BS EN 10305-4:2003 Steel tubes for precision applications. Technical delivery conditions. Seamless cold drawn tubes for hydraulic and pneumatic power systems
BS EN 10305-4 is a European Standard specifies the technical delivery conditions for seamless cold drawn steel tubes of circular cross section used in hydraulic and pneumatic power systems.
Tubes according to BS EN 10305-4 are characterised by having precisely defined tolerances on dimensions and a specified surface roughness.
The allowed pressure rates and temperatures are the responsibility of the customer in accordance with the state of the art and in application of the safety coefficients specified in the applicable regulations, codes or standards.
Contents of BS EN 10305-4:
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification and designation
5.1 Classification
5.2 Designation
6 Information to be supplied by the purchaser
6.1 Mandatory information
6.2 Options
6.3 Example of an order
7 Manufacturing process
7.1 Steelmaking process
7.2 Tube manufacture and delivery conditions
8 Requirements
8.1 General
8.2 Chemical composition
8.3 Mechanical properties
8.4 Appearance and soundness
8.4.1 Appearance
8.4.2 Internal soundness
8.5 Dimensions and tolerances
8.5.1 Outside diameter, inside diameter and wall thickness
8.5.2 Lengths
8.5.3 Straightness
8.5.4 Preparation of ends
9 Inspection
9.1 Type of inspection
9.2 Inspection documents
9.2.1 Type of inspection documents
9.2.2 Content of inspection documents
9.3 Summary of inspection and testing
10 Sampling
10.1 Test unit
10.2 Preparation of samples and test pieces
10.2.1 General
11 Test methods
11.1 Tensile test
11.2 Flattening test
11.3 Drift expanding test
11.4 Dimensional inspection
11.5 Visual examination
11.6 Leak tightness test
11.7 Retests, sorting and reprocessing
12 Marking
13 Protection and packaging
13.1 Protection
13.2 Packaging
Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives
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