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About product and suppliers:
        Alibaba.com offers 80,510 plain tube products. About 1% of these are pipe,drainage tubes & containers, 1% are plastic tubes, and 1% are injection & puncture instrument. 

A wide variety of plain tube options are available to you, such as free samples, paid samples. 

There are 80,330 plain tube suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 99%, 1%, and 1% of plain tube respectively. 

Plain tube products are most popular in South America, Southeast Asia, and North America. 

You can ensure product safety by selecting from certified suppliers, including 30,774 with ISO9001, 10,169 with Other, and 6,199 with ISO14001 certification.