Expert articles

Knowledge from the field

Planning a plant turnaround: how to staff a shutdown

In a turnaround or shutdown, staffing is often the bottleneck. How to plan welder and fitter headcount, certification, shifts and posting for peak manpower.

Aug 18, 2026 · 6 min read

Procurement & sourcing

How to choose a welding subcontractor: 6 things to check before you hire

A practical checklist for project managers and procurement: certification, safety, A1 posting, references, mobilization speed and documentation when choosing a welding subcontractor.

Aug 18, 2026 · 6 min read

Quality & standards

EXC3 vs EXC4: what the steel structure execution classes mean (EN 1090)

Execution classes EXC1–EXC4 under EN 1090 set how strict the requirements are for steel structures. What EXC3 and EXC4 demand, and why it matters when choosing a contractor.

Aug 18, 2026 · 5 min read

Safety & compliance

SCC and VCA: what these safety certificates are and why industrial sites require them

SCC and VCA are the same safety scheme in two languages. What they certify, the difference between a company and a personal certificate, and why petrochemical sites often require them.

Aug 18, 2026 · 5 min read

Procurement & sourcing

What drives the cost of a welding subcontractor (and how to compare offers fairly)

The day rate is not the whole cost. The factors that really drive the cost of a welding and assembly subcontractor — certification, mobilization, posting and productivity.

Aug 18, 2026 · 5 min read

Quality & standards

EN ISO 9606 and EN 287: what changed in welder certification

EN 287-1 for certifying steel welders was replaced by EN ISO 9606-1. What that means for certificate validity and what to check with a contractor.

Aug 18, 2026 · 5 min read

Posting & compliance

Werkvertrag or Arbeitnehmerüberlassung: how to legally engage foreign welding crews in Germany

Germany has two legal models for foreign crews: a works contract (Werkvertrag) and temporary agency work (Arbeitnehmerüberlassung, licensed). What the difference is and what it means for the client.

Aug 18, 2026 · 6 min read

Posting & compliance

Posting welders to Belgium: what Limosa and A1 mean

To post workers to Belgium, the Limosa declaration and the A1 certificate are key. What they are, why they are mandatory and how to stay compliant on your project.

Aug 18, 2026 · 6 min read

Quality & standards

EN ISO 9606: what a welder certificate means and why it is crucial for a project

Everything about EN ISO 9606-1 for welder certification — what it covers, how to check its validity and why it matters when choosing a contractor.

Jul 29, 2026 · 5 min read

Welding technique

MIG/MAG, TIG, MMA and SAW welding processes: when to use which

A practical guide to processes 111 (MMA), 135/136 (MAG), 141 (TIG) and SAW — advantages, materials and where they are used in industry.

Jul 28, 2026 · 6 min read

Posting & personnel

Posting workers in the EU: the A1 form, permits and what the client must know

A short guide to posting workers abroad — the A1 certificate, obligations, documentation and how the client reduces risk when choosing a contractor.

Jul 27, 2026 · 5 min read

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