METU - Striving for Better Ductwork

METU 1968
1968    Development of the 4-Bolt rectangular duct connection system.
An undisputed standard that is used today all over the world.
METU 1971
1971    Oval shaped access doors for rectangular and round ducts.
METU 1974
1974    Incorporation of the METU 4-Bolt connection system
into rectangular coil lines.
METU 1984
1984    Single-bolt circular flange connections.
Significantly simplifying the installation of round ducts.
METU 1990
1990    Four-bolt system for oval duct connections.
METU 2004
2004    METU-FORM optimized round ducts with formed-on
flanges setting the standard for higher industry requirements.