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About product and suppliers:
        Alibaba.com offers 4,319 50mm hdpe pipe products. About 54% of these are plastic tubes, 1% are other watering & irrigation, and 1% are hdpe. 

A wide variety of 50mm hdpe pipe options are available to you, such as pe, pvc, and pp. You can also choose from free samples, paid samples. 

There are 4,240 50mm hdpe pipe suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Vietnam, and Russian Federation, which supply 98%, 1%, and 1% of 50mm hdpe pipe respectively. 

0mm hdpe pipe products are most popular in Domestic Market, Southeast Asia, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 1,285 with ISO9001, 548 with ISO14001, and 381 with Other certification.