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        Alibaba.com offers 5,952 duplex welded pipe products. About 58% of these are stainless steel pipes, 22% are pipe fittings, and 4% are steel pipes. 

A wide variety of duplex welded pipe options are available to you, such as astm, api, and jis. You can also choose from ul, ce, and bsi. As well as from fluid pipe, structure pipe, and gas pipe. And whether duplex welded pipe is 10#, q235, or a53(a,b). 

There are 5,883 duplex welded pipe suppliers, mainly located in Asia. The top supplying countries or regions are China, India, and Singapore, which supply 98%, 1%, and 1% of duplex welded pipe respectively. 

Duplex welded pipe products are most popular in South America, Mid East, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 4,070 with ISO9001, 1,045 with Other, and 931 with ISO14001 certification.