1, chemical analysis: the chemical composition of the material chemical analysis, chemical composition standards.
2, the pressure of the water pressure test tube pressure on the pressure by the pressure into the test, in the provisions of the pressure value does not remain not less than 5 seconds, not leak, conventional water pressure test for the 2.45MPa pressure test for P = 0.5 MPAa.
3, corrosion test: the supply of corrosion-resistant steel pipe according to the standard requirements or the agreement of the corrosion method of corrosion resistance test, no intergranular corrosion tendency.
4, the process performance test: flattening test. Tensile test. Impact test. Flare test. Hardness test. Metallographic test. Bend test. Nondestructive testing (including eddy current inspection X-ray detection and ultrasonic testing).
5, the 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-Outside Diameter (mm)
