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BS EN 10217-7:2021

BS EN 10217-7:2021

$189.07

Welded steel tubes for pressure purposes. Technical delivery conditions – Stainless steel tubes

Published By Publication Date Number of Pages
BSI 2021 48
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This document specifies the technical delivery conditions in two test categories for welded tubes of circular cross-section made of austenitic and austenitic-ferritic stainless steel which are intended for pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated temperatures.

NOTE

Once the reference of this document is published in the Official Journal of the European Union (OJEU) under Directive 2014/68/EU, pressure equipment directive, presumption of conformity to the Essential Safety Requirements (ESR) of Directive 2014/68/EU is limited to technical data of materials in this document and does not presume adequacy of the material to a specific item of equipment. Consequently, the assessment of the technical data stated in this material standard against the design requirements of this specific item of equipment to verify that the ESRs of the Pressure Equipment Directive are satisfied, needs to be done by the designer of the pressure equipment, taking also into account the subsequent manufacturing processes which could affect properties of the base materials.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
2 Normative references
11 3 Terms and definitions
4 Symbols
5 Classification and designation
5.1 Classification
12 5.2 Designation
6 Information to be supplied by the purchaser
6.1 Mandatory information
6.2 Options
13 6.3 Examples of an order
6.3.1 Example 1
14 6.3.2 Example 2
7 Manufacturing process
7.1 Steelmaking process
7.2 Tube manufacture and conditions
17 8 Requirements
8.1 General
8.2 Chemical composition
8.2.1 Cast analysis
8.2.2 Product analysis
20 8.3 Mechanical properties
8.3.1 At room temperature
21 8.3.2 At elevated temperature
8.3.3 At low temperature
27 8.4 Corrosion resistance
8.5 Appearance and internal soundness
8.5.1 Appearance
28 8.5.2 Internal soundness
8.5.2.1 General
8.5.2.2 Leak-tightness
8.5.2.3 Non-destructive testing
8.6 Straightness
8.7 Preparation of ends
29 8.8 Dimensions, masses and tolerances
8.8.1 Outside diameter and wall thickness
8.8.2 Mass
8.8.3 Lengths
8.8.4 Tolerances
8.8.4.1 Tolerance on outside diameter and on wall thickness
30 8.8.4.2 Height of the weld seam
8.8.4.3 Radial offset of plate or strip edges at the weld
8.8.4.4 Tolerances on exact lengths
31 8.8.4.5 Out of roundness
9 Inspection
9.1 Type of inspection
9.2 Inspection documents
9.2.1 Types of inspection documents
32 9.2.2 Content of inspection documents
9.3 Summary of inspection and verification testing
33 10 Sampling
10.1 Test unit
34 10.2 Preparation of samples and test pieces
10.2.1 Selection and preparation of samples for product analysis
10.2.2 Location, orientation and preparation of samples and test pieces for mechanical tests
10.2.2.1 General
10.2.2.2 Test pieces for the tensile test of the base material
10.2.2.3 Test pieces for the tensile test of the weld
35 10.2.2.4 Test pieces for the flattening, ring tensile, drift expanding and ring expanding tests
10.2.2.5 Test pieces for weld bend test
10.2.2.6 Test pieces for the impact test
10.2.2.7 Test pieces for the intergranular corrosion test
36 11 Verification test methods
11.1 Chemical analysis
11.2 Tensile test on the base material
11.2.1 At room temperature
11.2.2 At elevated temperature
11.3 Transverse tensile test on the weld
11.4 Technological tests
11.4.1 General
37 11.4.2 Flattening test
11.4.3 Ring tensile test
11.4.4 Drift expanding test
38 11.4.5 Ring expanding test
11.5 Weld bend test
11.6 Impact test
39 11.7 Intergranular corrosion test
11.8 Leak tightness test
11.8.1 Hydrostatic test
11.8.2 Eddy current test
40 11.9 Dimensional inspection
11.10 Visual examination
11.11 Non-destructive testing
41 11.12 Material identification
11.13 Retests, sorting and reprocessing
12 Marking
12.1 Marking to be applied
12.2 Additional marking
42 13 Handling and packaging
43 Annex A (informative)Technical changes from the previous edition
A.1 Introduction
A.2 Technical changes
45 Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU aimed to be covered

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BS EN 10217-7:2021
$189.07