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About product and suppliers:
        Alibaba.com offers 4,700 middle flange products. About 6% of these are valves, 3% are flanges, and 2% are pipe fittings. 

A wide variety of middle flange options are available to you, such as carbon steel, plastic, and stainless steel. You can also choose from din, asme, and bs. As well as from welding, flange, and female. And whether middle flange is free samples, or paid samples. 

There are 4,721 middle flange suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Vietnam, and Taiwan, which supply 99%, 1%, and 1% of middle flange respectively. 

Middle flange products are most popular in Southeast Asia, Western Europe, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 1,796 with ISO9001, 156 with OHSAS18001, and 140 with ISO14001 certification.