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About product and suppliers:
        Alibaba.com offers 13,287 roof purlin products. About 11% of these are metal building materials, 4% are steel channels, and 1% are steel sheets. 

A wide variety of roof purlin options are available to you, such as aisi, astm. You can also choose from not perforated, is perforated. As well as from c channel, u channel. And whether roof purlin is free samples, or paid samples. 

There are 13,287 roof purlin suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of roof purlin respectively. 

Roof purlin products are most popular in Africa, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 4,612 with ISO9001, 848 with Other, and 206 with ISO14001 certification.
        
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