EN ISO 11120:2015

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Inspection and testing
6 Materials
7 Design
8 Construction and workmanship
9 Type approval procedure
10 Batch tests
11 Tests on every tube
12 Special requirements for tubes for embrittling gases
13 Inspection certificate
14 Marking
Annex A (informative) - Typical chemistry groupings for
        seamless steel tubes
Annex B (normative) - Ultrasonic examination
Annex C (informative) - Description and evaluation of
        manufacturing imperfections and conditions for
        rejection of seamless steel tubes at time of
        final inspection by the manufacturer
Annex D (informative) - Acceptance certificate
Annex E (informative) - Type approval certificate
Annex F (informative) - Bend stress calculation
Bibliography

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.