Building a Sustainable Future: Scaffolding, ERW Tubes, and the Impact of CBAM
Author : Monish Roy | Published On : 30 Jul 2026
Introduction
For years, sustainability in construction meant choosing the right materials on-site. In 2026, it also means understanding a regulation most contractors have never had to think about before: the EU's Carbon Border Adjustment Mechanism (CBAM). If your supply chain touches steel imports into Europe — directly or through a supplier several steps removed — this regulation now affects your costs.
This article connects three things that don't usually appear in the same conversation: scaffolding, ERW tubes, and CBAM. Scaffolding and ERW tubes are two of the most steel-intensive products on any construction site. CBAM is the policy now determining how the carbon footprint behind that steel gets priced. Understanding how they intersect isn't optional anymore for procurement teams working across borders.
By the end, you'll know what CBAM actually requires, how it touches steel products like ERW tube and scaffolding components, and what practical steps to take regardless of whether you import directly or buy from a domestic supplier.
What Is CBAM, in Plain Terms?
CBAM (Carbon Border Adjustment Mechanism) is an EU regulation that puts a carbon price on certain imported goods — including iron and steel — to match the carbon price EU-based producers already pay under the EU's Emissions Trading System (ETS). In simple terms: if a product was made with high carbon emissions outside the EU, the importer now pays a comparable cost to what an EU manufacturer would have paid.
The goal is to prevent "carbon leakage" — a situation where companies shift production to countries with looser emissions rules just to avoid EU carbon costs, without actually reducing global emissions.
CBAM's Timeline So Far
- October 2023 – December 2025: Transitional phase. Importers had to report embedded emissions data quarterly, but didn't yet pay anything.
- January 1, 2026: <cite index="2-1">CBAM entered its definitive period, meaning importers began paying for embedded emissions using CBAM certificates.</cite>
- February 2027: <cite index="1-1">CBAM certificate sales begin through the EU's common central platform.</cite>
Important Note: <cite index="6-1">Only importers above a mass threshold — currently 50 tonnes of CBAM-covered goods per year — are obligated to surrender certificates.</cite> Smaller importers may fall under a simplified exemption, but should confirm their status directly rather than assuming they're excluded, since thresholds and rules have already been revised once and may change again.
Which Products Does CBAM Cover?
CBAM currently covers cement, iron and steel, aluminium, fertilisers, and electricity and hydrogen.</cite> Steel is not a minor category here — <cite iiron and steel accounted for the large majority of covered import volumes, roughly 98% of initial volumes recorded in the first reporting window of 2026. That makes CBAM, for practical purposes, largely a steel-trade regulation.
How CBAM Touches ERW Tubes Specifically
ERW tubes (Electric Resistance Welded tubes) are steel tubes formed by rolling flat steel strip into a cylindrical shape and welding the seam using electrical resistance heat. They're used extensively in structural framing, scaffolding tube stock, fencing, and utility lines — which makes them one of the most commonly traded steel product categories affected by CBAM.
Why This Matters for ERW Tube Buyers and Sellers
If ERW tube (or the HR coil/strip used to make it) is manufactured outside the EU and imported into an EU country, the importer now needs to:
- Obtain verified embedded emissions data from the producer, ideally third-party verified
- Compare that data against EU default values — which are generally set higher than real EAF-route emissions figures to avoid underestimation
- Purchase and surrender CBAM certificates corresponding to the emissions gap, once the definitive period's certificate-purchasing obligations apply from 2027
Pro Tip: <cite index="2-1">To use actual emissions data instead of the EU's default values, producers must undergo third-party verification, including an on-site audit in the first year.</cite> If you're an ERW tube manufacturer selling into the EU, starting this verification process now — rather than waiting — avoids being locked into higher default-value costs once certificate purchases begin.
EAF vs. Blast Furnace Route: Why It Affects CBAM Cost
CBAM benchmarks differ based on production route, including for electric arc furnace (EAF) produced steel versus other methods, specifically to avoid outcomes where certain production routes would face little to no obligation.</cite> In practice, this means ERW tube made from EAF-route steel (using recycled scrap) generally carries a lower embedded emissions profile than tube made via the traditional blast furnace route — which can translate into a lower CBAM certificate cost for EU importers.
Scaffolding's Less Obvious Connection to CBAM
Scaffolding itself — the temporary steel structure used to access buildings under construction — isn't a finished good that typically crosses EU borders in the same way as raw steel or tube. But the steel tube and coupler components used to build scaffolding systems often are.
Where the Overlap Happens
- Steel tube used in tube-and-coupler scaffolding is frequently ERW tube, meaning it falls under the same CBAM-covered category
- Couplers, base plates, and other cast or forged steel components may also carry embedded emissions data requirements if imported into the EU
- Scaffolding rental companies sourcing new stock from non-EU manufacturers will increasingly see this reflected in unit pricing
What This Means for Scaffolding Buyers and Renters
| Scenario | CBAM Relevance |
|---|---|
| Buying/renting scaffolding domestically within the EU | Indirect — supplier's steel sourcing costs may already reflect CBAM if their raw material was imported |
| Importing scaffolding tube/components into the EU from a non-EU manufacturer | Direct — importer may need to report and eventually pay for embedded emissions |
| Sourcing scaffolding entirely outside the EU for a non-EU project | Not directly affected, but worth monitoring as CBAM's scope has already expanded once |
Important Note: <cite index="1-1">The EU has proposed expanding CBAM's scope to include additional product categories and steel-intensive downstream goods from 2028.</cite> Scaffolding components sit close enough to core steel categories that a scope expansion could eventually bring more of them into direct coverage — worth tracking even if you're not affected today.
Data Snapshot: CBAM's Steel Footprint and Cost Exposure
Chart suggestion 1 — Pie or donut chart: "CBAM-Covered Import Volumes by Sector, Early 2026," showing iron and steel's dominant share relative to cement, fertilisers, aluminium, and electricity/hydrogen. Based on early reporting data, <cite index="3-1">iron and steel represented about 98% of initial CBAM-covered import volumes, with fertilisers at roughly 1.2% and the remaining sectors making up a small residual share</cite> — a chart here would make clear just how steel-dominated CBAM's real-world impact is, at least in its first weeks.
Chart suggestion 2 — Line chart: "EU ETS Allowance (EUA) Price Trend, 2023–2026," since <cite index="2-1">CBAM cost exposure is directly linked to EU ETS dynamics, and EUA prices rose sharply in 2025 and are expected to increase further as CBAM enters its definitive phase</cite>. This chart would help readers understand that CBAM certificate costs aren't fixed — they move with the EU carbon market, so budgeting a static number is risky.
(Note: Source exact volume percentages and EUA price data from the European Commission's Taxation and Customs Union CBAM reporting portal and EU ETS market data providers before publishing, as these figures update frequently during CBAM's early rollout.)
Case Study: An ERW Tube Exporter Adapts Early
A mid-sized ERW tube manufacturer exporting to several EU-based scaffolding and construction distributors spent the 2023–2025 transitional period treating CBAM as a reporting formality, submitting quarterly emissions data without changing production processes. When the definitive period began in January 2026, the company faced a choice: accept the EU's higher default emissions values, or invest in third-party verification of its actual EAF-route emissions data.
The decision: The manufacturer commissioned a third-party audit, verified its actual emissions figures, and began supplying that verified data to EU customers alongside standard product documentation. Because their EAF-route production carried genuinely lower emissions than the EU's conservative default values, verified customers' CBAM certificate costs came in noticeably lower than they would have under default assumptions.
Outcome: The manufacturer used its verified low-emissions profile as a competitive advantage in customer conversations, particularly with EU buyers trying to manage their own CBAM exposure. Competitors still relying on default values found their tube less price-competitive once certificate costs were factored in.
Practical Steps for Construction Sector Buyers
Whether you're buying ERW tube, scaffolding components, or general structural steel, these steps apply broadly:
- Ask suppliers about production route — EAF (recycled scrap) generally means lower embedded emissions than blast furnace production.
- Request emissions documentation, even if you're not the direct EU importer — the data often needs to travel through the whole supply chain.
- Don't assume domestic sourcing means no CBAM exposure — if your domestic supplier imports raw steel or semi-finished product from outside the EU, CBAM costs may already be built into your price.
- Monitor scope expansion announcements — CBAM's coverage has already grown once and is proposed to grow further into steel-intensive downstream goods.
- Budget for EUA price volatility — since CBAM certificate costs track the EU carbon market, not a fixed rate.
Conclusion
CBAM is no longer a future concern for the construction sector — it's an active cost factor as of its definitive period in 2026, and it reaches further into everyday materials like ERW tubes and scaffolding components than many buyers initially assumed. Understanding your supply chain's production route, requesting verified emissions data, and tracking CBAM's expanding scope are no longer optional exercises for sustainability teams — they're now procurement basics.
Start by asking your current steel suppliers one direct question: is your product made via EAF or blast furnace route, and can you provide verified emissions data? The answer will tell you more about your CBAM exposure — and your genuine sustainability position — than any marketing material will.
Frequently Asked Questions
1. Does CBAM apply to companies outside the EU? CBAM's legal obligation falls on EU importers, but it directly affects non-EU manufacturers because those importers need verified emissions data from their suppliers to avoid higher default-value costs. In practice, non-EU producers exporting to the EU need to engage with CBAM even though they don't pay the certificates themselves.
2. When do CBAM certificate payments actually start? The definitive period, including the obligation to surrender certificates, began January 1, 2026, but certificate sales through the EU's central platform start in February 2027, giving companies a transition window to prepare their data and verification processes.
3. Is scaffolding itself directly subject to CBAM? Not typically as a finished structure, but the steel tube and components used to build scaffolding systems — particularly ERW tube — often fall under CBAM's iron and steel category when imported into the EU.
4. What's the difference between using default values and actual emissions data under CBAM? Default values are EU-set conservative estimates that generally overstate real emissions to avoid underreporting, while actual emissions data — once third-party verified — often results in lower, more accurate costs, particularly for EAF-route producers.
5. Will CBAM's scope expand beyond current sectors? The EU has proposed expanding CBAM to cover additional product categories and steel-intensive downstream goods starting in 2028, so companies in steel-adjacent industries should monitor this even if they're not directly covered today.
