quality certifications.
Is Leenstra a public or private company?
Leenstra is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Leenstra founded?
Leenstra was founded in 1926. It employs 51 to 100 people.
Where is Leenstra based?
Leenstra is headquartered in Drachten, Netherlands, in the Europe region.
How does Leenstra make money?
Two revenue lines are on record. Welding services are the primary driver. The others are construction clamps and lifting equipment.
Who are Leenstra's main competitors?
Direct peers on record are SpanSet, Hankamp, Boikon, Modulift and Wuppermann. Broad incumbents are ABUS Kransysteme, Consolis, Konecranes, VDL Groep and Demag.
Does Leenstra have an API?
No public API is recorded for Leenstra.
What industry is Leenstra in?
Leenstra's product category is Metal Fabrication and Welding Services. Its primary akta.pro industry code is IMAIACAD, Welding, Fabrication & Field Machining Services (On-site), with a secondary code of IMAHADAH, Welding, Joining & Soldering Equipment (Arc, Resistance, Friction, Brazing). Its NAICS code is 333992 and its SIC code is 3490.