ASTM A182 F5 Alloy Steel Orifice Flange Forged WNRF Flange for Industries

An orifice flange is commonly used to measure the flow of fluids. The flange features a couple of bolt holes for attachment to a pipe or another flange. It is also machined to accept an orifice plate, which is used to restrict flow and create a pressure drop that can be measured. This type of flange facilitates flow measurement via an orifice plate, which creates a pressure differential for flow rate calculation. Includes pressure tapings (upstream/downstream) and jack screws for plate installation. Weld neck means the flange has a long tapered hub that can be welded to a pipe, which is good for high-pressure/temperature applications.

ASTM A182 F5 Alloy Steel Flange Chemical Composition

ASTM A182 F5 Alloy Steel Flange Mechanical Properties

Flanges Grades
Stainless Steel Flange: F304, F304L, F304H, F316, F316L, F316Ti, F310, F310S, F321, F321H, F317, F317L, F347, F347H, F904L etc
Duplex Steel Flange: UNS S31803, 2205, S31254 (254SMO)
Super Duplex Steel Flange : UNS S32750, UNS S32760, UNS S32304, S31500
Carbon Steel Flange: ASTM A105, A105N etc.
Alloy Steel Flange: F1, F11, F22, F5, F9, F91 etc.
Nickel Alloy Flange as below
Monel 400 & K500,
Inconel 600, 601, 617, 625, 690, 718, X-750.
Incolloy 800, 800H, 800HT, 825, 925.
Hastelloy C22, C4, C276, S, C2000, G-30, G-35, X, N, B, B-2, B-3.
Copper Alloys Flanges: Copper, Brass & Gunmetal

Industry-Specific Applications

• Oil & Gas: Metering crude oil in high-pressure pipelines (e.g., API 14.3/AGA-3 standards).

• Power Generation: Steam flow measurement in turbines (ASME PTC 6 compliant).

• Petrochemical: Ethylene/cracker unit feed lines (resists hydrogen embrittlement).

• Nuclear: Auxiliary cooling systems (ASTM A182 F5 is not for primary loops but used in secondary circuits).