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hot dipped galvanized rolled seamless steel pipe tube steel pipe seamless
6YRSTianjin Youfa International Trade Co Ltd
5YRSHEBEI SHENGDEBAOLONG INTERNATIONAL TRADING CO.,LTD
concrete pump straight pipe, seamless steel concrete pump pipe
5YRSHEBEI SHENGDEBAOLONG INTERNATIONAL TRADING CO., LTD
13YRSSinotai Petroleum Equipment Co., Ltd
ST52 Concrete Pump Seamless Pipe
5YRSHEBEI SHENGDEBAOLONG INTERNATIONAL TRADING CO.,LTD
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