Line blanks flange is ASME B16.48. In addition to the Pipe Flanges Spacer Ring Dimensions, this standard also envelopes parameters such as pressure-temperature ratings, materials, marking, tolerances, as well as testing for operating line blanks. The ASME B16.48 Spectacle Blind Flange is available across different markets in sizes NPS 1/2 through NPS 24, whereas the pressure class rating of ASME B16.48 is as follows i.e. 150, 300, 600, 900, 1500, and 2500.
Line blanks Flange is a safety device that can be used to isolate a section of line or piece of equipment. Similar to any flanges a spectacle blind flange is used when the line or equipment in a piping system needs to either be inspected, modified or removed from service. Both the Spacer & Blind ASME B16 48 are different than a valve since the blind is a permanent or long term isolation device.
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.
Flange Technical：
Free forging flange, Plate cutting flange, Ring rolling forging flange.
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.
End Flange Facings：
Raised Face, Ring Joint Face.