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About product and suppliers:
        Alibaba.com offers 104 boss connection products. About 36% of these are pipe fittings. 

A wide variety of boss connection options are available to you, such as stainless steel, iron, and carbon steel. You can also choose from equal, reducing. As well as from flange, welding. And whether boss connection is casting, or forged. 

There are 101 boss connection suppliers, mainly located in Asia. The top supplying countries are China (Mainland), South Korea, and Hong Kong, which supply 97%, 1%, and 1% of boss connection respectively. 

Boss connection products are most popular in North America, Southeast Asia, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 62 with ISO9001, 17 with Other, and 9 with ISO14001 certification.