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About product and suppliers:
        Alibaba.com offers 53,546 screwed union products. About 2% of these are pipe fittings. 

A wide variety of screwed union options are available to you, such as union, elbow, and tee. You can also choose from plastic, stainless steel, and pp-r. As well as from equal, reducing. And whether screwed union is welding, female, or male. 

There are 53,546 screwed union suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of screwed union respectively. 

Screwed union products are most popular in North America, South America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 10,831 with ISO9001, 7,814 with Other, and 1,327 with ISO14001 certification.