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Home » News » Alloy & Carbon Steel SCH 40 Pipe Size Chart as per ASME B36.10

Alloy & Carbon Steel SCH 40 Pipe Size Chart as per ASME B36.10

Views: 0     Author: Site Editor     Publish Time: 2022-04-02      Origin: Site

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Steel pipes are available in various grades. These grades are also bifurcated into schedules. A particular schedule has a set of standards that measures the thickness of the pipe. As the number increases the thickness of the pipe also increases. Schedule 40 Steel Pipe is one such pipe that is versatile and has proven performance. These pipes can be coated with zinc in 2 different methods, in-line Galvanization, and hot-dip galvanization. A hot-dip galvanization of sch 40 pipe allows the zinc to bond with the pipe. schedule 40 pipe pressure ratings are also said to be regular and of a high strength grade. The outer diameter and wall thickness of a pipe can be obtained by NPS and scheduled pipes. For instance, NPS 14 schedule 40 pipes will have an outside diameter of 14 cm and a wall thickness of 0.437 inches. The schedule number determines the inside and outside diameter of the pipe. 


schedule 40 pipes dimensions are mentioned in the above table. The schedule 40 steel pipes weight also differs as per the size of the pipes. In general, the sch 40 pipes weight per foot accounts for 1.68 lbs. As each pipes has its own advantage so does the schedule  40 pipes. These schedule 40 pipes dimensions have thinner walls hence it is said to be the best for applications with low water pressure. One needs to be careful that the sch 40 pipes dimensions meet the requirement of your application. It is as strong as the strength of its weakest point. A difference in pressure can immediately affect its performance. 

The sch 40 pipes thickness can be determined from the table given. Previously the schedule 40 steel pipes dimensions were divided into 3 sections, standard weight (STD), double extra strong, (XXS), and extra strong (XS). these classifications were based on the size of the pipes. Though these classifications were expected to be phased out by the Schedule 40 Steel Pipes suppliers they still exist and are used widely. DN is a dimensionless specification indirectly related to the diameter as per ISO 6708. Hence it does not directly correspond to size or schedule 40 pipes thickness in mm. Originally the NPS values were given the same inside diameter however as the schedule 40 pipes thickness evolved the inside diameter changed and NPS merely became indirectly related to inside and outside diameter. We have been producing sch 40 pipes dimensions in mm for generations and have been customizing them as per the requirements of the application as well. schedule 40 pipes weight differs as per the amount of metal used in it and the thickness of the wall. 

schedule 40 pipes thickness in mm

Supplier and exporter of SCH 40 Pipe in API 5L, ASTM A106/ A53 Grade B, A333 Gr 6, A335 P22/ P11/ P9 material in India

Nominal size [inches] Outside diameter [inches] Outside diameter [mm] Wall thickness [inches] Wall thickness [mm] Weight [lb/ft] Weight [kg/m]
1/8 inches 0.405 inches 10.3 MM 0.068 inches 1.73 MM 0.24 lb/ft 0.37 kg/m
1/4 inches 0.540 inches 13.7 MM 0.088 inches 2.24 MM 0.42 lb/ft 0.84 kg/m
1/2 inches 0.840 inches 21.3 MM 0.109 inches 2.77 MM 0.85 lb/ft 1.27 kg/m
3/4 inches 1.050 inches 26.7 MM 0.113 inches 2.87 MM 1.13 lb/ft 1.69 kg/m
1 inches 1.315 inches 33.4 MM 0.133 inches 3.38 MM 1.68 lb/ft 2.50 kg/m
1 1/4 inches 1.660 inches 42.2 MM 0.140 inches 3.56 MM 2.27 lb/ft 3.39 kg/m
1 1/2 inches 1.900 inches 48.3 MM 0.145 inches 3.68 MM 2.72 lb/ft 4.05 kg/m
2 inches 2.375 inches 60.3 MM 0.154 inches 3.91 MM 3.65 lb/ft 5.44 kg/m
2 1/2 inches 2.875 inches 73.0 MM 0.203 inches 5.16 MM 5.79 lb/ft 8.63 kg/m
3 inches 3.500 inches 88.9 MM 0.216 inches 5.49 MM 7.58 lb/ft 11.29 kg/m
3 1/2 inches 4.000 inches 101.6 MM 0.226 inches 5.74 MM 9.11 lb/ft 13.57 kg/m
4 inches 4.500 inches 114.3 MM 0.237 inches 6.02 MM 10.79 lb/ft 16.07 kg/m
5 inches 5.563 inches 141.3 MM 0.258 inches 6.55 MM 14.62 lb/ft 21.77 kg/m
6 inches 6.625 inches 168.3 MM 0.280 inches 7.11 MM 18.97 lb/ft 28.26 kg/m
8 inches 8.625 inches 219.1 MM 0.322 inches 8.18 MM 28.55 lb/ft 42.55 kg/m
10 inches 10.750 inches 273.0 MM 0.365 inches 9.27 MM 40.48 lb/ft 60.31 kg/m
12 inches 12.750 inches 323.8 MM 0.406 inches 10.31 MM 53.52 lb/ft 79.73 kg/m
14 inches 14 inches 355.6 MM 0.375 inches 11.13 MM 54.57 lb/ft 94.55 kg/m
16 inches 16 inches 406.4 MM 0.500 inches 12.70 MM 82.77 lb/ft 123.30 kg/m
18 inches 18 inches 457.0 MM 0.562 inches 14.27 MM 104.67 lb/ft 155.80 kg/m
20 inches 20 inches 508.0 MM 0.594 inches 15.09 MM 123.11 lb/ft 183.42 kg/m
24 inches 24 inches 610.0 MM 0.688 inches 17.48 MM 171.29 lb/ft 255.41 kg/m
32 inches 32 inches 813.0 MM 0.688 inches 17.48 MM 230.08 lb/ft 342.91 kg/m

schedule 40 pipes pressure rating

Maximum Allowable Pressure (psi)  (kPa)
NPS Outside Diameter Schedule
(inch) (inch)
(mm)
40
1/4 inch 0.54 inch
13.7 mm
7985
55057
3/8 inch 0.675 inch
17.1 mm
6606
45548
1/2 inch 0.84 inch
21.3 mm
6358
43838
3/4 inch 1.05 inch
26.7 mm
5273
36357
1 inch 1.315 inch
33.4 mm
4956
34172
1 1/4 inch 1.66 inch
42.2 mm
4133
28497
1 1/2 inch 1.9 inch
48.3 mm
3739
25780
2 inch 2.375 inch
60.3 mm
3177
21905
2 1/2 inch 2.875 inch
73 mm
3460
23857
3 inch 3.5 inch
88.9 mm
3024
20850
3 1/2 inch 4 inch
102 mm
2769
19092
4 inch 4.5 inch
114 mm
2581
17796
5 inch 5.563 inch
141 mm
2273
15672
6 inch 6.625 inch
168 mm
2071
14280
8 inch 8.625 inch
219 mm
1829
12611
10 inch 10.75 inch
273 mm
1664
11473
12 inch 12.75 inch
324 mm
1560
10756
14 inch 14 inch
356 mm
1533
10570
16 inch 16 inch
406 mm
1531
10556
18 inch 18 inch
457 mm
1530
10549
20 inch 20 inch
508 mm
1455
10032
22 inch 22 inch
559 mm

24 inch 24 inch
610 mm
1405
9687
30 inch 30 inch
762 mm

32 inch 32 inch
813 mm
1054
7267
34 inch 34 inch
864 mm
992
6840
36 inch 36 inch
914 mm
1021
7040
42 inch 42 inch
1067 mm
875
6033
  • 1 in (inch) = 25.4 mm

  • 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895x10-2 bar

Nominal Wall Thickness for Schedule 40 Pipe
Schedule 40 Steel Pipe Wall Thickness

sch 40 pipe dimensions

Buy Schedule 40 Seamless Pipe at factory price in Mumbai
Pipe
Size*
O.D.
(in.)
Schedule (40)
Wall Thickness (in.)**
Sch.40
Wall (in) I.D. (in)
1/8" 0.41 od 0.07 in 0.269 id
Weight
(lbs/ft.)
Steel 0.247 lbs/ft
Stainless
Aluminum
1/4" 0.54 od 0.090 in 0.364 id
Weight
(lbs/ft.)
Steel 0.429 lbs/ft
Stainless
Aluminum 0.147 lbs/ft
3/8" 0.675 od 0.091 in 0.493 id
Weight
(lbs/ft.)
Steel 0.570 lbs/ft
Stainless
Aluminum 0.196 lbs/ft
1/2" 0.840 od 0.109 in 0.622 id
Weight
(lbs/ft.)
Steel 0.850 lbs/ft
Stainless
Aluminum 0.294 lbs/ft
3/4" 1.050 od 0.113 in 0.824 id
Weight
(lbs/ft.)
Steel 1.13 lbs/ft
Stainless
Aluminum 0.391
1" 1.315 od 0.133 in 1.049 id
Weight
(lbs/ft.)
Steel 1.68 lbs/ft
Stainless
Aluminum 0.581 lbs/ft
1-1/4" 1.66 od 0.140 in 1.380 id
Weight
(lbs/ft.)
Steel 2.27 lbs/ft
Stainless
Aluminum 0.785 lbs/ft
1-1/2" 1.90 od 0.145 in 1.610 id
Weight
(lbs/ft.)
Steel 2.72 lbs/ft
Stainless
Aluminum 0.939 lbs/ft
2" 2.375 od 0.154 in 2.067 id
Weight
(lbs/ft.)
Steel 3.66 lbs/ft
Stainless
Aluminum 1.260 lbs/ft
2-1/2" 2.875 od 0.203 in 2.469 id
Weight
(lbs/ft.)
Steel 5.80 lbs/ft
Stainless
Aluminum 2.000 lbs/ft
3" 3.50 od 0.216 in 3.068 id
Weight
(lbs/ft.)
Steel 7.58 lbs/ft
Stainless
Aluminum 2.620 lbs/ft
3-1/2" 4.00 od 0.226 in 3.550 id
Weight
(lbs/ft.)
Steel 9.12 lbs/ft
Stainless
Aluminum 3.150 lbs/ft
4" 4.50 od 0.237 in 4.026 id
Weight
(lbs/ft.)
Steel 10.80 lbs/ft
Stainless
Aluminum 3.730 lbs/ft
5" 5.563 od 0.258 in 5.047 id
Weight
(lbs/ft.)
Steel 14.63 lbs/ft
Stainless
Aluminum 5.050 lbs/ft
6" 6.625 od 0.280 in 6.065 id
Weight
(lbs/ft.)
Steel 18.99 lbs/ft
Stainless
Aluminum 6.560 lbs/ft
8" 8.625 od 0.322 in 7.981 id
Weight
(lbs/ft.)
Steel 28.58 lbs/ft
Stainless
Aluminum 9.88 lbs/ft
*Nominal sizes apply - Pipe Size is the generic Industry Size Standard for reference only

**Tolerances may vary slightly from each manufacturer





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