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About product and suppliers:
        Alibaba.com offers 4,170 middle flange products. About 6% of these are flanges, 2% are pipe fittings. 

A wide variety of middle flange options are available to you, such as stainless steel, alloy steel, and carbon steel. You can also choose from asme, din, and iso. As well as from gate, deep groove, and ball. And whether middle flange is free samples, or paid samples. 

There are 4,170 middle flange suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of middle flange respectively. 

Middle flange products are most popular in Southeast Asia, Africa, and Oceania. 

You can ensure product safety by selecting from certified suppliers, including 805 with ISO9001, 213 with OHSAS18001, and 188 with ISO14001 certification.