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Pooja Steel India

Pooja Steel India

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Orifice Flanges

Pooja Steel India > Orifice Flanges
Orifice Flanges

Orifice Flanges are designed for use with orifice meters to measure the flow rate of liquids or gases in pipelines. They feature pressure tappings machined into the flange, eliminating the need for separate tappings in the pipe wall. These flanges come with Raised Faces or RTJ facings and are suitable for high-pressure and high-temperature services.

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Description

Orifice Flanges: Standard Specifications & Material Grades
Specification Description
Dimensions ANSI B16.5, MSS SP44, Custom Drawings
Size Range 1/2″ (15 NB) to 48″ (1200NB)
Pressure Classes 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
DIN Standards DIN2527, DIN2642, DIN2635, DIN2638, DIN2673, etc.
BS Standards BS4504, PN6, PN10, PN16, PN25, PN40, etc.
API Standards PSI-2000/3000/5000/10000, etc.
JIS Standards 2220-2004 5k/10k/16k, etc.
Flange Face Types FF (Flat Face), RF (Raised Face), RTJ (Ring Type Joint)

Material & Grades:

Orifice flanges are available in various materials to suit different pressure, temperature, and corrosion resistance requirements. Here are some common options:

  • Stainless Steel: ASTM A 182, A 240 (304, 316, 321, 347, 904L)
  • Duplex & Super Duplex Steel: ASTM / ASME A/SA 182 F 44, F 51, F 53, F 55, F 60, F 61
  • Carbon Steel: ASTM / ASME A/SA 105, A 350, A 181 LF 2, A516 Gr.70, A694 (Cost-effective for low-pressure applications)
  • Low Temp Carbon Steel: ASTM A350 LF2, LF3
  • Alloy Steel: ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F22, F91
  • Copper Alloy Steel: ASTM SB 61, SB62, SB151, SB152
  • Nickel Alloy: ASTM SB564, SB160, SB472, SB162, etc.

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