Seamless steel pipe schedule 40(sch40 wall thickness comparison table)

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1. The wall thickness of sch40 is 3.91mm.
2. sch represents the inch wall thickness series, and the series with s is dedicated to stainless steel.
3. The serial number of the pipe wall is as follows: The pipe table number in ANSI B36.10 and JIS standards is; Schl0, 20, 30, 40, 60, 80, 100, 120, 140, 160.
4. The table numbers of stainless steel pipes and tubes in ANSI B36.19 are: 5S, 10S, 40S, 80S.
5. Extended data: The pipe table number (Sch.) is the ratio of the design pressure and the allowable stress of the material at the design temperature multiplied by 1000, and the value after rounding.
6. Sch .=P/[ó]t×1000 (1-2-1), where P represents the design pressure MPa; [ó]t—the allowable stress MPa of the material at the design temperature.
7. The wall thickness of American standard and domestic standard is quite different. Generally, two pressure grades of American standard CL.150 and CL.300 are used.
8. When the temperature is not high, the two wall thickness pipes, SCH10S and SCH40, are generally used, and SCH80 and SCH40S are used for DN less than 50.
9. Whether at home or abroad, Sch.XX is used to indicate the wall thickness grade of the pipe, and the national standard GB/T81631 HG20553 is also included. According to the difference of the outer diameter of the pipe or the size of the pipe, the wall thickness of different sizes indicated by the same pipe table number is different. .
10. Reference source: Baidu Encyclopedia – National Standard Steel Pipe.

Pipes schedule 40 chart gives dimensions of steel pipes schedule 40. The chart includes sizes in inches and in millimeters.

Nominal size [inches]	Outside diameter [inches]	Outside diameter [mm]	Wall thickness [inches]	Wall thickness [mm]	Weight [lb/ft]	Weight [kg/m]
44204	0,405	10,3	0,068	1,73	0,24	0,37
44200	0,540	13,7	0,088	2,24	0,42	0,84
44198	0,840	21,3	0,109	2,77	0,85	1,27
44259	1050	26,7	0,113	2,87	1,13	1,69
1	1315	33,4	0,133	3,38	1,68	2,50
1.25	1660	42,2	0,140	3,56	2,27	3,39
1.5	1900	48,3	0,145	3,68	2,72	4,05
2	2375	60,3	0,154	3,91	3,65	5,44
2.5	2875	73,0	0,203	5,16	5,79	8,63
3	3500	88,9	0,216	5,49	7,58	11,29
3.5	4000	101,6	0,226	5,74	9,11	13,57
4	4500	114,3	0,237	6,02	10,79	16,07
5	5563	141,3	0,258	6,55	14,62	21,77
6	6625	168,3	0,280	7,11	18,97	28,26
8	8625	219,1	0,322	8,18	28,55	42,55
10	10750	273,0	0,365	9,27	40,48	60,31
12	12750	323,8	0,406	10,31	53,52	79,73
14	14	355,6	0,375	11,13	54,57	94,55
16	16	406,4	0,500	12,70	82,77	123,30
18	18	457,0	0,562	14,27	104,67	155,80
20	20	508,0	0,594	15,09	123,11	183,42
24	24	610,0	0,688	17,48	171,29	255,41
32	32	813,0	0,688	17,48	230,08	342,91