SIS SMS 1251-1973 F tt ngs for piping Hand wheels with straight square hole General dimensions《管道配件 带有直方孔的手轮 概要尺寸》.pdf

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BS ISO 9803-2-2007 Vacuum technology - Mounting dimensions of pipeline fittings - Knife-edge flange type《真空技术 管道配件的安装尺寸 刀口法兰型》.pdf

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