GB/T 31976-2015: Translated English of Chinese Standard. (GBT 31976-2015, GB/T31976-2015, GBT31976-2015): Aluminium Alloy Sheets Used for Sound-Absorbing Composite Panel with Through-Hole
This Standard specifies the requirements, test methods, inspection rules and marks, package, transportation, storage, quality certificate, and order (or contract) of the aluminium alloy sheets used for sound-absorbing composite panel with through-hole.
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3.6 Appearance quality 3.6.2 The following 3.6.3 The following 4.2 Dimension tolerance 4.4 Bending properties 4.5 Appearance quality Allowable Tolerance allowed to appear allowed to inspect aluminium alloy sheets Aluminium and Aluminium Aluminum Alloys GB/T arbitration analysis batch of sheets Bending Properties Grade Bending Properties Tensile Bending radius bending test conducted 90 Diagonal Line Tolerance following defects Grade State Thickness inspect the sheets inspection results judged as disqualified Mechanical and Bending methods stipulated Non-ferrous Metals order or contract Panel with Through-Hole pieces of sheets pine branch patterns properties The bending provisions of GB/T provisions of Table qualified sheets quality certificate quality The appearance radius mm 5754 re-inspected results re-sampling inspection sheet is disqualified sheets at room sheets piece sheets shall conform Sound-Absorbing Composite Panel stipulated in GB/T supplier and purchaser supplier is allowed take double number tensile mechanical properties Tensile strength Rm/MPa Tolerance of Thickness tolerance The measurement Wrought Aluminium