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ASME B16.36 class 900 welding neck orifice flange

2024-09-29 16:00:58 Hits:36 American Standards / Product Standards

The ASME B16.36 class 900 welding neck orifice flange is a high-pressure flange used in piping systems to measure the flow of fluids, such as gases, liquids, or steam, by incorporating an orifice plate. It adheres to the ASME B16.36 standard, which outlines requirements for orifice flanges, and is designed to withstand class 900 pressure ratings. This flange type is essential in industries requiring precise flow measurement in high-pressure environments.

ASME B16.36 class 900 welding neck orifice flange dimensions:

The flange conforms to the ASME B16.36 standard for orifice flanges and ASME B16.5 for welding neck flanges. This ensures uniformity in dimensions such as flange thickness, bore size, bolt circle diameter, and bolt hole size.

ASME B16.36 Class 900 Welding Neck Orifice Flange Drawing

ASME B16.36 Class 900 Welding Neck Orifice Flange Drawing

Nominal Pipe Size Outside Diameter of Raised Face Outside Diameter of Flange Minumun Thickness of Flange Length Through Hub Welding Neck Ring-Type joint Diameter of Hub Hub Diameter Beginning of Chamfer Bore Diameter of Pressure Connection Drilling Template Length of Stud Bolts(2),(3)
R O tf Y Groove Number Pitch Diameter,P Groove Depth,E Groove Width,F Radius ar Bottom,r Special Oval Ring Height,W X A B TT Diameter of Bolt Circle Number of Holes Diameter of Holes Diameter of Bolts Raised Face Ring Joint
1 2.00 4.88 1.50 3.25 R16 2.000 0.250 0.344 0.03 1.00 2.06 1.32 To be specified by the purchaser ¼ 4.00 4 1.00 7/8 6.00 6.25
1½ 2.88 7.00 1.50 3.50 R20 2.688 0.250 0.344 0.03 1.00 2.75 1.90 ¼ 4.88 4 1.12 1 6.25 6.50
2 3.62 8.50 1.50 4.00 R24 3.750 0.312 0.469 0.03 1.06 4.12 2.38 ¼ 6.50 8 1.00 7/8 6.00 6.50
2½ 4.12 9.62 1.62 4.12 R27 4.250 0.312 0.469 0.03 1.06 4.88 2.88 ¼ 7.50 8 1.12 1 6.50 7.00
3 5.00 9.50 1.50 4.00 R31 4.875 0.312 0.469 0.03 1.06 5.00 3.50 ⅜ 7.50 8 1.00 7/8 6.00 6.50
4 6.19 11.50 1.75 4.50 R37 5.875 0.312 0.469 0.03 1.06 6.25 4.50 ½ 9.25 8 1.25 1⅛ 7.00 7.50
6 8.50 15.00 2.19 5.50 R45 8.312 0.312 0.469 0.03 1.06 9.25 6.63 ½ 12.50 12 1.25 1⅛ 7.75 8.25
8 10.62 18.50 2.50 6.38 R49 10.625 0.312 0.469 0.03 1.06 11.75 8.63 ½ 15.50 12 1.50 13/8 9.00 9.50
10 12.75 21.50 2.75 7.25 R53 12.750 0.312 0.469 0.03 1.06 14.50 10.75 ½ 18.50 16 1.50 13/8 9.50 10.00
12 15.00 24.00 3.12 7.88 R57 15.000 0.312 0.469 0.03 1.06 16.50 12.75 ½ 21.00 20 1.50 13/8 10.25 10.75
14 16.25 25.25 3.38 8.38 R62 16.500 0.438 0.656 0.06 1.31 17.75 14.00 ½ 22.00 20 1.62 1½ 11.00 11.50
16 18.50 27.75 3.50 8.50 R66 18.500 0.438 0.656 0.06 1.44 20.00 16.00 ½ 24.25 20 1.75 15/8 11.50 12.00
18 21.00 31.00 4.00 9.00 R70 21.000 0.500 0.781 0.06 1.56 22.25 18.00 ½ 27.00 20 2.00 17/8 13.00 13.75
20 23.00 33.75 4.25 9.75 R74 23.000 0.500 0.781 0.06 1.56 24.50 20.00 ½ 29.50 20 2.12 2 14.00 14.75
24 27.25 41.00 5.50 11.50 R78 27.250 0.625 1.062 0.09 1.88 29.50 24.00 ½ 35.50 20 2.62 2½ 17.50 18.50

GENERAL NOTES:
(a)Dimensions are in inches.
(b)All other dimensions are in accordance with ASME B16.5.
(c)Ring joint flanges larger than NPS 12 will require angular meter taps as shown in Fig.2.
NOTES:
(1)Other NPT sizes may be fumished if required.
(2)In conformance with ASME B16.5,stud bolt lengths do not include point heights.
(3)Bolt lengths for raised face flanges include allowance for orifice and gasket thickness of 0.25 in.for NPS 3 to NPS 12 and 0.38 in.for NPS 14 to NPS 24.Bolt lengths for ring-type joint flanges include allowance of 0.62 in.for NPS 3 to NPS 10 and 0.75 in.for NPS 12.

ASME B16.36 Class 900 Welding Neck Orifice Flanges are available in a variety of materials to suit different operating environments, including:

  • Carbon steel (e.g., ASTM A105)
  • Stainless steel (e.g., ASTM A182 F304, F316)
  • Alloy steels for more extreme environments, including high-temperature or corrosive conditions.

Material selection is based on factors such as temperature, pressure, and the chemical nature of the fluid being processed.

ASME B16.36 class 900 welding neck orifice flanges are used in industries that require high-pressure fluid control and flow measurement, including:

  • Oil and gas (e.g., refineries, pipelines)
  • Petrochemical and chemical processing
  • Power generation
  • Water treatment

They are particularly suited for high-pressure systems that need reliable and accurate flow measurement of liquids, gases, or steam.

The ASME B16.36 class 900 welding neck orifice flange is an essential component in high-pressure piping systems requiring accurate flow measurement. With its robust welding neck design, this flange offers superior strength and durability in challenging environments. The flange is typically used in industries such as oil and gas, petrochemicals, and power generation, where precise flow control is critical. Its conformance to ASME standards ensures reliability, compatibility, and performance in high-pressure applications.

Haihao Group can provide a variety orifice flange,as follows:

Haihao Group manufacture & supply & export pipeline products more than 30 years,which contain butt welding pipe fittings(elbows,tees,reducers,caps,bends,crosses,etc),forged pipe fittings(socket weld/threaded elbows, tees, reducers, crosses, couplings, union, outlet, nipple, etc),steel pipes(seamless steel pipes, SAW/ERW steel pipes, casing and tubing pipes,etc) and forged flanges(weld neck flange, slip on flange, blind flange, lap joint flange, plate flange, threaded flange, socket weld flange, orifice flange, spectacle blind flange, weld overlay cladding flange,etc).We supply the products in different standards such as ANSI/ASME, ASTM, BS, EN, JIS, GOST, ISO, MSS, etc.If you want to know more about our pipeline products,please email us:sales@haihaogroup.com

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