at present, sales of aluminum on the market have national standard profiles and european standard profiles
national standard aluminum profiles and european standard aluminum profiles difference is:
1. different slot type, placed in the profiles of fixed connection profiles groove nut, gb profiles groove placed ordinary square nut, oubiao profiles should be placed special nut.
2. different profiles of edge chamfer, gb profiles four corners chamfering small, basic is a right angle european standard profiles four edges have larger arc chamfering. |
