304 stainless steel pipe seamless pipe product characteristics

Stainless steel seamless pipe product features:
1. Chemical analysis: chemical analysis of the chemical composition of the material, the chemical composition meets the standard. 
2, pneumatic. Hydraulic test pressure of the intake branch pipe by what pressure test, no less than 5 seconds is not maintained at a predetermined pressure value, does not leak, the conventional supply hydraulic pressure test is 2.45MPa. Pneumatic pressure 
   force test is P = 0.5 MPAa. 
3. Corrosion test: The corrosion-resistant steel pipes supplied by the industrial steel pipes shall be tested for corrosion resistance according to the standard regulations or the corrosion methods agreed by both parties, and there shall be no tendency to intergranular corrosion. 
4. Process performance test: flattening test, tensile test, impact test, flare test, hardness test, metallographic test, bending 
test, non-destructive testing (including eddy current testing, X-ray inspection and ultrasonic testing).
5. Execution standard: 
　 China: GB/T14975-2002.GB/T14976-2002.GB13296-91.GB9948-88. 
　　　　 GB5310-95.GB2270-80 
　 United States: ASTM A213/A213-99a.ASTN312/A312M-00b.ASTM A269-00.ASTMA511-96.　
　 Japan: JIS3463.JIS3446.JIS3448.JIS3459　
　 Germany: DIN2462