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About product and suppliers:
        Alibaba.com offers 6,490 nf standard products. About 1% of these are steel pipes, 1% are ignition distributor, and 1% are turbochargers. 

A wide variety of nf standard options are available to you, such as astm, bs, and gb. You can also choose from structure pipe, fluid pipe, and oil pipe. As well as from 10#, 20#, and q195. And whether nf standard is erw, hot rolled, or cold rolled. 

There are 6,567 nf standard suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Canada, and Hong Kong, which supply 95%, 2%, and 1% of nf standard respectively. 

Nf standard products are most popular in Western Europe, Southeast Asia, and North America. 

You can ensure product safety by selecting from certified suppliers, including 3,035 with ISO9001, 1,925 with Other, and 194 with ISO14001 certification.