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ASME B16.5 ASTM 316L Socket Welding Flange SCH80 CL900
8YRSZhejiang Footo Pipe Fitting Manufacturing Co., Ltd.
UL/FM standard ASTM A53 A106 ERW Galvanized round Steel Tube
7YRSTianjin Youfa International Trade Co., Ltd.
UL/FM standard ASTM A53 A106 ERW Galvanized Steel Tube
7YRSTianjin Youfa International Trade Co., Ltd.
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