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About product and suppliers:
        Alibaba.com offers 11,375 duct manufacturing machines products. About 50% of these are pipe making machinery, 17% are other metal & metallurgy machinery, and 2% are plastic extruders. 

A wide variety of duct manufacturing machines options are available to you, such as pipe production line, pipe molding machine, and pipe bender. You can also choose from aluminum, carbon steel, and stainless steel. As well as from energy supply pipe, drain pipe, and food. And whether duct manufacturing machines is free samples, or paid samples. 

There are 11,388 duct manufacturing machines suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Turkey, which supply 99%, 1%, and 1% of duct manufacturing machines respectively. 

Duct manufacturing machines products are most popular in Southeast Asia, North America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 4,241 with ISO9001, 602 with Other, and 55 with OHSAS18001 certification.