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This standard has been updated and the newly-amended edition is ready for purchase. It is an indispensable guide to those who specify, purchase or supply steel, of the standard purchase specifications and delivery conditions 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.

The Amendment was produced in order to fulfil the requirements of the EC mandate M/131 belonging to Construction Product Directive 89/106/EC. The scope of BS EN 10255:2004 has not changed.

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. This essential amendment has been prepared under Mandate M/131 “Pipes, tanks and ancillaries not in contact with water intended for human consumption” given to CEN by the European Commission and the European Free Trade Association in order to meet the requirements of the Mandate given under the EU Construction Products Directive (89/106/EEC).

Although the scope of BS EN 10255:2004 has not changed, BS EN 10255:2004 incorporating Amendment 1:2007 -  unusually for an amendment -  will supersede BS EN 10255:2004.

Contents Include:

Normative references
Terms and definitions
Classification and designation
Information to be obtained from the purchaser
Mandatory information
Examples of ordering by outside diameter and thickness
Ordering by thread size and series
Manufacturing process
Steelmaking process
Tube manufacturing process
Delivery conditions
Alternative finishes and protection of the tube ends
Suitability for hot dip galvanizing
Hot dip galvanized condition
Chemical composition and mechanical properties
Dimensions, masses and tolerances
Leak tightness
Dangerous substances
Reaction to fire
Type of inspection
Inspection documents
Tensile test
Bend test
Flattening test
Leak tightness test

Dimensional inspection
Visual examination
Temporary protective coating
Evaluation of conformity
Initial type testing (ITT)
Product families
Use of historical data
Deemed to satisfy’ provisions and use of reference tabulated data
Factory production control (FPC)
Raw materials and components
Product testing and evaluation
Non-conforming products
Correlation between specified outside diameter, thread size, and nominal
Types of tubes with wall thickness different from medium and heavy series
Clauses of this European Standard addressing the provisions of the EC
Construction Products Directive for applications covered by Mandate M/131
Scope and relevant characteristics
Procedure for attestation of conformity of pipes
Declaration of conformity
CE marking and labelling

BS EN 10255:2004 replaces BS 1387:1985, which has been withdrawn.

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