1. Chemical analysis: chemical analysis of the chemical composition of the material, and the chemical composition meets the standard provisions.
2. Air pressure. The hydraulic test is a hydraulic test for the pressure resistant pipe one by one, and the specified pressure value is not maintained for less than 5 seconds, and it is not disclosed, and the conventional supply water pressure pressure test is 2.45MPa, and the air pressure pressure test is P=0.5MPAa.
3. Corrosion test: The supplied industrial corrosion-resistant steel pipes are tested for the corrosion resistance of the steel pipes in accordance with the corrosion methods stipulated by the standards or the agreements between the two parties, and there shall be no intergranular corrosion tendency.
4. Process performance inspection: flattening test. Tensile test. Impact test. Flaring test. Hardness test. Metallographic test. Bending test. Non-destructive testing (including eddy current testing. X-ray flaw detection and ultrasonic flaw detection).
5. Theoretical weight:
Cr-Ni austenitic stainless steel W=0.02491S(D-S)
Cr-Ni-Mo austenitic stainless steel (kg/m)S-Wall thickness(mm)
D-Outer Diameter(mm)
