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Home>ASTM D4990-97a(2020)

ASTM D4990-97a(2020)

ASTM D4990-97a(2020)

Standard Specification for Coal-Tar Glass Felt Used in Roofing and Waterproofing

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1.1 ,This specification covers glass felt impregnated with coal-tar intended to be used with coal-tar pitch conforming to the appropriate requirements of Specification D450/D450M in construction of built-up roofs and in the construction of waterproofing systems.

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