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Nominal Pipe Size and Schedule

 

برائے نام پائپ کا سائز اور شیڈول

Nominal Pipe Size OD

نیچے دیے گئے فارمولے کا استعمال کرتے ہوئے، آپ پائپ کے اندرونی قطر (ID) کی مدد سے باہر کے قطر (OD) اور پائپ کی موٹائی کا حساب لگا سکتے ہیں۔

پائپ آئی ڈی = [پائپ او ڈی - (2×پائپ کی دیوار کی موٹائی)]

کاربن سٹیل اور سٹینلیس سٹیل پائپ کے لیے طول و عرض کی رواداری

عام طول و عرض کی رواداری ASTM A530 میں درج ہے۔ تاہم، ہر پروڈکٹ کی اپنی ضروریات ہوتی ہیں، اور جب اس تصریح میں دیا جاتا ہے، تو وہ A530 کے اوپر اور اس سے اوپر حکومت کرے گ

NPS 18 to NPS 312

DN does not exactly correspond to a size in millimeters, because ISO 6708 defines it as being a dimensionless specification only indirectly related to a diameter. The ISO 6708 sizes provide a metric name for existing inch sizes, resulting in a 1:1 correlation between NPS and DN sizes. ISO 6708 does not include values for "DN 6" or "DN 8", however ASME B36.10M list the "DN 6" and "DN 8" . Also, the European Standard EN 12 516-1 (Industrial valves - Shell design strength - Part 1: Tabulation method for steel valve shells) specifies the dimensions "DN 6" and "DN 8", respectively their equivalents NPS 18 "and NPS 14".

Tolerance: The tolerance on pipe OD is +164 (0.0156) inch (0.40 mm), −132 (0.0312) inch (0.79 mm).[9]

As per ASME B36.10M -2018 Pipe wall thickness are rounded to nearest 0.01 mm (0.00039 in), while converting wall thickness from inch to millimetre.

NPS 4 to NPS 9[edit]

NPS[7]

DN[2]

OD

[in (mm)]

Wall thickness [in (mm)]

Sch. 5s

Sch. 10s/10

Sch. 20

Sch. 30

Sch. 40s/40

/STD

Sch. 60

Sch. 80s/80

/XS

Sch. 100

Sch. 120

Sch. 140

Sch. 160

XXS[7]

4

100

4.500 (114.30)

0.083 (2.108)

0.120 (3.048)

0.188 (4.775)

0.237 (6.020)

0.337 (8.560)

0.437 (11.100)

0.531 (13.487)

0.674 (17.120)

4

+

12

115

5.000 (127.00)

0.247 (6.274)

0.355 (9.017)

0.710 (18.034)

5

125

5.563 (141.30)

0.109 (2.769)

0.134 (3.404)

0.258 (6.553)

0.375 (9.525)

0.500 (12.700)

0.625 (15.875)

0.750 (19.050)

6

150

6.625 (168.28)

0.109 (2.769)

0.134 (3.404)

0.280 (7.112)

0.432 (10.973)

0.562 (14.275)

0.719 (18.263)

0.864 (21.946)

7

7.625 (193.68)

0.301 (7.645)

0.500 (12.700)

0.875 (22.225)

8

200

8.625 (219.08)

0.109 (2.769)

0.148 (3.759)

0.250 (6.350)

0.277 (7.036)

0.322 (8.179)

0.406 (10.312)

0.500 (12.700)

0.593 (15.062)

0.719 (18.263)

0.812 (20.625)

0.906 (23.012)

0.875 (22.225)

9

9.625 (244.48)

0.342 (8.687)

0.500 (12.700)

NPS 10 to NPS 24

NPS[7]

DN[2]

OD

[in (mm)]

Wall thickness [in (mm)]

Sch. 5s

Sch. 10

Sch. 10s

Sch. 20

Sch. 30

Sch. Std./40S

10

250

10.75 (273.05)

0.134 (3.404)

0.165 (4.191)

0.165 (4.191)

0.250 (6.350)

0.307 (7.798)

0.365 (9.271)

12

300

12.75 (323.85)

0.156 (3.962)

0.180 (4.572)

0.180 (4.572)

0.250 (6.350)

0.330 (8.382)

0.375 (9.525)

14

350

14.00 (355.60)

0.156 (3.962)

0.250 (6.350)

0.188 (4.775)

0.312 (7.925)

0.375 (9.525)

0.375 (9.525)

16

400

16.00 (406.40)

0.165 (4.191)

0.250 (6.350)

0.188 (4.775)

0.312 (7.925)

0.375 (9.525)

0.375 (9.525)

18

450

18.00 (457.20)

0.165 (4.191)

0.250 (6.350)

0.188 (4.775)

0.312 (7.925)

0.437 (11.100)

0.375 (9.525)

20

500

20.00 (508.00)

0.188 (4.775)

0.250 (6.350)

0.218 (5.537)

0.375 (9.525)

0.500 (12.700)

0.375 (9.525)

22

550

22.00 (558.80)

0.188 (4.775)

0.250 (6.350)

0.218 (5.537)

0.375 (9.525)

0.500 (12.700)

0.375 (9.525)

24

600

24.00 (609.60)

0.218 (5.537)

0.250 (6.350)

0.250 (6.350)

0.375 (9.525)

0.562 (14.275)

0.375 (9.525)


NPS[7]

DN[2]

Wall thickness [in (mm)]

Sch. 40

Sch. 60

Sch. 80s/XS

Sch. 80

Sch. 100

Sch. 120

Sch. 140

Sch. 160

10

250

0.365 (9.271)

0.500 (12.700)

0.500 (12.700)

0.594 (15.088)

0.718 (18.237)

0.843 (21.412)

1.000 (25.400)

1.125 (28.575)

12

300

0.406 (10.312)

0.562 (14.275)

0.500 (12.700)

0.687 (17.450)

0.843 (21.412)

1.000 (25.400)

1.125 (28.575)

1.312 (33.325)

14

350

0.437 (11.100)

0.593 (15.062)

0.500 (12.700)

0.750 (19.050)

0.937 (23.800)

1.093 (27.762)

1.250 (31.750)

1.406 (35.712)

16

400

0.500 (12.700)

0.656 (16.662)

0.500 (12.700)

0.843 (21.412)

1.031 (26.187)

1.218 (30.937)

1.437 (36.500)

1.594 (40.488)

18

450

0.562 (14.275)

0.750 (19.050)

0.500 (12.700)

0.937 (23.800)

1.156 (29.362)

1.375 (34.925)

1.562 (39.675)

1.781 (45.237)

20

500

0.593 (15.062)

0.812 (20.625)

0.500 (12.700)

1.031 (26.187)

1.280 (32.512)

1.500 (38.100)

1.750 (44.450)

1.968 (49.987)

22

550

0.875 (22.225)

0.500 (12.700)

1.125 (28.575)

1.375 (34.925)

1.625 (41.275)

1.875 (47.625)

2.125 (53.975)

24

600

0.687 (17.450)

0.968 (24.587)

0.500 (12.700)

1.218 (30.937)

1.531 (38.887)

1.812 (46.025)

2.062 (52.375)

2.343 (59.512)

NPS 26 to NPS 36[edit]

NPS[7]

DN[2]

OD

[in (mm)]

Wall thickness [in (mm)]

Sch. 5s

Sch. 10s

Sch. 10

Sch. 20/XS

Sch. 30

Sch. 40s/Std.

Sch. 40


26

650

26.000 (660.400)

0.312 (7.925)

0.500 (12.700)

0.375 (9.525)


28

700

28.000 (711.200)

?

0.312 (7.925)

0.500 (12.700)

0.625 (15.875)

0.375 (9.525)


30

750

30.000 (762.000)

0.250 (6.350)

0.312 (7.925)

0.312 (7.925)

0.500 (12.700)

0.625 (15.875)

0.375 (9.525)


32

800

32.000 (812.800)

0.312 (7.925)

0.500 (12.700)

0.625 (15.875)

0.375 (9.525)

0.688 (17.475)


34

850

34.000 (863.600)

0.312 (7.925)

0.500 (12.700)

0.625 (15.875)

0.375 (9.525)

0.688 (17.475)


36

900

36.000 (914.400)

0.312 (7.925)

0.500 (12.700)

0.625 (15.875)

0.375 (9.525)

0.75 (19.05)


Additional sizes (NPS)

NPS






DN[2]

OD

[in (mm)]

Wall thickness

[in (mm)]

Std. Wt.

Sch. XS

Sch. XXS

40

1000

40.000 (1,016.000)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

42

1050

42.000 (1,066.800)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

44

1100

44.000 (1,117.600)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

46

1150

46.000 (1,168.400)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

48

1200

48.000 (1,219.200)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

52

1300

52.000 (1,320.800)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

56

1400

56.000 (1,422.400)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

60

1500

60.000 (1,524.000)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

64

1600

64.000 (1,625.600)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

68

1700

68.000 (1,727.200)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

72

1800

72.000 (1,828.800)

0.375 (9.525)

0.500 (12.700)

1.000 (25.400)

76

1900

76.000 (1,930.400)




80

2000

80.000 (2,032.000)




88

2200

88.000 (2,235.200)




92

2300

92.000 (2,336.800)




96

2400

96.000 (2,438.400)




100

2500

100.000 (2,540.000)




104

2600

104.000 (2,641.600)




108

2700

108.000 (2,743.200)

≥−






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