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About product and suppliers:
        Alibaba.com offers 146 double blind flange products. About 70% of these are flanges, 1% are valves, and 1% are flange. 

A wide variety of double blind flange options are available to you, such as ansi, asme, and din. You can also choose from carbon steel, stainless steel, and alloy steel. As well as from free samples. 

There are 146 double blind flange suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of double blind flange respectively. 

Double blind flange products are most popular in Mid East, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 62 with ISO9001, 34 with Other, and 4 with OHSAS18001 certification.