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Schedule 40 Stainless Steel Pipe chart

Stainless Steel SCH40s Pipe, Schedule 40 SS 304 pipe, Check Schedule 40 Stainless Steel Pipe Strength

Steel pipes are fabricated in different schedules within set industrial standards and have different thicknesses of the wall. Where the higher the schedule number, the higher will be the thickness of the wall. The schedule pipes are designed for specific applications and are personalized accordingly. Just like other grades, the schedule 40 pipes are also fabricated for medium to low pressure applications due to the thickness of the wall, and these pipes are also known as moderate schedule pipes. Even with moderate wall thickness, these pipes show great character in various environmental conditions, provide higher resistance to various corrosions, prevent oxidation, and protect the metal from rapture breaking.

Schedule 40 Stainless Steel Pipe

Schedule 40 Stainless Steel Pipe

ss 304 schedules 40 pipes

ss 304 schedules 40 pipes

Schedule 40S Seamless Pipe

Schedule 40S Seamless Pipe


The schedule 40 pipes are made from mild steel or low carbon and have a zinc coating, done in two different ways: in line galvanization and hot dip galvanization. Where the hot dip galvanizing method is most commonly used to prevent the metal from rusting. Also in some cases stainless steel is employed to get higher resistance from corrosion.

Though it has high anti-corrosion properties, this grade of pipes have comparatively thin wall thickness. Hence, choosing the scheduled pipes as per customers' requirements for their specified pressure applications is recommended. A change in pressure can affect these pipes extensively. Here the pipes with a diameter of 1/8” has a wall thickness of 1.727mm, and where the diameter is 24” the wall thickness goes up to 9.525mm. Each variant has different pressure bearing capacity ranging from low to moderate.

Table of Contents

Schedule 40 Stainless Steel Pipes Dimension

Nominal size [inches] Outside diameter [inches] Outside diameter [mm] Wall thickness [inches] Wall thickness [mm] Weight [lb/ft] Weight [kg/m]
1/2 Inches 0.840 Inches 21.3 MM 0.065 Inches 1.65 MM 0.54 lb/ft 0.80 kg/m
3/4 Inches 1.050 Inches 26.7 MM 0.065 Inches 1.65 MM 0.69 lb/ft 1.03 kg/m
1 Inches 1.315 Inches 33.4 MM 0.065 Inches 1.65 MM 0.87 lb/ft 1.30 kg/m
1 1/4 Inches 1.660 Inches 42.2 MM 0.065 Inches 1.65 MM 1.12 lb/ft 1.66 kg/m
1 1/2 Inches 1.900 Inches 48.3 MM 0.065 Inches 1.65 MM 1.28 lb/ft 1.91 kg/m
2 Inches 2.375 Inches 60.3 MM 0.065 Inches 1.65 MM 1.61 lb/ft 2.40 kg/m
2 1/2 Inches 2.875 Inches 73.0 MM 0.083 Inches 2.11 MM 2.49 lb/ft 3.71 kg/m
3 Inches 3.500 Inches 88.9 MM 0.083 Inches 2.11 MM 3.05 lb/ft 4.54 kg/m
3 1/2 Inches 4.000 Inches 101.6 MM 0.083 Inches 2.11 MM 3.50 lb/ft 5.21 kg/m
4 Inches 4.500 Inches 114.3 MM 0.083 Inches 2.11 MM 3.95 lb/ft 5.88 kg/m
5 Inches 5.563 Inches 141.3 MM 0.109 Inches 2.77 MM 6.40 lb/ft 9.52 kg/m
6 Inches 6.625 Inches 168.3 MM 0.109 Inches 2.77 MM 7.65 lb/ft 11.38 kg/m
8 Inches 8.625 Inches 219.1 MM 0.109 Inches 2.77 MM 9.99 lb/ft 14.87 kg/m
10 Inches 10.750 Inches 273.1 MM 0.134 Inches 3.4 MM 15.29 lb/ft 22.76 kg/m
12 Inches 12.750 Inches 323.9 MM 0.156 Inches 3.96 MM 21.13 lb/ft 31.44 kg/m
14 Inches 14.000 Inches 355.6 MM 0.156 Inches 3.96 MM 23.22 lb/ft 34.56 kg/m
16 Inches 16.000 Inches 406.4 MM 0.165 Inches 4.19 MM 28.11 lb/ft 41.83 kg/m
18 Inches 18.000 Inches 457.0 MM 0.165 Inches 4.19 MM 31.64 lb/ft 47.09 kg/m
20 Inches 20.000 Inches 508.0 MM 0.188 Inches 4.78 MM 40.12 lb/ft 59.70 kg/m
22 Inches 22.000 Inches 559.0 MM 0.188 Inches 4.78 MM 44.18 lb/ft 65.75 kg/m
24 Inches 24.000 Inches 610.0 MM 0.218 Inches 5.54 MM 55.85 lb/ft 83.11 kg/m
30 Inches 30.000 Inches 762.0 MM 0.250 Inches 6.35 MM 80.02 lb/ft 119.09 kg/m

At N-pipes, we have experts with years of experience to guide our customers to choose a suitable product for their applications and requirements. We have satisfied clients across India and various countries using our Schedule 40 pipes for various applications like water lines, pulp, paper industries, construction, and more. We provide all necessary certificates only after testing all our products to ensure profound quality at inexpensive rates.

We provide the best competitive prices to our clients backed by quality service.


SCH 40 SS Pipe Wall Thickness

Nominal size [inches] Outside diameter [inches] Outside diameter [mm] Wall thickness [inches] Wall thickness [mm] Weight [lb/ft] Weight [kg/m]
1/2 0.840 21.3 0.083 2.11 0.68 1.00
3/4 1.050 26.7 0.083 2.11 0.87 1.29
1 1.315 33.4 0.109 2.77 1.41 2.11
1 1/4 1.660 42.2 0.109 2.77 1.82 2.71
1 1/2 1.900 48.3 0.109 2.77 2.1 3.13
2 2.375 60.3 0.109 2.77 2.66 3.96
2 1/2 2.875 73.0 0.120 3.05 3.56 5.29
3 3.500 88.9 0.120 3.05 4.37 6.50
3 1/2 4.000 101.6 0.120 3.05 5.01 7.46
4 4.500 114.3 0.120 3.05 5.66 8.42
5 5.563 141.3 0.134 3.40 7.82 11.64
6 6.625 168.3 0.134 3.40 9.35 13.91
8 8.625 219.1 0.148 3.76 13.50 20.10
10 10.750 273.1 0.165 4.19 18.79 27.96
12 12.750 323.9 0.180 4.57 24.34 36.22
14 14.000 355.6 0.188 4.78 27.97 41.62
16 16.000 406.4 0.188 4.78 32.02 47.65
18 18.000 457.0 0.188 4.78 36.05 53.65
20 20.000 508.0 0.218 5.54 46.42 69.09
22 22.000 559.0 0.218 5.54 51.14 76.10
24 24.000 610.0 0.250 6.35 63.93 95.13
30 30.000 762.0 0.312 7.92 99.60 148.22

Pressure Rating Of Seamless schedule 40S pipe

Schedule 40 Stainless Steel Pipe Pressure Rating

Schedule 40 Stainless Steel Pipe Pressure Rating

Schedule 40 Stainless Steel Pipe Pressure Rating


Ordering Information

The purchase order shall include the quantity, PSL level, type or Grade, reference to API5L, outside diameter, wall thickness, length and any applicable annexes or additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coatings or end finish.


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