Characteristics of stainless steel seamless pipe

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Stainless steel seamless pipe is a kind of long steel with hollow section and no joint around it. The thicker the wall thickness is, the more economical and practical it will be. The thinner the wall thickness is, the higher the processing cost will be. The process of this product determines its limited performance. Generally, the precision of seamless steel tube is low: uneven wall thickness, low brightness inside and outside the tube, high cost of sizing, and the pitting and black spots on the inside and outside surface are not easy to remove; its detection and shaping must be off-line processed. Therefore, it embodies its superiority in high pressure, high strength and mechanical structure materials.

Characteristics of stainless steel seamless pipe:

1. Chemical analysis: Chemical analysis of the chemical composition of the material, the chemical composition meets the requirements of the standard.

2. Pressure and water pressure test for each branch of pressure-resisting pipe. The prescribed pressure value should not be less than 5 seconds without leakage. The conventional supply water pressure test is 2.45 MPa. The pressure test is P=0.5 MPAa.

3. Corrosion test: All the industrial corrosion-resistant steel pipes supplied are inspected for corrosion resistance according to the standard or the agreed corrosion methods, and no tendency of intergranular corrosion is allowed.

4. Inspection of technological properties: flattening test, tensile test, impact test, flaring test, hardness test, metallographic test, bending test, non-destructive testing (including eddy current testing, X-ray testing and ultrasonic testing).

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)