The tubes are free from external and internal surface defects, that can be detected by visual examination
Normative References:
EN10002-1, Metallic materials-Tensile testing- Part 1: Method of test(at ambient temperature).
EN10002-5, Metallic materials-Tensile testing- Part 5: Method of testing(at elevated temperature).
EN10020, Definitions and classification of grades of steel.
EN10021, General technical delivery requirements for steel and iron products.
EN10045-1, Metallic materials-Charpy impact test-Part 1: Test method
EN10052, Vocabulary of heat treatment terms for ferrous products.
EN 10204, Metallic products - Types of inspection documents
EN10027-1, Designation systems for steels - Part 1: Steel names, principle symbols.
EN10027-2, Designation systems for steels - Part 2: Numerical systems.
EN10220, Seamless and Welded steel tubes - Dimension and masses per unit length
EN10233, Metallic materials - Tubes - Flattening test
EN10234, Metallic materials - Tubes - Drift expanding test
EN10236, Metallic materials - Tubes - Ring expanding test.
EN10237, Metallic materials - Tubes - Ring tensile test
EN10246-1, Non-Destructive Testing of steel tubes Part 1: Automatic electromagnetic testing of
seamless and welded (except submerged arc welded) ferromagnetic steel tubes for
verification of hydraulic leaktightness
EN10246-5, Non-Destructive Testing of steel tubes - Part 5: Automatic full peripheral magnetic
transducer /flux leakage testing of seamless and welded( except submerged arc-welded)
ferromagnetic steel tubes for the detection of longitudinal imperfections.
EN10246-6, Non-Destructive Tesing of steel tubes - Part 6: Automatic full peripheral ultrasonic tesing
of seamless steel tubes for the detection of transverse imperfections
EN10246-7, Non-Destructive Tesing of steel tubes - Part 7: Automatic full periheral ultrasonic tesing
of seamless steel tubes for the detectin of longitudinal imperfections
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