Combulex
Combulex is a Dutch specialist supplier of steel pipes for civil engineering (GWW), offering foundation piles, casing pipes, screw injection piles, and tapered pipes with proprietary in-house processing. A subsidiary of Van Leeuwen Buizen Groep since 2014, it serves construction contractors and infrastructure owners across the Netherlands and Western Europe.
- Company typePrivate
- Founded1967
- HeadquartersZwijndrecht, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Combulex does
Combulex is a Dutch specialist distributor and processor of steel pipes and tubes for the Ground, Road and Water Construction (GWW) sector, operating as a wholly-owned subsidiary of Van Leeuwen Buizen Groep since 2014. Its core product set includes steel pipe piles (stalen buispalen), tapered pipes (getrompte buizen), casing pipes (mantelbuizen), and screw injection piles (schroefinjectiepalen). The company's primary technical differentiators are proprietary in-house capabilities: a proprietary conical trapezoid block thread for screw injection piles (described as the most copied thread in the market) and an owned tromping (flaring) machine that enables fast, flexible production of tapered pipes. Material processing services (sawing up to 530mm diameter, thermal cutting up to 1220mm, welding, and flaring from 76.1mm to 406.4mm) are performed in-house, supporting both stock and custom orders.
The business operates on a hardware-sales revenue model with quote-based pricing, a minimum order value of €500, and a stated 2-hour quote response on working days. GTM is conducted through website quote forms, phone/email, and content marketing (knowledge articles on pipe applications), with delivery handled by Combulex's own specialized freight fleet across the Netherlands and extendable to France, Germany, the UK, and Belgium. The company serves construction contractors, infrastructure owners (ProRail, Rijkswaterstaat, Waterbedrijf Evides), corporate buyers (Van Leeuwen), and projects across foundation, cable protection, harbor, and concrete cooling applications. Its customer base is anchored to Dutch infrastructure and civil engineering projects, with 20,000+ tons of steel pipe inventory held at a centrally located Vianen warehouse to support immediate delivery.
Combulex firmographics
Firmographics- Name
- Combulex
- Legal name
- Combulex
- Website
- https://combulex.com
- Company type
- Private
- Founded year
- 1967
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Combulex is a Dutch specialist supplier of steel pipes for civil engineering (GWW), offering foundation piles, casing pipes, screw injection piles, and tapered pipes with proprietary in-house processing. A subsidiary of Van Leeuwen Buizen Groep since 2014, it serves construction contractors and infrastructure owners across the Netherlands and Western Europe.
- Ownership category
- akta.pro rank
Combulex industry classification
Industry- Product category
- Steel pipe products for civil engineering
- NAICS
- Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (33121), Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (331210), Fabricated Pipe and Pipe Fitting Manufacturing (332996)
- SIC
- Steel Pipe & Tubes (3317), Sheet Metal Work (3444)
- akta.pro primary industry
- Pipe & Tube Manufacturing (Seamless & Welded OCTG/Line Pipe/Structural Tube) (IMAKABAI)
- akta.pro secondary industry
- Pipes & Tubing (Metal, Plastic & Composite) (IMADALAC)
Keywords
Where Combulex is headquartered
LocationHeadquarters
- HQ city
- Zwijndrecht
- HQ country
- Netherlands
- HQ region
- Europe
Offices2 records
Markets served
Combulex business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Infrastructure, Personnel
Revenue model
- Steel Pipe Sales: Combulex generates revenue through the sale of steel pipes and tubes, including standard and custom-sized products. Customers purchase pipes for various construction applications including foundation piles, cable protection, harbor development, and infrastructure projects. Revenue is generated through one-time transactions with quote-based pricing. The company also performs custom modifications (cutting, welding, flaring) as value-added services included in product orders.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Standard steel pipes for GWW applications |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
Combulex product offering
Product offeringCore offering
Combulex supplies and processes steel pipes and tubes for civil engineering (GWW) projects, including foundation piles (buispalen), casing pipes (mantelbuizen), screw injection piles (schroefinjectiepalen), tapered pipes (getrompte buizen), revetment and quay pipes, culvert and mooring piles, and concrete cooling pipes. The company maintains 20,000+ tons of stock, provides certified materials, and performs in-house processing (sawing, burning, welding, flaring) and custom manufacturing.
Product overview
Combulex is a specialist supplier of steel pipes for civil engineering (GWW - Grond-, Weg- en Waterbouw), operating as part of the Van Leeuwen Buizen Groep since 2014. The core product portfolio centers on foundation piles: stalen buispalen (steel pipe piles) as the primary product, complemented by mantelbuizen (casing pipes) for cable protection, schroefinjectiepalen (screw injection piles) for vibration-dampened foundations, and getrompte buizen (tapered pipes) for deep foundation applications. Additional specialized products include stalen buizen voor beschoeiing (revetment pipes), duikers en aanmeerpalen (culverts and mooring piles), and betonkoelingsbuizen (concrete cooling pipes). The product range extends to general steel pipe trading through Van Leeuwen, including verzinkte buizen (galvanized pipes), gelaste ronde buizen (welded round pipes), naadloze ronde buizen (seamless round pipes), and stalen kokerprofielen (steel square profiles). Combulex differentiates through material processing capabilities (sawing, burning, welding, tapering) and custom manufacturing services. The company holds NEN building certifications and supplies all products with certificates.
Differentiator
Problem solved
Functional benefit
Products and services
- Stalen buispalen (Steel Pipe Piles) Steel pipe piles (also called trumpet pipes or tapered pipes) used as foundation piles for construction projects with limited workspace conditions. Built from segments of steel pipes of 2-3 meters that are often tapered (tromped) for easy stacking. Designed for construction companies and contractors in civil engineering.
- Mantelbuizen (Casing Pipes) Steel casing pipes (also called cold protection pipes) pushed through roads to install conduits or PVC pipes underneath. Used in civil engineering for roads, intersections, fields, and canals. Engineered to last at least 50 years with only 1mm wall thickness corrosion per 10 years.
- Schroefinjectiepalen (Screw Injection Piles) Screw injection piles (also called micro piles) that are vibration-dampened and screwed into the ground. Developed with a proprietary conical trapezoid thread for high transfer capacity, leak-free joints, and ease of processing. This thread has become the most copied thread in the screw injection pile market.
- Getrompte buizen (Tapered Pipes) Tapered pipes (trompen) designed to fit into each other during pile driving, featuring a wider end at the top for seamless stacking. Made with own tromping machine in dimensions Ø76.1mm to Ø406.4mm with max wall thickness 10mm. Used in civil engineering for deep foundation applications.
- Stalen buizen voor beschoeiing en kadeverbetering (Steel Pipes for Revetment and Quay Improvement) Steel pipes used for steel dam wall revetment for bank protection or quay improvement, protecting against erosion and wave action. Often combined with Prolock plastic sheeting systems.
- Stalen buizen voor duikers en aanmeerpalen (Steel Pipes for Culverts and Mooring Piles) Large welded steel pipes used for culverts and fabrication of mooring piles that protect docks and vessels during berthing. Used in harbor and marina development.
- Betonkoelingsbuizen (Concrete Cooling Pipes) Steel cooling pipes for concrete curing, standard 6m long with 28mm or 54mm outer diameter and 1.5mm wall thickness, including necessary press couplings. Used for controlling thermal cracking during large concrete pours in infrastructure projects.
- Faunabuizen (Fauna Tunnels) Steel tunnels installed under roads for wildlife crossing, originally for badgers but also used by frogs, toads, hedgehogs, martens, rabbits, and hares. Used in civil engineering and road construction projects with ecological requirements.
- Materiaalbewerkingen (Material Processing Services) Custom steel pipe processing services including sawing (up to Ø530mm diameter), burning/thermal cutting (up to Ø1220mm diameter), welding (including lifting eyes and foot plates for pipe piles), and tromping/flaring (Ø76.1mm to Ø406.4mm diameter, max wall thickness 10mm). Offered to construction companies for customized pipe solutions.
- Maatwerk (Custom Manufacturing) Custom steel pipe manufacturing solutions with cutting to size (up to Ø813mm diameter) and burning for larger diameters, using own in-house processing capabilities for flexibility in meeting project specifications.
Quantifiable outcome
- Delivery of quote within 2 hours on working days
- +2 more outcomes
Companies that use Combulex
Customer profileNamed customers5 records
Segments5 records
Ideal customer profiles5 records
Combulex technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Combulex partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Van Leeuwen Buizen Groep (Van Leeuwen Pipe and Tube Group)coreVan Leeuwen Buizen Groep is the parent company of Combulex since 2014. Combulex remains the specialist for pipes for Ground, Road & Water Construction (GWW), while Van Leeuwen handles other pipe applications including fencing, horticulture, galvanized pipes, and general steel tube commerce. Combulex uses Van Leeuwen's purchasing power and network while maintaining its specialized focus.
Scale indicators3 records
Recent moves8 records
Expansion highlights5 records
Combulex competitors and assessment
Company assessmentBroad incumbents
- Vallourec: Global leader in premium seamless steel pipe and tubes for energy, construction, and industrial markets. Comparable as a manufacturer/distributor of steel pipe products serving infrastructure and construction customers, though at vastly greater scale and with energy-industry focus.
- Tenaris: Major global manufacturer and supplier of steel pipes for energy, construction, and industrial applications. Comparable product category (steel pipe manufacturing and distribution) with significant overlap in the construction/infrastructure customer base, though more energy-focused.
- ArcelorMittal Tubular Products: Division of ArcelorMittal producing welded and seamless steel tubes and pipes for construction, infrastructure, and energy markets. Comparable in product category and infrastructure customer overlap, though at vastly larger scale.
- Tubacex: Spanish-based manufacturer of seamless steel tubes for industrial and energy applications. Comparable as a specialist steel pipe producer with similar value-added processing capabilities and focus on serving infrastructure/industrial customers.
- Salzgitter AG: German steel and tubes group operating Mannesmann line pipe and structural tube divisions. Comparable as a major European steel pipe manufacturer serving construction, infrastructure, and energy markets with overlap in product portfolio.
- Voestalpine Stahlrohre: Austrian steel group producing welded and seamless steel tubes for construction, infrastructure, and industrial applications. Comparable product category and customer overlap in European civil engineering markets.
- Van Leeuwen Buizen Groep: Combulex's parent company and the broader Dutch/European pipe distribution group that handles non-GWW applications including galvanized, seamless, and square profile pipes. Operates the same steel pipe categories across adjacent end-markets with a much larger international footprint, providing both group context and direct comparable in product/operations.
Direct peers
- Stalatube Oy: Finnish manufacturer of structural stainless steel tubes and pipes for construction and infrastructure applications. Comparable as a European specialist steel tube manufacturer focused on construction/infrastructure segments with value-added processing.
- Stahlwerk Annahütte: German manufacturer specializing in steel piles, anchoring systems, and screw injection piles for foundation engineering. Direct comparable in the screw injection pile / micro pile product category that Combulex serves, with overlapping customer base in civil engineering.
Regional players
- Bauer Pile Driving Equipment: German specialist foundation equipment manufacturer providing piling rigs and ground engineering solutions. Comparable in the foundation/infrastructure pile segment where Combulex supplies pipe piles and screw injection piles, though as equipment rather than pipe supplier.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Combulex social profiles
Digital presenceCombulex compliance and trust
Trust signalCompliance1 record
Combulex financial estimates
Financial estimateRevenue estimate
Valuation estimate
Combulex leadership team
Management profileNumber of profiles
Combulex funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Combulex 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 Combulex
What does Combulex do?
Combulex supplies and processes steel pipes and tubes for civil engineering (GWW) projects, including foundation piles (buispalen), casing pipes (mantelbuizen), screw injection piles (schroefinjectiepalen), tapered pipes (getrompte buizen), revetment and quay pipes, culvert and mooring piles, and concrete cooling pipes. The company maintains 20,000+ tons of stock, provides certified materials, and performs in-house processing (sawing, burning, welding, flaring) and custom manufacturing.
Is Combulex a public or private company?
Combulex is a private company. It is classified as corporate owned and is currently operating.
When was Combulex founded?
Combulex was founded in 1967. It employs 11 to 50 people.
Where is Combulex based?
Combulex is headquartered in Zwijndrecht, Netherlands, in the Europe region.
How does Combulex make money?
One revenue line is on record: steel Pipe Sales.
Who are Combulex's main competitors?
Broad incumbents on record are Vallourec, Tenaris, ArcelorMittal Tubular Products, Tubacex, Salzgitter AG, Voestalpine Stahlrohre and Van Leeuwen Buizen Groep. Direct peers are Stalatube Oy and Stahlwerk Annahütte. Bauer Pile Driving Equipment is listed as a regional player.
Does Combulex have an API?
No public API is recorded for Combulex.
What industry is Combulex in?
Combulex's product category is Steel pipe products for civil engineering. Its primary akta.pro industry code is IMAKABAI, Pipe & Tube Manufacturing (Seamless & Welded OCTG/Line Pipe/Structural Tube), with a secondary code of IMADALAC, Pipes & Tubing (Metal, Plastic & Composite). Its NAICS code is 33121 and its SIC code is 3317.