The basic standard of zipper luggage hardware accessories
I. Topic content and scope of application
This standard specifies the quality requirements for aluminum alloy profiles.
This standard applies to travel clothing boxes and other decorative aluminum alloy profiles.
Second, the reference standard
GB/T228 metal tensile test method
Chemical composition of GB/T3190 aluminum and aluminum alloy products
GB/T3199 Aluminum and Aluminum Alloy Processed Products Packaging, Marking, Transportation, Storage
Inspection method of GB/T3246 aluminum and aluminum alloy products
GB/T3247 Aluminium and Aluminum Alloy Products
GB/T6892 Industrial Aluminum and Aluminum Alloy Hot Extrusion Profiles
GB/T6987.1--6987.23 Aluminum alloy chemical analysis method
Third, product classification
1. Brand, status, specifications
2. The alloy grades, status and specifications of the profiles shall comply with the requirements
Note : According to the demand side, other grades of profiles listed in the national standards can also be provided.
3. Profiles are classified according to their dimensional accuracy : ordinary precision profiles and high-precision profiles. High-precision profiles need to be specified in the contract and drawings agreed upon by both parties. Those not specified are supplied with normal-precision profiles.
4. Size and Allowable Deviation
5. The section size of the profile should meet the technical drawings signed by both parties.
6. The allowable deviation of profile section size is in accordance with Table 2 and Table 3 of GB/T 6892 or agreement between both parties.
7. The length of the profile can be supplied in varying lengths, lengths or multiples. Its length is in the range of 1 to 3 meters. Profiles longer than 3 meters in length are required to be provided in the contract by mutual agreement.
8. The allowable deviation of the length of the ( fold ) ruled section is +20mm , and the margin of the cut should be added. Each cut is 5mm.
9. The end face of the profile should be cut flat and the slope should not exceed 50.
So choosing the right harware accessories for the suitcase bag is very important.
