ISO 10893-10:2011

Overview

ISO 10893-10:2011 defines requirements for automated, full-peripheral ultrasonic testing (UT) of seamless and welded steel tubes (excluding submerged arc-welded - SAW) to detect longitudinal and/or transverse imperfections. The standard covers shear-wave UT (conventional or phased-array) and allows Lamb wave testing for longitudinal defects at the manufacturer's discretion. It is applicable to tubes with outside diameter ≥ 10 mm (normally with OD-to-thickness ratio ≥ 5) and can be used for circular hollow sections.

Keywords: ISO 10893-10:2011, non-destructive testing, ultrasonic testing, shear wave, phased array, Lamb wave, steel tubes, longitudinal defects, transverse defects.

Key topics and technical requirements

• Test method: Automated full peripheral scanning using ultrasonic shear waves; Lamb waves permitted for longitudinal inspection. Scans must cover the whole tube surface with controlled relative movement (speed variation ±10%).
• Probe/array requirements: Limits on transducer/active aperture widths (typical maxima: 25 mm; up to 35 mm for Lamb or phased-array use). Frequency ranges: shear-wave transducers 1–15 MHz; Lamb wave 0.3–1 MHz (dependent on tube condition and thickness).
• Direction of testing: Typically two opposite sound propagation directions (clockwise/anticlockwise for longitudinal; forward/backward for transverse).
• Calibration & reference tubes: Use reference tubes with calibrated notches (N- or V-type) matching nominal diameter, thickness, surface finish and acoustic properties of production tubes. Notch dimensions and acceptance-level criteria are specified; internal notches may be waived for very small internal diameters.
• Equipment capability: Systems must classify tubes as acceptable or suspect using automated trigger/alarm levels and provide marking/sorting.
• Personnel & timing: Testing performed after primary production operations. Operators must be qualified per ISO 9712, ISO 11484 or equivalent; NDT level‑3 oversight and employer authorization required.
• Ancillary requirements: Addresses untested ends and special cases (Annex B) and testing for low OD-to-thickness ratios (Annex A).

Applications

• Routine quality control and final inspection of seamless and welded steel tubes used in pressure systems, structural applications, pipelines, and general manufacturing.
• Inline automated inspection in tube mills and finishing lines for early detection of longitudinal and transverse imperfections, reducing rework and ensuring product conformity.
• Acceptance testing for purchaser-specified inspection levels and for suppliers demonstrating compliance with NDT requirements.

Who should use this standard

• Tube manufacturers and quality managers
• NDT technicians and Level 3 supervisors
• Inspection/third-party testing organizations
• Procurement/specification engineers and purchasers requiring verifiable UT inspection of steel tubes

Related standards

• ISO 10893 series (Parts 1–12) for other tube NDT methods
• ISO 5577 (UT vocabulary), ISO 9712 and ISO 11484 (NDT personnel qualification)

This summary helps procurement, inspection teams and manufacturers implement automated ultrasonic tube inspection aligned with ISO 10893-10:2011.