Stainless steel seamless steel tube product features

1, chemical analysis, chemical composition of materials for chemical analysis, chemical composition conform to the prescribed standards.

2, pressure. Hydrostatic test for pressure pipe by the water pressure test, don't keep the prescribed pressure values equal to or greater than 5 seconds, no leakage, conventional supply hydraulic pressure test at 2.45 MPa. The pneumatic pressure test P = 0.5 the MPAa.

3, corrosion test: for industrial corrosion resistant steel pipe are stipulated in the standard or agreement between the two sides corrosion method for steel pipe corrosion resistance testing, may not have tended to intergranular corrosion.

4, process performance inspection: the flattening test. Tensile test. The impact test. Flaring test. Hardness test. The metallographic test. Bending test. NDT (including eddy current testing. The X-ray detection and ultrasonic inspection).

5, theoretical weight: Cr - Ni austenitic stainless steel W = 0.02491 S (D - S) Cr - Ni - Mo austenitic stainless steel (kg/m) S - wall thickness (mm) D - diameter (mm)

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