HB 4-139-1983 装有内锥管嘴的2组钢丝编织软管.pdf

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HB 4-124-1983 工作压力为15kgcm'2的装有内锥管嘴的4;5组棉线编织软管.pdf

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HB 4-139-1983 装有内锥管嘴的2组钢丝编织软管.pdf

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HB 4-131-1983 工作压力为30-120kg／cm2 的装有内锥管嘴的4组棉线编织软管.pdf

HB 4-128-1983 工作压力为15kg／cm2的装有内锥管嘴的2组棉线编织软管.pdf

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