SN EN 10255 : 2004 + A1 2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
5 Information to be obtained from the purchaser
   5.1 Mandatory information
   5.2 Options
   5.3 Examples of ordering
        5.3.1 By outside diameter and thickness
        5.3.2 By thread size and series
6 Manufacturing process
   6.1 Steelmaking process
   6.2 Tube manufacturing process
7 Delivery conditions
   7.1 General
   7.2 Alternative finishes and protection of the
        tube ends
   7.3 Suitability for hot dip galvanizing
   7.4 Hot dip galvanized condition
8 Requirements
   8.1 General
   8.2 Chemical composition and mechanical properties
   8.3 Appearance
   8.4 Dimensions, masses and tolerances
   8.5 Leak tightness
   8.6 Dangerous substances
   8.7 Reaction to fire
9 Inspection
   9.1 Type of inspection
   9.2 Inspection documents
   9.3 Tensile test
   9.4 Bend test
   9.5 Flattening test
   9.6 Leak tightness test
   9.7 Dimensional inspection
   9.8 Visual examination
10 Marking
11 Temporary protective coating
12 Evaluation of conformity
   12.1 General
   12.2 Initial type testing (ITT)
        12.2.1 General
        12.2.2 Characteristics
        12.2.3 Product families
        12.2.4 Use of historical data
        12.2.5 Deemed to satisfy' provisions
               and use of reference tabulated data
        12.2.6 Sampling
   12.3 Factory production control (FPC)
        12.3.1 General
        12.3.2 Equipment
        12.3.3 Raw materials and components
        12.3.4 Product testing and evaluation
        12.3.5 Inspection
        12.3.6 Non-conforming products
Annex A (informative) Correlation between specified outside
        diameter, thread size, and nominal diameter
Annex B (normative) Types of tubes with wall thickness
                    different from medium and heavy series
   B.1 General
   B.2 Requirements
   B.3 Marking
Annex ZA (informative) Clauses of this European Standard
                       addressing the provisions of the EC
                       Construction Products Directive
                       for applications covered by Mandate
                       M/131
   ZA.1 Scope and relevant characteristics
   ZA.2 Procedure of attestation of conformity of pipes
        ZA.2.1 Systems of attestation of conformity
        ZA.2.2 Declaration of conformity
   ZA.3 CE marking and labelling

Describes 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.