DIN 21320-1987 标准详情
- 标准号:DIN 21320-1987
- 中文标题:矿山坑道用圆木.技术质量和交付要求
- 英文标题:Round pit timber; technical quality and delivery requirements
- 标准类别:德国标准
- 发布日期:1987-06
These quality specifications and terms of delivery apply mainly to props, canopies and half-round pieces of timber as per DIN 21316, for bars and split bars as per DIN 21317, and for struts as per DIN 21319, made from leaf or pinewood and used in min
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