ISO 10893-4:2011 PDF

Non-destructive testing of steel tubes — Part 4: Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections

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Title (English):

ISO 10893-4:2011

Non-destructive testing of steel tubes — Part 4: Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: March 24, 2011
Edition:: ISO IS 10893 edition 1 version 1
ICS:: 23.040.10

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Description (English):

ISO 10893-4:2011 specifies requirements applicable to liquid penetrant testing of seamless and welded tubes for the detection of surface imperfections. It is applicable to all or any part of the tube surface as required by the relevant product standards. It can also be applicable to the testing of hollow sections.

Technical details

Technical committee: ISO/TC 17/SC 19 - Technical delivery conditions for steel tubes for pressure purposes
SKU: ISO 10893-4:2011

Abstract

Overview

ISO 10893-4:2011 specifies requirements for liquid penetrant inspection (LPI) of seamless and welded steel tubes to detect surface imperfections. It applies to all or part of tube surfaces as required by product standards and can also be used for hollow sections. The standard defines when and how penetrant testing should be carried out, the classification of indications, acceptance levels, and reporting requirements - making it a practical reference for NDT (non-destructive testing) of steel tubing.

Key topics and technical requirements

Scope & timing: LPI is normally performed after primary production operations (rolling, heat treatment, sizing, straightening, etc.).
Surface condition: Tubes must be clean and free from oil, grease, scale or contaminants that interfere with inspection.
Personnel qualifications: Operators must be trained and certified per ISO 9712, ISO 11484 or equivalent; NDT authorization and supervision are required.
Penetrant systems & techniques:
- Two detection techniques: colour‑contrast (visible) and fluorescent (UV).
- Three penetrant system types: water‑washable, post‑emulsifying, and solvent‑removable.
- Choice depends on surface condition and test category; stainless steels require low‑halogen, low‑sulfur materials.
Operational parameters:
- Typical application temperature range: 10 °C to 50 °C (procedures must be qualified if outside this range).
- Typical dwell time: manufacturer‑recommended, commonly 3–30 minutes.
- Rinsing/cleaning: water rinse under appropriate lighting with pressures around 200 kPa (2 bar) (max 350 kPa/3.5 bar); water temperature

Related standards

Mentioned in the description and other ISO standards

Overview

Key topics and technical requirements

Scope & timing: LPI is normally performed after primary production operations (rolling, heat treatment, sizing, straightening, etc.).
Surface condition: Tubes must be clean and free from oil, grease, scale or contaminants that interfere with inspection.
Personnel qualifications: Operators must be trained and certified per ISO 9712, ISO 11484 or equivalent; NDT authorization and supervision are required.
Penetrant systems & techniques:
- Two detection techniques: colour‑contrast (visible) and fluorescent (UV).
- Three penetrant system types: water‑washable, post‑emulsifying, and solvent‑removable.
- Choice depends on surface condition and test category; stainless steels require low‑halogen, low‑sulfur materials.
Operational parameters:
- Typical application temperature range: 10 °C to 50 °C (procedures must be qualified if outside this range).
- Typical dwell time: manufacturer‑recommended, commonly 3–30 minutes.
- Rinsing/cleaning: water rinse under appropriate lighting with pressures around 200 kPa (2 bar) (max 350 kPa/3.5 bar); water temperature

ISO 10893-4:2011 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

Related standards

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