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About product and suppliers:
        Alibaba.com offers 70,836 standard connect products. About 8% of these are valves, 4% are pipe fittings, and 1% are steel pipes. 

A wide variety of standard connect options are available to you, such as 10#, 16mn, and 20#. You can also choose from structure pipe, fluid pipe, and oil pipe. As well as from api, astm, and din. And whether standard connect is erw, hot rolled, or cold drawn. 

There are 70,836 standard connect suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of standard connect respectively. 

Standard connect products are most popular in North America, Domestic Market, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 20,552 with ISO9001, 8,724 with Other, and 5,139 with ISO13485 certification.