جدول Pipe Schedule: أبعاد أنابيب الصلب وسماكة الجدار

Pipe schedule is an important specification used to describe the wall thickness of steel pipes. For the same nominal pipe size, the outside diameter usually remains the same, while the wall thickness changes according to the schedule number, such as SCH 40, SCH 80 or SCH 160.

This pipe schedule chart helps engineers, buyers and project teams compare steel pipe outside diameter, wall thickness and common schedule dimensions for industrial pipeline projects.

Pipe Schedule Chart
Normal Diameter		OD(MM)	WALL THICKMESS(MM)
			ANSI B36.10M						ANSI B36.19M
A(MM)	B(INCH)	ASME	SCH5/5S	SCH10S	SCH10	SCH20	SCH30	STD	SCH40	SCH40S	SCH60	XS	SCH80	SCH80S	SCH100	SCH120	SCH140	SCH160	XXS
6	1/8"	10.29		1.24	1.24		1.45	1.73	1.73	1.73		2.41	2.41	2.41
8	1/4"	13.72		1.65	1.65		1.85	2.24	2.24	2.24		3.02	3.02	3.02
10	3/8"	17.14		1.65	1.65		1.85	2.31	2.31	2.31		3.2	3.2	3.2
15	1/2"	21.34	1.65	2.11	2.11		2.41	2.77	2.77	2.77		3.73	3.73	3.73				4.78	7.47
20	3/4"	26.67	1.65	2.11	2.11		2.41	2.87	2.87	2.87		3.91	3.91	3.91				5.56	7.82
25	1"	33.40	1.65	2.77	2.77		2.9	3.38	3.38	3.38		4.55	4.55	4.55				6.35	9.09
32	1.1/4"	42.16	1.65	2.77	2.77		2.97	3.56	3.56	3.56		4.85	4.85	4.85				6.35	9.7
40	1.1/2"	48.26	1.65	2.77	2.77		3.18	3.68	3.68	3.68		5.08	5.08	5.08				7.14	10.15
50	2"	60.32	1.65	2.77	2.77		3.18	3.91	3.91	3.91		5.54	5.54	5.54				8.74	11.07
65	2.1/2"	73.02	2.11	3.05	3.05		4.78	5.16	5.16	5.16		7.01	7.01	7.01				9.53	14.02
80	3"	88.90	2.11	3.05	3.05		4.78	5.49	5.49	5.49		7.62	7.62	7.62				11.13	15.25
90	3.1/2"	101.60	2.11	3.05	3.05		4.78	5.74	5.74	5.74		8.08	8.08	8.08
100	4"	114.30	2.11	3.05	3.05		4.78	6.02	6.02	6.02		8.56	8.56	8.56		11.13		13.49	17.12
125	5"	141.30	2.77	3.40	3.40			6.55	6.55	6.55		9.53	9.53	9.53		12.7		15.88	19.05
150	6"	168.28	2.77	3.40	3.40			7.11	7.11	7.11		10.97	10.97	10.97		14.27		18.26	21.95
200	8"	219.08	2.77	3.76	3.76	6.35	7.04	8.18	8.18	8.18	10.31	12.7	12.7	12.7	15.09	18.26	20.62	23.01	22.23
250	10"	273.05	3.40	4.19	4.19	6.35	7.8	9.27	9.27	9.27	12.7	12.7	15.09	12.7	18.26	21.44	25.4	28.58	25.4
300	12"	323.85	3.96	4.57	4.57	6.35	8.38	9.53	10.31	9.53	14.27	12.7	17.48	12.7	21.44	25.4	28.58	33.32	25.4
350	14"	355.60	3.96	4.78	6.35	7.92	9.53	9.53	11.13	9.53	15.09	12.7	19.05	12.7	23.83	27.79	31.75	35.71
400	16"	406.40	4.19	4.78	6.35	7.92	9.53	9.53	12.7	9.53	16.66	12.7	21.44	12.7	26.19	30.96	36.53	40.49
450	18"	457.20	4.19	4.78	6.35	7.92	11.13	9.53	14.27	9.53	19.05	12.7	23.83	12.7	29.36	34.93	39.67	45.24
500	20"	508.00	4.78	5.54	6.35	9.53	12.7	9.53	15.09	9.53	20.62	12.7	26.19	12.7	32.54	38.1	44.45	50.01
550	22"	558.80	4.78	5.54	6.35	9.53	12.7	9.53			22.23	12.7	28.58		34.93	41.28	47.63	53.98
600	24"	609.60	5.54	6.35	6.35	9.53	14.27	9.53	17.48	9.53	24.61	12.7	30.96	12.7	38.89	46.02	52.37	59.54
650	26"	660.40			7.92	12.7		9.53				12.7
700	28"	711.20			7.92	12.7	15.88	9.53				12.7
750	30"	762.00	6.35		7.92	12.7	15.88	9.53				12.7
800	32"	812.00			7.92	12.7	15.88	9.53	17.48			12.7
850	34"	863.60			7.92	12.7	15.88	9.53	17.48			12.7
900	36"	914.40			7.92	12.7	15.88	9.53	19.05			12.7
950	38"	965.20						9.53				12.7
1000	40"	1016.00						9.53				12.7
1050	42"	1066.80						9.53				12.7
1100	44"	1117.60						9.53				12.7
1150	46"	1168.40						9.53				12.7
1200	48"	1229.20						9.53				12.7
1300	52"	1320.80						9.53				12.7
1350	54"	1371.60						9.53				12.7
1400	56"	1422.40						9.53				12.7
1500	60"	1524.00						9.53				12.7
1600	64"	1625.00						9.53				12.7
1700	68"	1727.20						9.53				12.7
1800	72"	1828.80						9.53				12.7
1900	76"	1930.40						9.53				12.7
2000	80"	2032.00						9.53				12.7

What Is Pipe Schedule?

Pipe schedule, often shown as SCH, is a standardized way to indicate pipe wall thickness. A higher schedule number usually means a thicker wall and higher pressure capacity. For example, SCH 80 pipe has a thicker wall than SCH 40 pipe for the same nominal pipe size.

Pipe schedule is widely used when selecting seamless steel pipe for pressure piping, boiler systems, oil and gas pipelines and industrial applications.

Pipe Schedule Chart

The pipe schedule chart usually includes nominal pipe size, outside diameter, wall thickness and different schedule values such as SCH 10, SCH 40, SCH 80, SCH 160, STD, XS and XXS. These values help users choose the correct pipe size for design, purchase and installation.

For water, gas and structural applications, ERW steel pipe is often selected according to the required outside diameter, wall thickness and pipe schedule.

Common Pipe Schedules

SCH 40 Pipe:
SCH 40 is one of the most commonly used pipe schedules. It is widely used for general fluid transmission, water pipelines, structural applications and low to medium pressure systems.

SCH 80 Pipe:
SCH 80 pipe has a thicker wall than SCH 40 pipe and is often used where higher pressure resistance is required.

SCH 160 Pipe:
SCH 160 pipe is used for high pressure service and demanding industrial applications.

STD, XS and XXS:
STD, XS and XXS are traditional wall thickness designations. They are still commonly used in steel pipe specifications and project documents.

How to Choose the Right Pipe Schedule

The right pipe schedule depends on pressure, temperature, fluid medium, pipe material, project standard and application environment. Engineers usually select the pipe schedule according to design codes, working pressure and safety requirements.

In oil and gas transmission projects, API 5L line pipe specifications usually define the required pipe size, grade and wall thickness for pipeline service.

Related Steel Pipe Products

Forever Steel supplies steel pipes in different standards, grades and wall thicknesses, including seamless steel pipe, welded steel pipe, ERW steel pipe and API 5L line pipe for oil, gas, water and industrial pipeline projects.

If you need steel pipe according to SCH 40, SCH 80, SCH 160, STD, XS or XXS dimensions, contact Forever Steel for available sizes, materials, standards and project support.