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Ring Joint Facings - ASME/ANSI B16.5 & B16.47-4

Ring joint facing dimensions - ASME/ANSI B16.5
and B16.47 Series A (MSS SP-44) and Series B (API 605) (Continued)
Notes
- Ring joint gasket dimensions conform to ASME B16.20 (not covered in this summary).
- Use Class 600 lb in sizes NPS 1/2 to NPS 31/2 for Class 400 lb.
- Use Class 1500 lb in sizes NPS 1/2 to NPS 21/2 for Class 900 lb.
- Tolerances are as shown in the table below.
1 The height of the raised portion is equal to the depth of groove dimension L, but is not subject to the tolerances for L.
2 Ring joints with lapped flanges in Classes 300 lb and 600 lb use R30 instead of R31.
Ring joint facing tolerances (ASME/ANSI B16.5 and B16.47)
Basic requirements for Material and Fitting

Requirements are valid for normal case, in special case you have to contact the technical department.

Slip-On Flanges, SO Flange
Common flange types
Anchor flange
Specialty flange
150LB Carbon steel forged flange
Material Grades
Custom pipe flanges can be manufactured from a wide variety of material grades.




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