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ASTM C421预制块型隔热材料翻滚时易碎性的标准试验方法

ASTM C421 Standard Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal Insulation
ASTM C421预制块型隔热材料翻滚时易碎性的标准试验方法

1. ASTM C421标准适用范围
1.1 This test method covers determination of the mass loss of preformed block-type and preformed pipe-covering-type thermal insulation as a result of a combination of abrasion and impact produced by a laboratory tumbling mechanism.
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