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BS EN ISO 9809-4:2022 2023

BS EN ISO 9809-4:2022 2023

$198.66

Gas cylinders. Design, construction and testing of refillable seamless steel gas cylinders and tubes – Stainless steel cylinders with an Rm value of less than 1 100 MPa

Published By Publication Date Number of Pages
BSI 2023 64
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PDF Catalog

PDF Pages PDF Title
2 undefined
4 European foreword
Endorsement notice
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Symbols
12 5 Inspection and testing
6 Materials
6.1 General requirements
13 6.2 Controls on chemical composition
6.3 Heat treatment
6.4 Cold working or cryoforming
14 6.5 Failure to meet test requirements
7 Design
7.1 General requirements
7.2 Design of cylindrical shell thickness
15 7.3 Design of convex ends (heads and bases)
16 7.4 Design of the concave base ends
17 7.5 Neck design
7.6 Foot rings
7.7 Neck rings
18 7.8 Design drawing
8 Construction and workmanship
8.1 General
8.2 Wall thickness
8.3 Surface imperfections
8.4 Ultrasonic examination
19 8.5 Out-of-roundness
8.6 Mean diameter
8.7 Straightness
8.8 Verticality and stability
20 8.9 Neck threads
9 Type approval procedure
9.1 General requirements
21 9.2 Prototype test
9.2.1 General requirements
22 9.2.2 Pressure cycling test
9.2.3 Base check
23 9.2.4 Torque test for taper thread only
9.2.5 Shear stress calculation for parallel threads
9.3 Type approval certificate
24 9.4 Specific type approval/production tests for cylinders ordered in small quantities
10 Batch tests
10.1 General requirements
26 10.2 Tensile test
27 10.3 Bend test and flattening test
10.3.1 Bend test
28 10.3.2 Flattening test
10.3.3 Ring flattening test
10.4 Impact test
30 10.5 Hydraulic burst test
10.5.1 Test installation
31 10.5.2 Test conditions
32 10.5.3 Interpretation of test results
33 10.6 Intergranular corrosion test
11 Tests/examinations on every cylinder
11.1 General
34 11.2 Hydraulic test
11.2.1 Proof pressure test
11.2.2 Volumetric expansion test
11.3 Hardness test
11.4 Leak test
35 11.5 Capacity check
12 Certification
13 Marking
36 Annex A (normative) Description and evaluation of manufacturing imperfections and conditions for rejection of seamless steel gas cylinders at the time of final inspection by the manufacturer
51 Annex B (normative) Ultrasonic examination
57 Annex C (informative) Example of type approval certificate
58 Annex D (informative) Example of acceptance certificate
60 Annex E (informative) Example of shear strength calculation for parallel threads
62 Bibliography

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BS EN ISO 9809-4:2022 2023
$198.66