Overview
EN ISO 10893-2:2011 - "Non-destructive testing of steel tubes - Part 2" specifies requirements for automated eddy current testing of seamless and welded (except submerged arc‑welded, SAW) steel tubes for the detection of imperfections. The standard applies to tubes with an outside diameter ≥ 4 mm and can also be applied to hollow sections. It defines test techniques, equipment, calibration, personnel qualification and reporting needed to detect surface and near-surface defects according to specified acceptance levels.
Key topics and technical requirements
- Scope and applicability
- Covers automated eddy current inspection of seamless and welded tubes (SAW excluded).
- Applicable to tube OD ≥ 4 mm; also suitable for hollow sections.
- Test techniques
- Concentric coil technique - full peripheral scanning (OD limit: 180 mm; 250 mm for E4H).
- Fixed or rotating probe / pancake coil technique - full peripheral scanning using probe movement or electronic commutation.
- Segment coil technique - weld seam only or full body inspection.
- Relative test speed must not vary by more than ±10%.
- General requirements
- Tubes to be tested after completion of production processes (rolling, heat treatment, sizing, straightening).
- Surfaces must be sufficiently clean and tubes sufficiently straight to ensure valid results.
- Calibration and reference standards
- Use of reference tubes (containing calibrated defects such as notches) for equipment calibration and checking.
- Requirements for reference standard dimensions and calibration procedures are specified.
- Personnel and competence
- Operators must be qualified in accordance with ISO 9712 or ISO 11484 (or equivalent) and authorized by employer procedures; NDT Level 3 supervision required for authorization.
- Acceptance and reporting
- Acceptance levels are provided (see Tables 1 and 2 of the standard); formal test reporting requirements are defined.
- Limitations
- Annex A gives guidance on method limitations (e.g., sensitivity to defect orientation, depth).
Applications
- Quality control during manufacture of steel tubes for pressure, structural and industrial use.
- Inline automated inspection in tube mills for detection of cracks, laps, pits and weld seam defects.
- Inspection of hollow structural sections where eddy current methods are suitable.
- Used by manufacturers, inspection bodies and end‑users specifying NDT acceptance for supplied tubes.
Who should use this standard
- Tube manufacturers and quality engineers
- NDT practitioners and inspection service providers
- Procurement and engineering teams specifying acceptance criteria for steel tubes
- Certification and compliance professionals in steel industry supply chains
Related standards
- ISO 9712 - Qualification and certification of NDT personnel
- ISO 11484 - Employer’s qualification system for NDT personnel
- Other parts of EN ISO 10893 series (Parts 1, 3–12) covering complementary NDT methods for steel tubes
Keywords: EN ISO 10893-2:2011, eddy current testing, non-destructive testing, NDT, steel tubes, automated eddy current, seamless and welded tubes, reference tube, acceptance levels.
