GB/T 24160-2022 English PDF (GBT24160-2022)

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GB/T 24160-2022: Hoop-wrapped composite cylinders with steel liner for the on-board storage of compressed natural gas as a fuel for automotive vehicles
GB/T 24160-2022
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 23.020.30
CCS J 74
Replacing GB/T 24160-2009
Hoop-wrapped composite cylinders with steel liner for the
on-board storage of compressed natural gas as a fuel for
automotive vehicles
(ISO 11439:2013, Gas cylinders - High pressure cylinders for the on-
board storage of natural gas as a fuel for auto motive vehicles, NEQ)
ISSUED ON: MARCH 09, 2022
IMPLEMENTED ON: APRIL 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms, definitions and symbols ... 7 
4 Type and parameters ... 8 
5 Technical requirements ... 9 
6 Test methods ... 15 
7 Inspection rules ... 23 
8 Marking, coating, packaging, transportation, storage ... 33 
9 Product certificate, product instruction manual and batch inspection quality certificate
... 34 
Annex A (normative) Hydrogen sulfide stress corrosion test ... 37 
Annex B (informative) Determination method for NDE defect size ... 39 
Annex C (normative) Ultrasonic testing ... 40 
Annex D (informative) Batch inspection quality certificate for hoop-wrapped
composite cylinders with steel liner for the on-board storage of compressed natural gas
as a fuel for automotive vehicles ... 45 
Bibliography... 47 
Hoop-wrapped composite cylinders with steel liner for the
on-board storage of compressed natural gas as a fuel for
automotive vehicles
1 Scope
This document specifies the types and parameters, technical requirements, test methods,
inspection rules, marking, coating, packaging, transportation and storage requirements
for hoop-wrapped composite cylinders with steel liner for the on-board storage of
compressed natural gas as a fuel for automotive vehicles (hereinafter referred to as "the
hoop-wrapped cylinder").
This document applies to the hoop-wrapped cylinders, of which the designed and
manufactured nominal working pressure is 20MPa, 25MPa, 30MPa, the nominal
volume is 30L~450L, the working temperature is -40℃~65℃, and the designed service
life is 15 years.
The hoop-wrapped cylinders manufactured in accordance with this document are only
used for the compressed natural gas storage containers for vehicles that are fixed on
vehicles and filled in compliance with GB 18047 and used as a vehicle fuel. Additional
loads due to external forces are not included in the conditions of use.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 222, Permissible tolerances for chemical composition of steel products
GB/T 223 (all parts), Iron, steel and alloy - Determination
GB/T 224, Determination of the depth of decarburization of steels
GB/T 226, Test method for macrostructure and defect of steel by etching
GB/T 228.1, Metallic materials - Tensile testing - Part 1: Method of test at normal
temperature
GB/T 229, Metallic materials - Charpy pendulum impact test method
d) Impact of gravel;
e) Contact with acid and alkali solutions, fertilizers;
f) Corrosion of automotive fluids, including gasoline, hydraulic fluids, battery acids,
glycols and oils;
g) Exposure to exhaust gases.
5.2 Materials
5.2.1 Liner materials
5.2.1.1 It shall be timeless sedated steel smelted by electric furnace or oxygen converter.
5.2.1.2 It shall use high-quality chrome-molybdenum steel (30CrMo or 34CrMo4).
5.2.1.3 It shall comply with the corresponding national standards or industry standards
and have a quality certificate. The manufacturer of the hoop-wrapped cylinder shall
carry out verification and analysis of various indicators according to the furnace tank
number.
5.2.1.4 The chemical composition of the material is limited as shown in Table 2. The
allowable deviation of its chemical composition shall be in accordance with the
provisions of GB/T 222.
5.2.1.5 The low magnification structure of the billet shall not have white spots, residual
shrinkage cavities, delamination, bubbles, foreign bodies and inclusions. The central
porosity shall not be greater than level 2.0. The segregation shall not be greater than
level 2.5.
Table 2 -- Chemical composition of steel
5.2.1.6 Seamless steel pipe
5.2.1.6.1 The straightness of the steel pipe shall not exceed 1.5mm/m. The roundness
shall not be greater than 80% of the allowable deviation of the outer diameter.
5.2.1.6.2 There shall be no cracks, folds, folds, delamination and scars on the inner and
outer surfaces of the steel pipes. If there are defects, they shall be completely removed.
The clearance shall be smooth. The actual wall thickness after removal shall not be less
than the minimum allowable wall thickness.
5.2.1.6.3 The seamless steel pipe shall be inspected for longitudinal and transverse
Element
Content
ultrasonic flaw detection one by one by the steel mill according to the provisions of
GB/T 5777. The requirements for acceptance level U2 shall be met.
5.2.2 Wrapping layer material
5.2.2.1 Resin
5.2.2.1.1 The impregnating material may be a thermoset or thermoplastic resin. Suitable
matrix materials are: epoxy, modified epoxy, polyester and vinyl thermosetting resins
and polyethylene, polyamide thermoplastic resins.
5.2.2.1.2 The performance and technical indicators of the impregnating material shall
comply with the provisions of the corresponding national standards or industry
standards. There shall be a quality certificate.
5.2.2.2 Fiber
5.2.2.2.1 The type of fiber material for structural reinforcement shall be glass fiber,
aramid fiber or carbon fiber.
5.2.2.2.2 The fiber material shall comply with the provisions of the corresponding
national standards or industry standards. It shall have a quality certificate.
5.3 Design
5.3.1 General provisions
5.3.1.1 This document does not provide design formulas. However, proper calculation,
analysis and demonstration are required in the design, so as to make the hoop-wrapped
cylinder can successfully pass the tests of materials, types and batches specified in this
document.
5.3.1.2 The design shall ensure that the failure mode of the hoop-wrapped cylinder due
to the degradation of the quality of the pressure-bearing components during normal use
is "leak before explosion". If the metal liner leaks, it shall only be due to the expansion
of fatigue cracks.
5.3.1.3 The maximum tensile strength of the liner material shall be limited. If the sulfur
and phosphorus content is not more than 0.005% and 0.010% respectively, and the
hydrogen sulfide stress corrosion test (stress ring method) is carried out according to
Annex A and GB/T4157, the actual tensile strength of the allowable material shall be
greater than 880MPa but not greater than 1000MPa. When designing, the guaranteed
value of the yield strength of the liner material shall not exceed 90% of the guaranteed
value of the tensile strength.
5.3.1.4 The hydrostatic test pressure Ph of the hoop-wrapped cylinder is 1.5 times the
nominal working pressure P.
5.4.1 The manufacture of the liner and the hoop-wrapped cylinder shall comply with
the provisions of this document. It shall comply with the product drawings and the
provisions of the relevant tec...