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About product and suppliers:
        Alibaba.com offers 9,303 sleeve flange products. About 6% of these are pipe fittings, 5% are flanges, and 4% are valves. 

A wide variety of sleeve flange options are available to you, such as carbon steel, stainless steel, and steel. You can also choose from iso, ansi, and bs. As well as from nonstandard, standard. And whether sleeve flange is free samples, or paid samples. 

There are 9,303 sleeve flange suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of sleeve flange respectively. 

Sleeve flange products are most popular in North America, Southeast Asia, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 4,632 with ISO/TS16949, 3,886 with ISO9001, and 1,889 with Other certification.