This part of GB/T 4437 specifies requirements, test methods, inspection rules and marking, packaging, transportation, storage and quality certificates and the contents of order (or contract) for aluminum and aluminum alloy extruded tubes produced by shunt single split mold or bridge-type single split mold.
This part is applicable to shunt single split mold or bridge type single split mold produced by aluminum and aluminum alloy seamed round tube, rectangular tube and regular polygon pipe (hereinafter referred to as tube).
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references; the latest edition of the referenced document (including any amendments) applies.
GB/T 3190 Wrought Aluminum and Aluminum Alloy—Chemical Composition
GB/T 3199 Aluminum and Aluminum Alloy Products—Packaging, Marking, Transportation and Storage
GB/T 3246.1 Wrought Aluminum and Aluminum Alloys Products Inspection Method for Structure—Part 1: Inspection Method for Microstructure
GB/T 3246.2 Wrought Aluminum and Aluminum Alloys Products Inspection Method for Structure—Part 2: Macroscopic Structure Inspection Method
GB/T 4436-2012 Aluminum and Aluminum Alloy Tubes—Dimensions and Deviations
GB/T 7999 Optical Emission Spectrometric Analysis Method of Aluminum and Aluminum Alloys
GB/T 8013.1 Anodic Oxide Coating and Organic Polymer Coatings on Aluminum And Its Alloys—Part 1: Anode Oxide Film
GB/T 8013.2 Anodic Oxide Coating and Organic Polymer Coatings on Aluminum and Its Alloys—Part 2: Composite Anodized Coating
GB/T 8013.3 Anodic Oxide Coating and Organic Polymer Coatings on Aluminum and Its Alloys—Part 3: Organic Polymer Spraying Membrane
GB/T 8170 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values
GB/T 12966 Test Method of Aluminum Alloy Conductance Eddy Current
GB/T 16865 Wrought Aluminum, Magnesium and Its Alloys Processed Products—Tensile Test Sample and Method
GB/T 17432 Methods of Sampling for Analyzing the Chemical Composition of Wrought Aluminum and Aluminum Alloy
GB/T 20975
(All Parts) Methods for Chemical Analysis of Aluminum And Aluminum Alloys
3 Requirements
3.1 Product classification
3.1.1 Designation and supply status
Designation and supply status of tube shall be in accordance with those specified in Table1. When other designation or status is required, it shall be as negotiated between the supplier and the purchaser and be specified in the order form (or contract).
GB/T 4437.2-2017 The following standards are cited：
