Stainless Steel Seamless

stainless steel seamless product feature

1, chemical analysis: chemical analysis of the chemical composition of the material, chemical composition in line with the standard provisions.

2, air pressure. Water pressure test for the pressure pipe into the water pressure test, at the specified pressure value is not maintained for not less than 5 seconds, no leakage, the conventional supply water pressure pressure test is 2.45MPa. The air pressure test was P=0.5MPAa.

3, corrosion test: the industrial corrosion resistant steel pipes are provided in accordance with the standard provisions or the corrosion method agreed by the two parties for corrosion resistance of the steel pipes, shall not have the tendency of intergranular corrosion.

4, process performance test: flattening test. Tensile test. Impact test. Flaring test. Hardness test. Metallographic test. Bending test. Non-destructive testing (including eddy current testing). X-ray and ultrasonic inspection).

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- Outside diameter (mm)

seamless stainless steel apply

Stainless steel seamless tubes used as reprocessing units reduce the carbon content in order to minimize the chromium carbon compounds in the welding affected areas, or limit the silicon and phosphorus content in 310Nb steel. In addition, in order to improve the corrosion resistance in nitric acid in 304ULC steel, the steel industry is made to limit the phosphorus content to less than 0.015%. Through repeated 20 times of 65% boiling nitric acid corrosion test, it is concluded that if the corrosion degree of the solid solution treatment material is below 0.1mm/a, 650℃×2h sensitized treatment material is below 0.2mm/a, it has excellent corrosion.

Ti-5a alloy with improved titanium and overall corrosion resistance has been used in the manufacture of U and Pu solution evaporation boilers and heat recovery evaporation boilers at the Tokai Reprocessing plant in Japan. In addition, because zirconium has stable corrosion resistance in nitric acid environments, the reprocessing plant in Rokkasho Village, Aomori Prefecture, Japan, uses zirconium in its continuous dissolution tank.

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