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How to hire homologated welders in Spain without getting burned

Technical criteria, mandatory paperwork and frequent pitfalls when hiring UNE-EN ISO 9606 and AWS welders for industrial sites and shutdowns in Spain.

Published on April 10, 2026 · Iron Pulse Team

How to hire homologated welders in Spain without getting burned

Spain carries a structural shortfall of homologated welders. The workload in Tarragona, Cartagena, Huelva and Puertollano far outstrips local supply, and hiring carelessly is costly: rework, delays and lost contracts. Here is the list of what cannot fail when hiring welders in Spain.

1. UNE-EN ISO 9606 or AWS homologation in force

The starting point is a valid UNE-EN ISO 9606 certificate for the site's process, position and material, with EN 1090 where there is structural work. Typical validity: 3 years with six-month confirmation. Always demand a copy issued by an accredited body.

2. Employment status and paperwork in order

Social Security registration, a contract under the applicable metal-sector collective agreement and, for non-EU professionals, an NIE and work authorization; for intra-EU postings, the A1 form. Confirm the staffing company is up to date on its payments.

3. Real industrial experience, not bench work

Welding a coupon is nothing like welding 6G pipework twelve meters up in a stopped refinery. Ask for references from past shutdowns and, if possible, the contact details of welding inspectors who signed off their work.

4. PRL and PPE up to date

Specific occupational-risk (PRL) training —working at heights, confined spaces, electrical risk—, a valid occupational medical check and proper PPE (auto-darkening hood, leather apron, spats). Without a preventive resource and this paperwork, the inspector keeps the worker out.

5. Contract clauses with no ambiguity

Who covers lodging, travel, consumable PPE and overtime? Who is liable if the welder walks off mid-shutdown? Vague contracts always end in a mid-project dispute.

The pitfalls that recur most

  • Expired homologation or the wrong process (135 when the job needs 141).
  • Opaque subcontracting — the supplier does not even know who is on the scaffold.
  • No civil-liability cover and no preventive resource.
  • Slow mobilization — four weeks to replace a welder during a shutdown is an eternity.

When a staffing partner is the right call

If the job is short, urgent or peaky, using a specialized personnel-provision company beats opening internal roles. Iron Pulse keeps an active pool of UNE-EN ISO 9606 and AWS welders ready to mobilize within 48-72 hours.

Meet our homologated welders or talk to the team about your next project.

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