BS EN 10255 Non-alloy steel tubes suitable for welding and threading Technical delivery conditions

BS EN 10255 Non-alloy steel tubes suitable for welding and threading Technical delivery conditions

1 Scope

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.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

The requirements of this European Standard rule when they differ from those in the standards and documents referred to below:

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 requirements for steel and iron products

EN 10027-1, Designation systems for steel – Part 1: Steel names, principal symbols

EN 10027-2, Designation systems for steels – Part 2: Numerical system

EN 10204, Metallic products – Types of inspection documents

EN 10232, Metallic materials – Tube (in full section) – Bend test

EN 10233, Metallic materials – Tube – Flattening test

EN 10240, Internal and/or external protective coatings for steel tubes – Specification for hot dip galvanized coatings

applied in automatic plants

EN 10241, Steel threaded pipe fittings

EN 10242, Threaded pipe fittings in malleable cast iron

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 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.

prEN 10226-2, Pipe threads where pressure-tight joints are made on the threads – Part 2: Taper external threads and taper internal threads – Dimensions, tolerances and designation.

EN 10266:2003, Steel tubes, fittings and structural hollow sections – Symbols and definitions of terms for use in product standards.

Research use only,Commercial use is prohibited.

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