ANSI/ ASME B16.36 class 300 slip on orifice flange | Hebei Haihao Group

ANSI/ ASME B16.36 class 300 slip on orifice flange

Orifice flange is used to measure the flow rate of the liquids in a piping system,it could be water,gas or other liquids.The orifice flanges are usually used with the orifice plates or meters in the pipe joints.Orifice flanges are manufactured to ANSI/ASME B16.36 standard in multiple size and material grades.In ANSI/ASME B16.36 class 300 there are three types of orifice flange:welding neck orifice flange,slip on orifice flange and threaded orifice flange.And the sealing face of orifice flange can be raised face(RF) or ring type joint(RTJ).

ANSI ASME B16.36 class 300 slip on orifice flange

ANSI ASME B16.36 class 300 slip on orifice flange

ANSI ASME B16.36 class 300 slip on orifice flange

ANSI ASME B16.36 class 300 slip on orifice flange

Dimensions of ANSI/ASME B16.36 class 300 slip on orifice flange:

Nominal pipe size Outside diameter of raised face Outside diameter of flange Thickness of flange,min Length through hub Diameter of hub Bore Diameter of pressure connection Drilling Template Bolt length[3][4]
R O tf Y2 X B2 TT Bolt circle Number of holes Diameter of holes Diameter of bolts Machine bolts Stud bolts
1 50.8 125 36.6 46 54 34.5 6.4 88.9 4 1 1/16 5/8 115 125
73.0 155 36.6 46 70 49.5 6.4 114.3 4 1 3/16 3/4 120 135
2 92.1 165 36.6 48 84 61.9 6.4 127.0 8 1 1/16 5/8 115 125
104.8 190 36.6 49 100 74.6 6.4 149.2 8 1 3/16 3/4 120 135
3 127.0 210 36.6 51 117 90.7 9.5 168.3 8 1 3/16 3/4 120 135
4 157.2 255 36.6 52 146 116.1 12.7 200.0 8 1 3/16 3/4 120 135
6 215.9 320 36.6 52 206 170.7 12.7 269.9 12 7/8 3/4 120 135
8 269.9 380 39.7 60 260 221.5 12.7 330.2 12 1 7/8 125 145
10 323.8 445 46.1 65 321 276.2 12.7 387.4 16 1 1/8 1 145 165
12 381.0 520 49.3 71 375 327.0 12.7 450.8 16 1 1/4 1 1/8 160 180
14 412.8 585 52.4 75 425 359.2 12.7 514.4 20 1 1/4 1 1/8 165 185
16 469.9 650 55.6 81 483 410.5 12.7 571.5 20 1 3/8 1 1/4 180 195
18 533.4 710 58.8 87 533 461.8 12.7 628.6 24 1 3/8 1 1/4 185 205
20 584.2 775 62.0 94 587 513.1 12.7 685.8 24 1 3/8 1 1/4 190 215
24 692.2 915 68.3 105 702 616.0 12.7 812.8 24 1 5/8 1 1/2 210 240

General notes:

  • (a) Dimensions are in millimeters, except for bolts and bolt holes. Reference Mandatory Appendix I for U.S. Customary.
  • (b) Weld neck flanges NPS 3 and smaller are identical to Class 600 flanges and may be so marked.
  • (c) All other dimensions are in accordance with ASME B16.5.

Notes:

  • [1] Other NPT sizes may be furnished if required.
  • [2] For slip-on and threaded flanges,verify that TT drilling extends to inside diameter of pipe after assembly and is free from burrs.
  • [3] Bolt lengths include allowance for orifice and gasket thickness of 6 mm (0.25 in.) for NPS 1–12 and 10 mm (0.38 in.) for NPS 14–24.
  • [4] In conformance with ASME B16.5,stud bolt lengths do not include point heights.
  • [5] Bore diameter of weld neck flanges is to be specified by the purchaser.
  • [6] Threaded flanges are furnished in NPS 1-8 only.

Materials of ANSI/ASME B16.36 welding neck orifice flange:

Carbon steel: ASTM A105,A350 LF2,SS400,P235GH,P250GH,C22.8,Q235,20#,16Mn.

Stainless steel: ASTM A182 F304,F304L,F316,F316L,F321,F347,F310,F44,F51 etc.

Alloy steel: ASTM A694 F42,F46,F52,F56,F60,F65,F70,A182 F5,F9,F91,F12,F11,F22 etc.

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

  • ANSI/ASME B16.36 class 300 welding neck orifice flange
  • ANSI/ASME B16.36 class 300 slip on orifice flange
  • ANSI/ASME B16.36 class 300 threaded orifice flange
  • ANSI/ASME B16.36 class 400 welding neck RF orifice flange
  • ANSI/ASME B16.36 class 400 welding neck RTJ orifice flange
  • ANSI/ASME B16.36 class 600 welding neck RF orifice flange
  • ANSI/ASME B16.36 class 600 welding neck RTJ orifice flange
  • ANSI/ASME B16.36 class 900 welding neck RF orifice flange
  • ANSI/ASME B16.36 class 900 welding neck RTJ orifice flange
  • ANSI/ASME B16.36 class 1500 welding neck RF orifice flange
  • ANSI/ASME B16.36 class 1500 welding neck RTJ orifice flange
  • ANSI/ASME B16.36 class 2500 welding neck RF orifice flange
  • ANSI/ASME B16.36 class 2500 welding neck RTJ orifice flange

Haihao Group manufacture & supply piping products more than 30 years,which contain seamless steel pipes,welded steel pipes(ERW,SSAW,LASW pipes),butt welding & forged pipe fittings(elbow,tee,reducer,coupling,cap,bend,cross,nipple,outlet,etc) and forged flanges(weld neck flange,blind flange,slip on flange,lap joint flange,threaded flange,socket weld flange,orifice flange,plate flange,etc).If you want to know more about our piping products,please email us:sales@haihaogroup.com

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