seamless stainless steel products characteristics:

1, chemical analysis: The chemical composition of materials for chemical analysis, chemical composition in line with the standards. 2, air pressure. Hydraulic test pressure on the pipe with water pressure you into the branch-by-trial provisions in the value of the pressure to maintain not less than 5 seconds, the non-disclosure, the supply of conventional hydraulic pressure to test 2.45MPa. Pressure Pressure test for the P = 0.5MPAa. 3, corrosion tests: for the industry standards are corrosion-resistant steel pipe or an agreement the two sides of the pipe corrosion methods of testing corrosion resistance, may not have a tendency to intergranular corrosion. 4, inspection process performance: squash test. Tensile test. Impact test. Expanding the pilot. Hardness test. Metallographic test. Bending test. Nondestructive testing (including eddy current testing. X-ray and ultrasonic flaw detection ).

5, implementation of the standards: China: GB/T14975-2002.GB/T14976- 2002.GB13296-91.GB9948-88. GB5310-95.GB2270-80 the United States: ASTM A213/A213-99a.ASTN312/A312M-00b.ASTM A269-00.ASTMA511-96. Japan: JIS3463.JIS3446.JIS3448.JIS3459 Germany: DIN2462 6, the weight of theory: Cr-Ni austenitic stainless steel ; W = 0.02491S (DS) Cr-Ni-Mo austenitic stainless steel (kg / m) S-wall thickness (mm) D-diameter (mm)