| Customization: | Available |
|---|---|
| Standard: | ANSI, DIN, GB, JIS, GOST |
| Type: | Welding Flange |
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ASME B16.5 standard covers steel pipe flanges and flanged fittings from NPS ½" through NPS 24" in pressure classes 150 to 2500. This includes pressure ratings, dimensions, tolerances, materials, marking, and testing. ASME B16.5 and ANSI B16.5 only cover sizes up to 24 inches. For bigger sizes, ASME B16.47 standard covers pipe flanges in sizes 26" through 60" and in pressure class ratings 75, 150, 300, 400, 600, and 900. Then, ASME B16.47 is further divided into ASME B16.47 Series A and ASME B16.47 Series B flanges for Blinds and Weldnecks.
The designation formerly referred to as MSS SP-44 flanges are now considered ASME B16.47 Series A flanges, while API 605 flanges are now ASME B16.47 Series B flanges. Materials covered in this standard are the same as ASME B16.5 except for nickel alloys. Due to this, they share the same pressure-temperature chart for the selection of flange materials.
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