ASME B16.47 standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing for pipe flanges in sizes NPS 26 through NPS 60 and in ratings Classes 75, 150, 300, 400, 600, and 900.
ASME B16.47 provides two series of flange dimensions and two flange types. Series A specifies flange dimensions for general use flanges, which are originated from MSS SP 44 and covering Class 150, Class 300, Class 400, Class 600, and Class 900. Series B specifies flange dimensions for compact flanges that, in most cases, have smaller bolt circle diameters than Series A flanges.
Series B flange was also formerly known as API 605 flange.At the request of the American Petroleum Institute (API), flange dimensions of ASME B16.47 Series B are provided in accordance with the API standard 605. The two series of flanges are, in general, not interchangeable. ASME B16.47 provides two flange types, welding neck and blind, can be furnished for both series of flanges.
Flange Type：
Welding neck，Blind.
Material:
ASTM A105，ASTM A350 Gr. LF2，ASTM A350 Gr. LF6 Cl.1，ASTM A350 Gr. LF3，ASTM A350 Gr. LF6 Cl.2，ASTM A350 Gr. LF1 Cl.1，ASTM A182 Gr. F1，ASTM A182 Gr. F2，ASTM A182 Gr. F11 Cl.2，ASTM A182 Gr. F22 Cl.3，ASTM A182 Gr. F5a，ASTM A182 Gr. F9，ASTM A182 Gr. F91，ASTM A182 Gr. F12 Cl.2，ASTM A182 Gr. F5，ASTM A182 Gr. F92，ASTM A182 Gr. F304，ASTM A182 Gr. F304H，ASTM A182 Gr. F316，ASTM A182 Gr. F316H，ASTM A182 Gr. F317，ASTM A182 Gr. F304L，ASTM A182 Gr. F316L，ASTM A182 Gr. F317L，ASTM A182 Gr. F321，ASTM A182 Gr. F321H，ASTM A182 Gr. F347，ASTM A182 Gr. F347H，ASTM A182 Gr. F348，ASTM A182 Gr. F348H，ASTM A182 Gr. F310，ASTM A182 Gr. F44，ASTM A182 Gr. F51，ASTM A182 Gr. F53，ASTM A182 Gr. F55，ASTM B462 Gr. N08020，ASTM B564 Gr. N02200，ASTM B564 Gr. N04400，ASTM B564 Gr. N06600，ASTM B564 Gr. N08800，ASTM B462 Gr. N10665，ASTM B462 Gr. N10675，ASTM B462 Gr. N10276，ASTM B564 Gr. N06625，ASTM B564 Gr. N08825，ASTM B462 Gr. N06022，ASTM B462 Gr. N06200，ASTM B572 Gr. R30556，ASTM A479 Gr. N08904，ASTM B462 Gr. N08367，ASTM B564 Gr. N08031，ASTM B462 Gr. N06030，ASTM B462 Gr. N06035，ASTM B564 Gr. N08810，ASTM B511 Gr. N08330，ASTM B564 Gr. N06230.
Surface Treatment：
Epoxy Coated，Coated With Anti-Rust Oil Coating，Transparent paint，Blue Paint，Black Paint，Yellow Paint，Electrogalvanizing，Hot dip galvanizing.
End Flange Facings：
Raised Face，Ring Joint Face.
Connection Type：
Welding
Test Method：
PT penetrant inspection, Direct-reading Spectrograph, UT trasonic flaw detector, X-ray detector, Magnetic particle detector.
Production process：
Free forging flange, Plate cutting flange, Ring rolling forging flange.
Finish Type：
Stock Finish,Spiral Serrated,Concentric Serrated,Smooth Finish.