DW/144: Specification for Sheet Metal Ductwork

DW/144 is the Standard Specification for ductwork manufacture and installation.

It defines the specifications for sheet metal ductwork for low, medium and high pressure/velocity air systems.

It covers ductwork application, materials, classification and air leakage.

Please feel free to contact us if you have any testing requests.

About STC

Established in 1963, STC (Hong Kong Standards and Testing Centre) is Hong Kong’s first independent, not-for-profit testing, inspection and certification organization.  STC offers a wide range of conformity assessment services on products covering Textile, Apparel, Footwear, Furniture and more.  In order to meet the global demand for testing and certification services, not only has STC set up testing facilities and customer service offices in China’s major cities such as Dongguan, Shanghai, Changzhou, Guangxi and Heilongjiang, but also in countries like Vietnam, Japan, USA and Germany.

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