Aluminum alloy doors and windows model specifications which
There are 70 series, 80 series, 90 series, 858 series, 878 series. The 888 series and so on.
Aluminum alloy doors and windows profiles are: 35 series, 38 series, 40 series, 60 series, 70 series, 90 series. The so-called 35,38 ... ... refers to the width of the main frame of aluminum alloy profiles are 35 mm, 38 mm. Sealed balcony is usually used 70 series or 90 series, if less than 70, the degree of hardness is difficult to guarantee.
An alloying element refers to a metal or nonmetallic element that is intentionally added or retained in the matrix metal to give the metal a certain property. When the name of the aluminum alloy is named, the first, third and fourth digits of the four-character system are Arabic numerals, and the second is English capital letters (except C, I, L, N, O, P, Q, Z). The first digit of the grade represents the group of aluminum and aluminum. In addition to modified alloy, the aluminum alloy group by the main alloying elements (6XXX by Mg2Si) to determine. The second letter of the grade indicates the modification of the original pure aluminum or aluminum alloy, and the last two digits are used to identify the different aluminum alloys in the same group or the purity of the aluminum.
