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ANSI / ASME · Class 1500

Family: ANSI / ASME flanges
Reference: Class 1500 (1500 lb)
Standard: ASME B16.5

Dimensional drawing

Welding Neck flange · WN

Dimensioned technical drawing of Welding Neck flange · WN · class 1500 · Texas Flange

Threaded flange

Dimensioned technical drawing of Threaded flange · class 1500 · Texas Flange

Slip-On flange · SO

Dimensioned technical drawing of Slip-On flange · SO · class 1500 · Texas Flange

Lap Joint flange

Dimensioned technical drawing of Lap Joint flange · class 1500 · Texas Flange

Socket Weld flange · SW

Dimensioned technical drawing of Socket Weld flange · SW · class 1500 · Texas Flange

Blind flange

Dimensioned technical drawing of Blind flange · class 1500 · Texas Flange

Enlargeable sectional drawings. Dimensional tables are in mm; NPS retains its nominal designation. RF height shown in the drawings: 1/4″ = 6.35 mm.

Dimensions · Class 1500

All dimensions in mm. NPS: nominal designation.

NPSOTRXNo. × hole Ø (mm)Bolt circle Ø (mm)L2HB2LBrL3DB3THr
1/2120.6522.3535.0538.104 × Ø22.3582.5560.4521.34--31.7522.353.3031.759.6522.8622.35
3/4130.3025.4042.9344.454 × Ø22.3588.9069.8526.67--35.0527.693.3035.0511.1828.1925.40
1149.3528.7050.8052.324 × Ø25.40101.6073.1533.53--41.4034.543.3041.4012.7035.0528.70
1-1/4158.7528.7063.5063.504 × Ø25.40111.2573.1542.16--41.4043.184.8341.4014.2243.6930.23
1-1/2177.8031.7573.1569.854 × Ø28.70123.9582.5548.26--44.4549.536.3544.4516.0050.0431.75
2215.9038.1092.20104.908 × Ø25.40165.10101.6060.45--57.1561.987.8757.1517.5362.4838.10
2-1/2244.6041.40104.90123.958 × Ø28.70190.50104.9073.15--63.5074.687.8763.5019.0575.4447.75
3266.7047.75127.00133.358 × Ø31.75203.20117.6088.90--73.1590.689.6573.15--91.4450.80
4311.1554.10157.23162.058 × Ø35.05241.30123.95114.30--90.42116.0811.1890.42--116.8457.15
5374.6573.15185.67196.858 × Ø41.40292.10155.70141.22--104.90143.7611.18104.90--144.5363.50
6393.7082.55215.90228.6012 × Ø38.10317.50171.45168.40--119.13170.6912.70119.13--171.4569.85
8482.6092.20270.00292.1012 × Ø44.45393.70212.85219.20--143.00221.4912.70143.00--222.2576.20
10584.20107.95323.85368.3012 × Ø50.80482.60254.00273.05--158.75276.3512.70177.80--277.3784.07
12673.10123.95381.00450.8516 × Ø54.10571.50282.70323.85--181.10327.1512.70219.20--328.1792.20
14749.30133.35412.75495.3016 × Ø60.45635.00298.45355.60------12.70241.30--360.17--
16825.50146.05469.90552.4516 × Ø66.80704.85311.15406.40------12.70260.35--411.23--
18914.40162.05533.40596.9016 × Ø73.15774.70327.15457.20------12.70276.35--462.28--
20984.25177.80584.20641.3516 × Ø79.50831.85355.60508.00------12.70292.10--514.35--
241168.40203.20692.15762.0016 × Ø92.20990.60406.40609.60------12.70330.20--615.95--

NPS 1/2

NPS1/2
O120.65
T22.35
R35.05
X38.10
No. × hole Ø (mm)4 × Ø22.35
Bolt circle Ø (mm)82.55
L260.45
H21.34
B2--
L31.75
B22.35
r3.30
L331.75
D9.65
B322.86
THr22.35

NPS 3/4

NPS3/4
O130.30
T25.40
R42.93
X44.45
No. × hole Ø (mm)4 × Ø22.35
Bolt circle Ø (mm)88.90
L269.85
H26.67
B2--
L35.05
B27.69
r3.30
L335.05
D11.18
B328.19
THr25.40

NPS 1

NPS1
O149.35
T28.70
R50.80
X52.32
No. × hole Ø (mm)4 × Ø25.40
Bolt circle Ø (mm)101.60
L273.15
H33.53
B2--
L41.40
B34.54
r3.30
L341.40
D12.70
B335.05
THr28.70

NPS 1-1/4

NPS1-1/4
O158.75
T28.70
R63.50
X63.50
No. × hole Ø (mm)4 × Ø25.40
Bolt circle Ø (mm)111.25
L273.15
H42.16
B2--
L41.40
B43.18
r4.83
L341.40
D14.22
B343.69
THr30.23

NPS 1-1/2

NPS1-1/2
O177.80
T31.75
R73.15
X69.85
No. × hole Ø (mm)4 × Ø28.70
Bolt circle Ø (mm)123.95
L282.55
H48.26
B2--
L44.45
B49.53
r6.35
L344.45
D16.00
B350.04
THr31.75

NPS 2

NPS2
O215.90
T38.10
R92.20
X104.90
No. × hole Ø (mm)8 × Ø25.40
Bolt circle Ø (mm)165.10
L2101.60
H60.45
B2--
L57.15
B61.98
r7.87
L357.15
D17.53
B362.48
THr38.10

NPS 2-1/2

NPS2-1/2
O244.60
T41.40
R104.90
X123.95
No. × hole Ø (mm)8 × Ø28.70
Bolt circle Ø (mm)190.50
L2104.90
H73.15
B2--
L63.50
B74.68
r7.87
L363.50
D19.05
B375.44
THr47.75

NPS 3

NPS3
O266.70
T47.75
R127.00
X133.35
No. × hole Ø (mm)8 × Ø31.75
Bolt circle Ø (mm)203.20
L2117.60
H88.90
B2--
L73.15
B90.68
r9.65
L373.15
D--
B391.44
THr50.80

NPS 4

NPS4
O311.15
T54.10
R157.23
X162.05
No. × hole Ø (mm)8 × Ø35.05
Bolt circle Ø (mm)241.30
L2123.95
H114.30
B2--
L90.42
B116.08
r11.18
L390.42
D--
B3116.84
THr57.15

NPS 5

NPS5
O374.65
T73.15
R185.67
X196.85
No. × hole Ø (mm)8 × Ø41.40
Bolt circle Ø (mm)292.10
L2155.70
H141.22
B2--
L104.90
B143.76
r11.18
L3104.90
D--
B3144.53
THr63.50

NPS 6

NPS6
O393.70
T82.55
R215.90
X228.60
No. × hole Ø (mm)12 × Ø38.10
Bolt circle Ø (mm)317.50
L2171.45
H168.40
B2--
L119.13
B170.69
r12.70
L3119.13
D--
B3171.45
THr69.85

NPS 8

NPS8
O482.60
T92.20
R270.00
X292.10
No. × hole Ø (mm)12 × Ø44.45
Bolt circle Ø (mm)393.70
L2212.85
H219.20
B2--
L143.00
B221.49
r12.70
L3143.00
D--
B3222.25
THr76.20

NPS 10

NPS10
O584.20
T107.95
R323.85
X368.30
No. × hole Ø (mm)12 × Ø50.80
Bolt circle Ø (mm)482.60
L2254.00
H273.05
B2--
L158.75
B276.35
r12.70
L3177.80
D--
B3277.37
THr84.07

NPS 12

NPS12
O673.10
T123.95
R381.00
X450.85
No. × hole Ø (mm)16 × Ø54.10
Bolt circle Ø (mm)571.50
L2282.70
H323.85
B2--
L181.10
B327.15
r12.70
L3219.20
D--
B3328.17
THr92.20

NPS 14

NPS14
O749.30
T133.35
R412.75
X495.30
No. × hole Ø (mm)16 × Ø60.45
Bolt circle Ø (mm)635.00
L2298.45
H355.60
B2--
L--
B--
r12.70
L3241.30
D--
B3360.17
THr--

NPS 16

NPS16
O825.50
T146.05
R469.90
X552.45
No. × hole Ø (mm)16 × Ø66.80
Bolt circle Ø (mm)704.85
L2311.15
H406.40
B2--
L--
B--
r12.70
L3260.35
D--
B3411.23
THr--

NPS 18

NPS18
O914.40
T162.05
R533.40
X596.90
No. × hole Ø (mm)16 × Ø73.15
Bolt circle Ø (mm)774.70
L2327.15
H457.20
B2--
L--
B--
r12.70
L3276.35
D--
B3462.28
THr--

NPS 20

NPS20
O984.25
T177.80
R584.20
X641.35
No. × hole Ø (mm)16 × Ø79.50
Bolt circle Ø (mm)831.85
L2355.60
H508.00
B2--
L--
B--
r12.70
L3292.10
D--
B3514.35
THr--

NPS 24

NPS24
O1168.40
T203.20
R692.15
X762.00
No. × hole Ø (mm)16 × Ø92.20
Bolt circle Ø (mm)990.60
L2406.40
H609.60
B2--
L--
B--
r12.70
L3330.20
D--
B3615.95
THr--
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Catalogue dimensions converted using 1 inch = 25.4 mm, rounded to two decimal places. NPS retains its nominal inch designation. Dimension letters correspond to the drawing. Unspecified values remain blank.

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Burgos motorway, exit 36

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