ANSI/ AMSE B16.5 class 150 socket weld flange

ANSI/ASME B16.5 standard covers pressure,temperature,ratings,materials,dimensions,tolerances,marking, testing,and methods of designating openings for pipe flanges and flanged fittings.Socket weld flange dimensions are covered in ANSI/ASME B16.5 for size NPS ½” to 3″.

ANSI/ AMSE B16.5 class 150 socket weld flange dimensions:

ANSI ASME B16.5 Class 150 Socket Weld Flange Dimensions

ANSI ASME B16.5 Class 150 Socket Weld Flange Dimensions

Pipe

Flange

Hub

Raised Face

Drilling Data

Weight

Nominal Pipe Size A B C D E K F G H I J
Outside Diameter Overall Diameter Inside Diameter Flange Thickness min Overall Length Socket Diameter Depth of Socket Hub Diameter Face Diameter No. of Holes Bolt Hole Diameter Diameter of Circle of Holes kg/piece
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
½ 0.840 21.30 3.500 88.90 0.620 15.70 0.440
11.20
0.620 15.70 0.880 22.40 0.380 9.600 1.190 30.20 1.380 35.10 4 0.620 15.70 2.380 60.45 0.42
¾ 1.050 26.70 3.880 98.60 0.820 20.80 0.500
12.70
0.620 15.70 1.090 27.70 0.440 11.10 1.500 38.10 1.690 42.90 4 0.620 15.70 2.750 69.85 0.59
1 1.315 33.40 4.250 108.0 1.050 26.70 0.560
14.20
0.690 17.50 1.360 34.50 0.500 12.70 1.940 49.30 2.000 50.80 4 0.620 15.70 3.120 79.25 0.81
1 ¼ 1.660 42.20 4.620 117.3 1.380 35.10 0.620
15.70
0.810 20.60 1.700 43.20 0.560 14.20 2.310 58.70 2.500 63.50 4 0.620 15.70 3.500 88.90 1.07
1 ½ 1.900 48.30 5.000 127.0 1.610 40.90 0.690
17.50
0.880 22.30 1.950 49.50 0.620 15.70 2.560 65.00 2.880 73.15 4 0.620 15.70 3.880 98.60 1.36
2 2.375 60.30 6.000 152.4 2.070 52.60 0.750
19.10
1.000 25.40 2.440 62.00 0.690 17.50 3.060 77.70 3.620 91.90 4 0.750 19.10 4.750 120.7 2.10
2 ½ 2.875 73.00 7.000 177.8 2.470 62.70 0.880
22.40
1.120 28.40 2.940 74.70 0.750 19.00 3.560 90.40 4.120 104.6 4 0.750 19.10 5.500 139.7 3.33
3 3.500 88.90 7.500 190.5 3.070 78.00 0.940
23.90
1.190 30.20 3.570 90.70 0.810 20.60 4.250 108.0 5.000 127.0 4 0.750
19.10
6.000
152.4
3.90

Notes:

  • Dimension B corresponds to the pipe inside diameter. Values quoted assume 40S/Standard wall thickness.
  • Weights are based on manufacturer’s data and are approximate.

Specifications of ANSI/ASME B16.5 flange:

Types of ANSI/ASME B16.5 forged flanges:

ANSI ASME B16.5 weld neck flange drawing

ANSI ASME B16.5 weld neck flange drawing

Weld neck flange(WN flange) is circumferentially welded into the system at its neck which means that the integrity of the butt
welded area can be easily examined by radiography.The bores of both pipe and flange match,which reduces turbulence and erosion inside the pipeline.The weld neck is therefore favoured in critical applications.

ANSI ASME B16.5 blind flange drawing

ANSI ASME B16.5 blind flange drawing

Blind flange is used to blank off pipelines,valves and pumps,it can also be used as an inspection cover.It is sometimes referred to as a blank flange.

ANSI ASME B16.5 slip on flange drawing

ANSI ASME B16.5 slip on flange drawing

Slip on flange(SO flange) is slipped over the pipe and then fillet welded.Slip-on flanges are easy to use in fabricated applications.

ANSI ASME B16.5 lap joint flange drawing

ANSI ASME B16.5 lap joint flange drawing

Lap joint flange(LJ flange) is always used with either a stub end
or taft which is butt welded to the pipe with the flange loose behind it.
This means the stub end or taft always makes the face.The lap joint is favoured in low pressure applications because it is easily assembled and aligned.To reduce cost these flanges can be supplied without a hub and/or in treated,coated carbon steel.

ANSI ASME B16.5 socket weld flange drawing

ANSI ASME B16.5 socket weld flange drawing

Socket weld flange(SW flange) is counter bored to accept the pipe before being fillet welded.The bore of the pipe and flange are both the same therefore giving good flow characteristics.

ANSI ASME B16.5 threaded flange drawing

ANSI ASME B16.5 threaded flange drawing

Threaded flange is referred to as either threaded or screwed.It is used to connect other threaded components in low pressure, non-critical applications.No welding is required.

ANSI ASME B16.5 ring type joint flange drawing

ANSI ASME B16.5 ring type joint flange drawing

Ring type joint is a method of ensuring leak proof flange connection at high pressures.A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal.This jointing method can be employed on weld neck flanges,slip on flange and blind flanges.

Materials of ANSI/ASME B16.5 class 150 socket weld flange:

Carbon steel ANSI/ASME B16.5 socket weld flange:

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

Stainless steel ANSI/ASME B16.5 socket weld flange:

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

Alloy steel ANSI/ASME B16.5 socket weld flange:

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

Related:

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