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About product and suppliers:
        Alibaba.com offers 47,236 material specification products. About 3% of these are steel pipes, 1% are office chairs. 

A wide variety of material specification options are available to you, such as 10#, api j55, and 20#. You can also choose from astm, bs, and gb. As well as from api, ce, and bsi. And whether material specification is structure pipe, oil pipe, or fluid pipe. 

There are 47,064 material specification suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Pakistan, and India, which supply 97%, 1%, and 1% of material specification respectively. 

Material specification products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 19,522 with ISO9001, 7,222 with Other, and 5,846 with ISO14001 certification.