[China Aluminum Industry Network] The big difference between the European standard aluminum profile and the national standard aluminum profile is:

First, the groove type is different. When the profile is fixedly connected, different nuts are placed in the profile groove. The national standard profile groove is placed with a regular square nut, and the European standard profile element is placed with a special profiled nut.

Second, the profile corner chamfer is different, the national standard profile four corners chamfer is very small, the basic right angle. The four corners of the European standard profile have large arc chamfers.

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