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About product and suppliers:
        Alibaba.com offers 10,749 roof beam products. About 3% of these are steel channels, 3% are metal building materials, and 1% are formwork. 

A wide variety of roof beam options are available to you, such as steel, stainless steel, and galvanized sheet. You can also choose from astm, jis, and en. As well as from ss400, q235b, and q235. And whether roof beam is free samples, or paid samples. 

There are 10,749 roof beam suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of roof beam respectively. 

Roof beam products are most popular in Africa, Domestic Market, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 2,932 with ISO9001, 1,337 with Other, and 285 with ISO14001 certification.
        
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