WeldFab Tech
WeldFab banner

// International Institute of Welding

IIW / IWCertification

International welding qualifications and manufacturer certification to ISO 3834 and EN 15085.

IWE · IWT · IWS · IWPISO 3834 · EN 15085IIW harmonised syllabus
View certifications

// Overview

What is IIW / IW certification?

The International Institute of Welding runs a harmonised qualification system recognised by its member countries, so a diploma earned in India carries the same meaning abroad. The personnel route certifies people; the manufacturer route certifies companies.

For fabricators, ISO 3834 quality requirements and EN 15085 railway welding certification are increasingly written straight into tender conditions -- which makes them a commercial requirement as much as a technical one.

// Programmes

IIW & Manufacturer Certifications

Certification listings for this programme are being updated. Please enquire for the current list.

// The detail

Examination & certification process

01

Personnel Qualification Route

Four IIW diplomas sit on one ladder. Entry level depends on prior education and shop-floor experience.

  • IWE - International Welding Engineer: the full theoretical route, for engineering graduates taking responsibility for welding coordination.
  • IWT - International Welding Technologist: for diploma holders and technologists in welding supervision roles.
  • IWS - International Welding Specialist: for supervisors and inspectors with practical shop-floor experience.
  • IWP - International Welding Practitioner: the practical-track entry point.
02

Course Structure

All personnel courses follow the IIW harmonised syllabus, delivered in four parts and examined part by part.

  • Part 1 - Welding processes and equipment
  • Part 2 - Materials and their behaviour during welding
  • Part 3 - Construction and design
  • Part 4 - Fabrication, applications engineering and quality assurance
03

ISO 3834 - Quality Requirements for Fusion Welding

Certifies the manufacturer, not the individual. Three levels let a shop certify at the depth its work actually demands.

  • ISO 3834-2 - Comprehensive quality requirements, for pressure and safety-critical fabrication.
  • ISO 3834-3 - Standard quality requirements, the common structural-fabrication level.
  • ISO 3834-4 - Elementary quality requirements, for simple non-critical work.
  • Requires a responsible welding coordinator, qualified WPS/PQR, qualified welders and traceable records.
04

EN 15085 - Railway Vehicle Welding

The certification Indian Railways and rolling-stock suppliers ask for. Certification classes follow the safety category of the components being welded.

  • CL 1 - Full certification, including high-stress safety-relevant joints.
  • CL 2 - Components with medium stress and safety relevance.
  • CL 3 - Low-stress, low safety-relevance components.
  • CL 4 - Fabrication with no welded safety-relevant components.
05

Validity & Renewal

Both personnel diplomas and manufacturer certificates run on fixed cycles with surveillance in between.

CertificateCycle
IIW personnel diplomaLifetime award, with periodic proof of continued practice
ISO 3834 manufacturer certificate3 years, annual surveillance audit
EN 15085 manufacturer certificate3 years, annual surveillance audit
06

How WeldFab Tech Supports the Route

  • Gap assessment against the target standard before the certification body is engaged.
  • Welding coordinator support, WPS/PQR preparation and welder qualification planning.
  • Documentation and quality-system build-out for the audit.
  • Training for the shop team ahead of the surveillance audit.

Ready to get certified?

Tell us which programme you are aiming for and we will come back with the schedule, the fee and what you need to have ready.