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ASME-ANSI-B16.9工厂制对焊件ASMEB16.9-2001FACTORY-MADEWROUGHTBUTTWELDINGFITTINGSANAMERICANNATIONALSTANDARDASMEB16.9-2001FACTORY-MADEWROUGHTBUTTWELDINGFITTINGSANAMERICANNATIONALSTANDARDB...
ASME_B16.9-2001_(中文版)...
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