ASTM C421预制块型隔热材料翻滚时易碎性的标准试验方法
日期:2012-02-13 21:39
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
Several test methods for measuring mass loss by abrasion and impact of preformed block-type and preformed pipe-covering-type thermal insulation have been used previously. It is believed that no single test method completely covers all factors involving such forces for different kinds of materials, but this test meth
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