ASTM G17-07-2020 “Standard Test Method for Permeability Resistance of Pipe Coatings (Blunt Rods)”

Ý nghĩa và cách sử dụng

3.1 Since the pipe coating is subject to concentrated pressure exerted by the weight of the pipe and the backfill, this test is mainly used to determine the resistance of the coating to penetration or deformation under controlled conditions.

3.1.1 If the coating is not penetrated, the deformation of the compressible coating does not indicate a potential defect in the underground burial service. Deformation is not comparable to penetration coating.

ASTM G17-07-2020 “Standard Test Method for Permeability Resistance of Pipe Coatings (Blunt Rods)”

Phạm vi

1.1 This accelerated test method is used to determine the relative resistance of steel pipe coatings to penetration or deformation of blunt rods under specified loads. This test method is applicable to the test of all kinds of non-metallic pipe coatings under various temperatures.

1.2 The value of three significant decimal places in SI units shall prevail. Các giá trị trong ngoặc chỉ mang tính chất tham khảo.

1.3 Tiêu chuẩn này không nhằm mục đích giải quyết tất cả các vấn đề an toàn, nếu có, gắn liền với việc sử dụng nó. Người sử dụng tiêu chuẩn này có trách nhiệm thiết lập sự an toàn thích hợp, health, and environmental practices and to determine the applicability of regulatory restrictions prior to use.

ASTM G17-07-2020 “Standard Test Method for Permeability Resistance of Pipe Coatings (Blunt Rods)”

1.4 This international standard is developed in accordance with the internationally recognized standardization principles established in the decisions on International Standards, Guidelines and Recommended Principles issued by the WTO Technical Barriers to Trade (TBT) Committee.