Material：

Galvanized steel Plate (g)

Stainless steel plate (s)

Size：

Outer tube: Use SD standard spiral tube (0. $number. 5mm).

Inner tube: The use of PSD piercing spiral pipe (0.5mm).

Insulation Material: Use long, short fiber glass wool.

Characteristics：

With excellent insulation and silencing effect.

Beautiful appearance, the most suitable for wind Taru place.

Computerized cutting, combined with artificial.

The insulation layer is sandwiched between two layers, and is not shed by years long.

Special specifications can also be customized according to customer requirements.

According to the American Sheetmetal Association SMACNA Standard production.