ISO 11120:2015 specifies minimum requirements for the material, design, construction and workmanship, manufacturing processes, examinations and tests at manufacture of refillable quenched and tempered seamless steel tubes of water capacities exceeding 150 l up to and including 3 000 l for compressed and liquefied gases exposed to extreme world-wide ambient temperatures, normally between ?50 °C and ?65 °C. ISO 11120:2015 is applicable to tubes with a maximum tensile strength, Rma, of less than 1 100 MPa. These tubes can be used alone or in batteries to equip trailers or multiple element gas containers (ISO modules or skids) for the transportation and distribution of compressed gases. ISO 11120:2015 is applicable to tubes having an opening at each end.
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Inspection and testing
6 Materials
6.1 General requirements
6.2 Controls on chemical composition
6.3 Heat treatment
6.4 Mechanical properties
6.5 Failure to meet test requirements
7 Design
7.1 Calculation of cylindrical shell thickness
7.2 Design of tube ends
7.3 Design drawing
8 Construction and workmanship
8.1 General
8.2 Surface imperfections
8.3 Ultrasonic examination
8.4 End closure (fitting)
8.5 Dimensional tolerances
9 Type approval procedure
9.1 General requirements
9.2 Prototype tests
9.3 Type approval test report
9.4 Type approval certificate
10 Batch tests
10.1 General requirements
10.2 Mechanical tests
10.3 Interpretation of results
11 Tests on every tube
11.1 General
11.2 Hydraulic test
11.3 Hardness testing
11.4 Visual inspection
11.5 Dimensional inspection
11.6 Ultrasonic non-destructive test
12 Special requirements for tubes for embrittling gases
12.1 General
12.2 Materials
12.3 Design
12.4 Construction and workmanship
12.5 Mechanical tests
13 Inspection certificate
14 Marking
Annex A Typical chemistry groupings for seamless steel tubes (informative)
Annex B Ultrasonic examination (normative)
Annex C Description and evaluation of manufacturing imperfections and conditions for rejection of seamless steel tubes at time of final inspection by the manufacturer (informative)
12 Special requirements for tubes for embrittling gases
12.1 General
12.2 Materials
12.3 Design
12.4 Construction and workmanship
12.5 Mechanical tests
13 Inspection certificate
14 Marking
Annex A Typical chemistry groupings for seamless steel tubes (informative)
Annex B Ultrasonic examination (normative)
Annex C Description and evaluation of manufacturing imperfections and conditions for rejection of seamless steel tubes at time of final inspection by the manufacturer (informative)
ISO 11114-1:2012 Gas cylinders -- Compatibility of cylinder and valve materials with gas contents -- Part 1: Metallic materials
ISO 11114-4:2005 Transportable gas cylinders -- Compatibility of cylinder and valve materials with gas contents -- Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement
ISO 13769:2007 Gas cylinders -- Stamp marking
ISO 11114-1:2012 Gas cylinders -- Compatibility of cylinder and valve materials with gas contents -- Part 1: Metallic materials
ISO 11114-4:2005 Transportable gas cylinders -- Compatibility of cylinder and valve materials with gas contents -- Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement
ISO 13769:2007 Gas cylinders -- Stamp marking
ISO 148-1:2009 Metallic materials -- Charpy pendulum impact test -- Part 1: Test method
ISO 148-2:2008 Metallic materials -- Charpy pendulum impact test -- Part 2: Verification of testing machines
ISO 148-3:2008 Metallic materials -- Charpy pendulum impact test -- Part 3: Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum impact machines
ISO 6506-1:2014 Metallic materials -- Brinell hardness test -- Part 1: Test method
ISO 6506-2:2014 Metallic materials -- Brinell hardness test -- Part 2: Verification and calibration of testing machines
ISO 6506-3:2014 Metallic materials -- Brinell hardness test -- Part 3: Calibration of reference blocks
ISO 6892-1:2009 Metallic materials -- Tensile testing -- Part 1: Method of test at room temperature
ISO 9712:2012 Non-destructive testing -- Qualification and certification of NDT personnel