Schedule 40 Steel Pipe and ANSI Sch 40 weight/ dimensions

ANSI/ ASME B36.10 Schedule 40 Carbon Steel Pipe chart, dimensions, weight, Supplier and exporter of SCH 40 Pipe in API 5L, Schedule 40 Pipe Wall Thickness, Alloy & Carbon Steel SCH 40 Pipe Size Chart as per ASME B36.10, ASTM A106/A53 Grade B, A333 Gr 6, A335 P22/ P11/ P9 material in India.

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Steel pipes are available in various grades and are categorized into schedules. Each schedule defines the pipe's thickness, with higher numbers indicating thicker pipes. Schedule 40 Steel Pipe is a versatile option known for its proven performance. These pipes can be coated with zinc through in-line galvanization or hot-dip galvanization, with the latter allowing the zinc to bond more effectively with the pipe.

Schedule 40 pipe pressure ratings are generally standard and belong to a high strength grade. The pipe's outer diameter and wall thickness can be determined using NPS (Nominal Pipe Size) and schedule pipes. For example, an NPS 14 schedule 40 pipe will have an outside diameter of 14 inches and a wall thickness of 0.437 inches. The schedule number helps define the inside and outside diameter of the pipe.

The dimensions of schedule 40 pipes are crucial, especially for applications with low water pressure, due to their thinner walls. It's important to ensure that the sch 40 pipes dimensions match the requirements of your application, as any variation in pressure can impact performance.

Schedule 40 steel pipes weight varies based on the pipe's size. Typically, the weight per foot of sch 40 pipes is around 1.68 lbs. Originally, schedule 40 steel pipes dimensions were classified into three sections: standard weight (STD), extra strong (XS), and double extra strong (XXS), based on pipe size. Although these classifications were supposed to be phased out, they are still widely used.

DN (Diameter Nominal) is a dimensionless specification related indirectly to the diameter as per ISO 6708, not directly reflecting the size or thickness in millimeters. Initially, NPS values matched the inside diameter, but as the schedule 40 pipes thickness evolved, the inside diameter changed, making NPS indirectly related to the diameters.

At our company, we have been producing sch 40 pipes dimensions in mm for generations and customizing them as needed. The schedule 40 pipes weight depends on the amount of metal and the wall thickness used in the pipe.

By understanding these details, you can make informed decisions about which schedule 40 steel pipes best meet your application's requirements.

What is Schedule 40 Pipe?

Schedule 40 Pipe (Sch40) refers to a standard thickness of 4 mm, indicating it can handle 40 kg of pressure. This versatile pipe is commonly used for water and gas lines, but it can also be galvanized and is suitable for decorative and structural support applications. Its ability to be used in many different ways makes it a popular choice. Schedule 40 Steel Pipe adheres to ANSI B36.10, which includes ten wall thickness levels: Sch10, Sch20, Sch30, Sch40, Sch60, Sch80, Sch100, Sch120, Sch140, and Sch160. Manufacturers and suppliers offer Schedule 40 Pipe in various materials, including Stainless Steel, ASTM A106 Grade B, A53 Grb, A333 Grade 6, Aluminum, API 5L Gr. B Carbon Steel, and Galvanized Iron (Gi) material, making it a reliable option for a wide range of applications.

Schedule 40 Pipe size chart, dimensions, wall thickness and weight

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

Chemical Composition of Schedule 40 Steel Pipe

Schedule 40 Steel Pipe refers to the nominal wall thickness, not the grade. Therefore, the chemical composition of a schedule 40 pipe is not necessarily uniform across different types. However, schedule 40 pipes are typically made from low-carbon steel, usually grade A53 steel. The chemical composition can vary, especially between different types and welds.
As a point of reference, the chemical composition of type S seamless weld A53 steel is generally:

Carbon: 0.25% (max)
Manganese: 0.95% (max)
Phosphorous: 0.05% (max)
Sulfur: 0.045% (max)
Copper: 0.4% (max)
Nickel: 0.4% (max)
Chromium: 0.4% (max)
Molybdenum: 0.15% (max)
Vanadium: 0.08% (max)

This composition ensures the pipe has suitable mechanical properties for a variety of applications, making Schedule 40 Steel Pipe a versatile and widely used choice in various industries.

Grades of Schedule 40 Steel Pipe

Schedule 40 steel pipe is available in various grades, each with unique properties and characteristics. Here are the most common grades:

1. ASTM A53 Grade B:

Applications: Plumbing, construction, and industrial uses.
Yield Strength: 35,000 psi (minimum)
Tensile Strength: 60,000 psi (minimum)

2. ASTM A106 Grade B:

Applications: High-temperature applications, such as steam and gas lines, refineries, and plants.
Yield Strength: 35,000 psi (minimum)
Tensile Strength: 60,000 psi (minimum)

3. API 5L Grade B:

Applications: Oil and gas industry.
Yield Strength: 35,000 psi (minimum)
Tensile Strength: 60,000 psi (minimum)

4. ASTM A333 Grade 6:

Applications: Low-temperature service, such as liquefied natural gas (LNG) plants.
Yield Strength: 35,000 psi (minimum)
Tensile Strength: 60,000 psi (minimum)

Other grades of Schedule 40 steel pipe may be available based on specific applications and requirements. It is crucial to consult the manufacturer's specifications to determine the appropriate grade for a given application.

Schedule 40 Carbon Steel Pipe Pressure Rating

*Maximum Allowable Pressure (psi)* (kPa)**
NPS	Outside Diameter (OD)	Schedule
(in)	(in) (mm)	40
1/4	0.54 13.7	7985 55057
3/8	0.675 17.1	6606 45548
1/2	0.84 21.3	6358 43838
3/4	1.05 26.7	5273 36357
1	1.315 33.4	4956 34172
1 1/4	1.66 42.2	4133 28497
1 1/2	1.9 48.3	3739 25780
2	2.375 60.3	3177 21905
2 1/2	2.875 73	3460 23857
3	3.5 88.9	3024 20850
3 1/2	4 102	2769 19092
4	4.5 114	2581 17796
5	5.563 141	2273 15672
6	6.625 168	2071 14280
8	8.625 219	1829 12611
10	10.75 273	1664 11473
12	12.75 324	1560 10756
14	14 356	1533 10570
16	16 406	1531 10556
18	18 457	1530 10549
20	20 508	1455 10032
22	22 559
24	24 610	1405 9687
30	30 762
32	32 813	1054 7267
34	34 864	992 6840
36	36 914	1021 7040
42	42 1067	875 6033

Schedule 40 Pipe Dimensions and Wall Thickness

Pipe Sizes*	O.D. (in.)	Schedule (40) Pipe 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

Applications of Sch 40 Steel Pipe

Schedule 40 steel pipe is a versatile and durable product used across various industries due to its robust nature. Here are some common applications:

Plumbing and HVAC: Widely used in residential, commercial, and industrial buildings for plumbing and heating, ventilation, and air conditioning systems.
Water Treatment: Essential in water treatment plants and distribution systems for conveying clean water and wastewater.
Oil and Gas: Commonly used for transporting crude oil, natural gas, and other petroleum products in the oil and gas industry.
Chemical Processing: Utilized in chemical processing plants to convey acids, alkalis, and other corrosive chemicals.
Power Generation: Used in power plants to convey steam and other fluids in high-temperature and high-pressure applications.
Construction: Employed in structural applications, such as building supports, scaffolding, and fences.
Agriculture: Used in irrigation systems for conveying water to crops and supporting agricultural structures like greenhouses.
Mining: Applied in mining operations for conveying slurries and other materials in corrosive environments.

FAQ

What is the schedule 40 steel pipe?

Schedule 40 steel pipe is a standard thickness used in construction, offering a balance between cost, strength, and ease of installation.

What is the thickness of a Schedule 40 pipe?

The thickness of Schedule 40 pipe varies depending on the diameter, but for a standard size example, a 1-inch Schedule 40 steel pipe has a wall thickness of 0.133 inches (3.38 mm).

What is the strength of Schedule 40 steel pipe?

The tensile strength of Schedule 40 steel pipe is a minimum of 48,000 psi (330 MPa), while the yield strength is a minimum of 30,000 psi (205 MPa).