ASTM D4990-1997a 标准详情
- 标准号:ASTM D4990-1997a
- 中文标题:屋顶和防水屋顶用柏油玻璃毡标准规范
- 英文标题:Standard Specification for Coal Tar Glass Felt Used in Roofing and Waterproofing
- 标准类别:美国材料与试验协会ASTM
- 发布日期:1997
1.1 This specification covers glass felt impregnated with coal tar to be used with coal tar pitch conforming to the appropriate requirements of Specification D 450 in construction of built-up roofs and in the construction waterproofing systems.1.2 Th
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