Real photos of the production site of Yuantai Derun straight seam submerged arc welded steel pipes
Real photos of the production site of Yuantai Derun straight seam submerged arc welded steel pipes
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![Wanderers - a short film by Erik Wernquist [Official Version]](https://sun9-32.userapi.com/pXnHqaf_vjqo6ONy9FoFQaeFJ7blM5Zjl4YCLw/pMO_sPjHhM4.jpg)
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