Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM D450/D450M-07(2018)
• Năm ban hành / Publication date: 2018
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Specification for Coal-Tar Pitch Used in Roofing, Dampproofing, and Waterproofing
• Chỉ số phân loại Quốc tế (ICS) / By field: 91.100.50 - Chất kết dính. Vật liệu làm kín
• Số trang / Page: 2

Phạm vi áp dụng / Scope of standard

1.1 This specification covers two types of coal-tar pitch suitable for use in the construction of built-up roofing, dampproofing, and membrane waterproofing systems.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.