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About product and suppliers:
        Alibaba.com offers 167,208 d d b products. About 6% of these are steel pipes, 1% are pipe fittings, and 1% are other electronic components. 

A wide variety of d d b options are available to you, such as 10#, 20#, and a106(b,c). You can also choose from api, astm, and bs. As well as from cold drawn, erw, and hot rolled. And whether d d b is fluid pipe, structure pipe, or oil pipe. 

There are 167,208 d d b suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of d d b respectively. 

D d b products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 38,203 with ISO9001, 26,191 with Other, and 5,563 with ISO14001 certification.
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