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About product and suppliers:
        Alibaba.com offers 9,707 duct manufacturing machines products. About 51% of these are pipe making machinery, 15% are other metal & metallurgy machinery, and 1% 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 drain pipe, energy supply pipe. As well as from iron, carbon steel, and aluminum. And whether duct manufacturing machines is free samples, or paid samples. 

There are 9,719 duct manufacturing machines suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and India, which supply 99%, 1%, and 1% of duct manufacturing machines respectively. 

Duct manufacturing machines products are most popular in Southeast Asia, Western Europe, and North America. 

You can ensure product safety by selecting from certified suppliers, including 3,049 with ISO9001, 541 with Other, and 52 with OHSAS18001 certification.