1 Scope
This part of GB/T 4437 specifies the requirements, test methods, inspection rules, marking, packaging, transport and storage, as well as quality certificate and order (or contract) information of aluminium and aluminium alloy extruded seamless tubes.
This part is applicable to the aluminium and aluminium alloy extruded seamless tubes for general engineering (hereinafter referred to as tube).
2 Normative references
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 230 (all parts) Metallic materials - Rockwell hardness test
GB/T 231 (all parts) Metallic materials - Brinell hardness test
GB/T 3190 Wrought aluminium and aluminium alloy - Chemical composition
GB/T 3199 Wrought aluminium and aluminium alloy products - Packing marking transporting and storing
GB/T 3246.1 Inspection method for structure of wrought aluminum and aluminum 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 aluminium and aluminium alloy tubes－Dimensions and deviations
GB/T 6519 Ultrasonic inspection of wrought aluminium and magnesium alloy products
GB/T 7998 Test method for intergranular corrosion of aluminium alloy
GB/T 7999 Optical emission spectrometric analysis method of aluminum and aluminum alloys
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 12966 The method for determining aluminium alloys conductivity using eddy current
GB/T 16865 Test pieces and method for tensile test for wrought aluminium and magnesium alloys products
GB/T 17432 Methods of sampling for analyzing the chemical composition of wrought aluminum and aluminum alloy
Foreword i
1 Scope
2 Normative references
3 Requirements
4 Test methods
5 Inspection rules
6 Marking, packaging, transport and storage as well as quality certificate
7 Order (or contract) content
