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About product and suppliers:
        Alibaba.com offers 60 sch 40 nipple products. About 100% of these are pipe fittings. 

A wide variety of sch 40 nipple options are available to you, such as iron, carbon steel. You can also choose from reducing, equal. As well as from male, female, and welding. And whether sch 40 nipple is hexagon, or square. 

There are 60 sch 40 nipple suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of sch 40 nipple respectively. 

Sch 40 nipple products are most popular in Northern Europe, Western Europe, and North America. 

You can ensure product safety by selecting from certified suppliers, including 8 with Other, 3 with ISO9001, and 1 with ISO14001 certification.