DIN 21341-1986 木罐矿道标准全文

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适用范围: Wooden shaft guides serve for guiding cages, skips and counterweights in shafts and drifts. The standard contains designations and dimensions of wooden shaft guides, wood quality data, and required properties. The standard contains instructions relative to quality inspection and sheltered storage of wooden shaft guides.#,,#

DIN 21341-1986木罐矿道