Saturday, March 12, 2011

Standard pipeline ball valve













Pipeline ball valve design, manufacture, test specification standards are API standard 6D, the standard proposals for oil and gas industry to meet international standards of ISO13623 requirements of pipeline systems, the corresponding national standard is GB:

1, Full Bore or reduced bore diameter size according to the API standards 6D.

2, pipeline pressure valve according to API standard grade 6D, pressure temperature rating by ASME16.34.

3, a long pipeline to connect the valve according to API standards and tolerances 6D.

4, flange end of the size 24 "The following ANSI B16.5; 26" or above by ANSI B16.47.

5, butt welding end size according to ASME B 16.25.

6, flange face processing in accordance with ANSI B16.5.

7, excretory pore and the discharge hole diameter according to API standards 6D.

8, pressure test according to API Standard 6D and API Standard 598.

9, the fire safety design and test in accordance with BS6755, Part II; API Standard 607, API standard 6FA.

10, the material should be in accordance with ASME standards, as well as the corresponding NACE MR 0175, NACE MR 0103 standard.

11, valves and welding in line with the ASME Boiler Pressure Vessel Code section IX Welding and Brazing volume assessment, BS7448 Part II fracture toughness tests.

12, valve testing in line with the ASME Boiler and Pressure Vessel section V non-destructive testing, vol.

13, valve tags shall be in accordance with MSS-SP-25 or API Standard 6D.

14, ASME Boiler and Pressure Vessel Code section VIII rules of volume pressure vessel manufacture.




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