This document specifies the requirements for circular non-alloy steel tubes suitable for welding and threading and
provides a number of options for the finish of tube ends and coatings. This document covers tubes of specified
outside diameter 10,2 mm to 165,1 mm (thread size 1/8 to 6) in two series, medium and heavy, and three types of
designated thicknesses.
NOTE Tubes manufactured according to this document can be used for the conveyance of fluids as well as for other
applications.
EN 10255:2007 Referenced Document
EN 10002-1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Ambient Temperature
EN 10020 Definition and classification of grades of steel
EN 10021 General technical delivery conditions for steel products*， 2024-04-19 Update
EN 10027-1 Designation Systems for Steels - Part 1: Steel Names
EN 10027-2 Designation systems for steels - Part 2: Numerical system*， 2015-04-01 Update
EN 10204 Metallic products - Types of inspection documents*， 2024-04-19 Update
EN 10226-1 Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads; Dimensions, tolerances and designation
EN 10240 Internal and/or external protective coatings for steel tubes - Specification for hot dip galvanized coatings applied in automatic plants
EN 10242 Threaded Pipe Fittings in Malleable Cast Iron Ratified European Text; A1-Corrigendum August 5, 1999
EN 10246-1 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 Leak-Tightness
EN 10266:2003 Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for use in product standards
EN ISO 1461 Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods (ISO 1461:2022)*， 2022-09-21 Update
EN ISO 2566-1 Steel - Conversion of elongation values - Part 1: Carbon and low-alloy steels (ISO 2566-1:2021, Corrected version 2022-06)*， 2021-12-22 Update
EN ISO 8491 Metallic materials - Tube (in full section) - Bend test
EN ISO 8492 Metallic materials - Tube - Flattening test*， 2024-04-19 Update
EN ISO 9001 Quality management systems - Requirements - Amendment 1: Climate action changes (ISO 9001:2015/Amd 1:2024)
EN 10255:2007 history
2007EN 10255:2007 Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditions Incorporates Amendment A1:2007