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About product and suppliers:
        Alibaba.com offers 2,683 portal frame steel structure products. About 57% of these are steel structures, 5% are metal building materials. 

A wide variety of portal frame steel structure options are available to you, such as aisi, gb. You can also choose from steel workshop, steel fabricated house, and frame part. As well as from light, heavy. And whether portal frame steel structure is free samples, or paid samples. 

There are 2,687 portal frame steel structure suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and Singapore, which supply 99%, 1%, and 1% of portal frame steel structure respectively. 

Portal frame steel structure products are most popular in Africa, Oceania, and South America. 

You can ensure product safety by selecting from certified suppliers, including 948 with ISO9001, 556 with Other, and 271 with OHSAS18001 certification.