National standard: GB/T6892-2006; But because this standard is lower than the standard of building aluminum profile, so we generally use the national standard of building aluminum profile GB5237-2008 to control industrial aluminum type.
GB5237-2008 standard aluminum profile is divided into ordinary grade, high precision grade and super high precision grade three grades. Each level provides the size of the aluminum profile tolerance range, plane clearance, bending, twisting degree, etc.
Hardness standard: general 6063-T5 material of industrial aluminum profile hardness ≥8 degrees qualified, here refers to the hardness of Wechsler hardness.
Length standard: the length of industrial aluminum profiles produced by the existing aluminum manufacturers on the market is 6.02 meters. If you want to be a little longer, you can only process custom, generally not longer than 7.5 meters.
Cutting standard: general cutting error ≤0.5mm, so that when the aluminum profile frame assembly, there will be no installation up
