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About product and suppliers:
        Alibaba.com offers 12,341 roof purlin products. About 9% of these are metal building materials, 4% are steel channels, and 1% are other construction material making machinery. 

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

There are 12,341 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 3,471 with ISO9001, 853 with Other, and 170 with ISO14001 certification.