Snap-fit
Packaging and Shipping: Once the aluminium window profiles have passed all quality control checks, they are packaged for protection during transportation and are shipped to their final destination, where they will be used in window installations.
HOW TO MAINTAIN YOUR WROUGHT IRON FENCE
While at it, you should be careful not to overheat it to a melting point, often about 1200° F. An ideal heating point should be approximately 900° F.