GB/T 4437.1-2023 PDF English
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| GB/T 4437.1-2023 | English | 290 |
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Aluminium and aluminium alloys extruded tubes - Part 1: Seamless tubes
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| GB/T 4437.1-2015 | English | 205 |
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Aluminium and aluminium alloy extruded tubes - Part 1: Seamless tubes
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| GB/T 4437.1-2000 | English | 239 |
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Aluminium and aluminium alloy extruded tubes. Part 1: Seamless tubes
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| GB/T 4437-1984 | English | RFQ |
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Aluminum and aluminum alloy extruded tubes
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GB/T 4437.1-2023: Aluminium and aluminium alloys extruded tubes - Part 1: Seamless tubes---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT4437.1-2023
GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
ICS 77.150.10
CCS H 61
Replacing GB/T 4437.1-2015
Aluminium and aluminium alloys extruded tubes - Part 1.
Seamless tubes
Issued on. NOVEMBER 27, 2023
Implemented on. JUNE 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
Introduction... 5
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 7
4 Classification... 7
5 Technical requirements... 8
6 Test methods... 14
7 Inspection rules... 15
8 Marking, packaging, transportation, storage, and quality certificate... 19
9 Contents of an order form (or contract)... 20
References... 21
1 Scope
This document stipulates the classification, technical requirements, test methods,
inspection rules, marking, packaging, transportation, storage, and quality certificate and
order form (or contract) content of aluminium and aluminium alloy hot-extruded
seamless tubes.
This document applies to the production and inspection of aluminium and aluminium
alloy hot-extruded seamless tubes (hereinafter referred to as "tubes") for general
industrial use.
2 Normative references
The contents of the following documents constitute essential provisions of this
document through normative references in the text. For the dated referenced documents,
only the versions with the indicated dates are applicable to this document; for the
undated referenced documents, only the latest version (including all the amendments)
is applicable to this document.
GB/T 3190 Chemical composition of wrought aluminium and aluminium alloys
GB/T 3199 Wrought aluminium and aluminium alloy products - Packing, marking,
transporting and storing
GB/T3246.1 Inspection method for structure of wrought aluminium and aluminium
alloy products - Part 1.Inspection method for microstructure
GB/T 3246.2 Inspection method for structure of wrought aluminum and aluminum
alloy products - Part 2.Inspection method for macrostructure
GB/T 4436 Wrought aluminum and aluminum alloy tubes - Dimensions and
deviations
3 Terms and definitions
The terms and definitions defined in GB/T 8005.1 and GB/T 26492.5 apply to this
document.
4 Classification
4.1 Grade, supply state, and dimensions
The grade, supply state, and dimensions of tubes shall comply with the requirements in
Table 1.
4.2 Marking and an example
Product markings are expressed in the order of product name, standard number, grade,
supply state, and dimensions.
5 Technical requirements
The technical requirements of tubes shall comply with the provisions of Table 2.
6 Test methods
The test methods for tubes shall comply with the provisions of Table 8.If the purchaser
has special requirements for the test method, it shall be determined through negotiation
between the supplier and the purchaser, and shall be noted in the order form (or contract).
7 Inspection rules
7.1 Inspection and acceptance
7.1.1 Tubes shall be inspected by the supplier to ensure that the product quality complies
with the provisions of this document and the order form (or contract), and a quality
certificate shall be filled out.
7.2 Batch grouping
Tubes shall be submitted for acceptance in batches, and each batch shall be composed
of products of the same grade, supply state, heat and dimensions, with no limit on batch
weight.
7.3 Weighing
Tubes shall be checked and weighed (unless otherwise agreed between the supplier and
the buyer).
7.4 Inspection items
When there are no special requirements specified in the order form (or contract), the
product inspection items shall comply with the provisions of Table 9.
7.6 Judgment of inspection results
7.6.1 Chemical composition
If the chemical composition of any specimen fails, the batch of products will be deemed
unqualified.
7.6.2 Dimensional deviation
If the dimensional deviation of any tube fails, the tube will be deemed to be unqualified.
7.6.3 Tensile mechanical properties at room temperature, conductivity, resistance
to stress corrosion, and susceptibility to intergranular corrosion
7.6.4 Ultrasonic flaw detection level
If the ultrasonic flaw detection level of any tube fails, the tube will be deemed
unqualified.
7.6.5 Macrostructure
If the macrostructure of any specimen fails, it shall be handled as follows.
7.6.6 Microstructure
When the microstructure of any specimen fails, if the tube's heat of heat treatment can
be distinguished, the heat of heat treatment represented by the specimen will be judged
to be unqualified; other heats will be inspected in sequence, and the qualified one will
be delivered. If the heat of heat treatment cannot be distinguished, the batch of tubes
will be judged to be unqualified.
7.6.7 Appearance quality
If the appearance quality of any tube fails, the tube will be deemed unqualified. It is
allowed to cut off the unqualified parts then re-inspect and deliver the qualified parts.
8 Marking, packaging, transportation, storage, and quality certificate
8.1 Marking
8.1.1 Product marking
Product identification shall comply with the regulations of GB/T 42916.
8.2 Packaging, transportation, and storage
The tubes are not packaged with oil, and the packaging method shall be specified in the
order form (or contract); if not specified, it will be a bare package or simple packaging.
Other packaging, transportation, and storage shall comply with the regulations of GB/T
3199.
8.3 Quality Certificate
Each batch of tubes shall be accompanied by a product quality certificate stating.
9 Contents of an order form (or contract)
An order form (or contract) for the products listed in this document may include the
following.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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