Inch pipe diameter

Pipe diameter inch, What pipe diameters are there? What DN sizes are there? Pipe diameter table, Pipe diameter DN table, — Pipe diameter inch

Historically, the dimensions for inch tubes referred to the inside diameter. A 1 inch pipe had an inner diameter of 25.4mm. In those days, the quality of steel was not as good as it is today, and the outside diameter of a 1 inch pipe was about 33mm. Fittings and tools were also made to this dimension.

By improving the materials used, the wall thickness of the pipes could be reduced more and more. As the molded parts and fittings and tools were manufactured for the outer diameter of approx. 33mm, the inner diameter of the pipe became larger. Therefore, the inch pipes no longer correspond to any of today's standard inch dimensions and are now defined metrically. Today, if you have an inch pipe with an outer diameter of about 33mm, it is called a 1 inch pipe. The inner diameter is not defined in any standard and can vary.

As you can see, it is not easy to find the right one for inch pipes.

The inch pipe table below should help you to find the right inch pipe.

Example: 1 inch pipe outer diameter

1 inch pipe outer diameter = min. 32.89mm - max. 33.25mm

In the table below you can find all common inch pipe outside diameters.

werbung links1

Inch pipe outside diameter according to DIN EN ISO 228-1 and DIN 2999

Inch pipe outer diameter, Whitworth pipe thread for threaded pipe and fittings, Cylindrical female thread and tapered male thread, thread dimensions. In the table you find hte minimum and maximum Inch pipe outer diameter.

Inch thread	Inch pipe outer diameter minimum	Inch pipe outer diameter maximum
1/16 Inch pipe	7,51 mm	7,72 mm
1/8 Inch pipe	9,51 mm	9,73 mm
1/4 Inch pipe	12,91 mm	13,12 mm
3/8 Inch pipe	16,41 mm	16,66 mm
1/2 Inch pipe	20,67 mm	20,96 mm
5/8 Inch pipe	22,63 mm	22,91 mm
3/4 Inch pipe	26,16 mm	26,44 mm
7/8 Inch pipe	29,92 mm	30,20 mm
1 Inch pipe	32,89 mm	33,25 mm
1 1/8 Inch pipe	37,54 mm	37,90 mm
1 1/4 Inch pipe	41,55 mm	41,91 mm
1 1/2 Inch pipe	47,44 mm	47,80 mm
1 3/4 Inch pipe	53,39 mm	53,75 mm
2 Inch pipe	59,25 mm	59,61 mm
2 1/4 Inch pipe	65,27 mm	65,71 mm
2 1/2 Inch pipe	74,75 mm	75,18 mm
2 3/4 Inch pipe	81,10 mm	81,53 mm
3 Inch pipe	87,45 mm	87,88 mm
3 1/2 Inch pipe	99,99 mm	100,33 mm
4 Inch pipe	112,60 mm	113,03 mm
4 1/2 Inch pipe	125,30 mm	125,73 mm
5 Inch pipe	138,00 mm	138,43 mm
5 1/2 Inch pipe	150,70 mm	151,13 mm
6 Inch pipe	163,40 mm	163,83 mm

* All data without guarantee.

werbung links2

Inch pipe outside diameter according to DIN EN ISO 6708 and DIN 10255

Inch Pipe Outer Diameter for Piping Components - Definition and Selection of DN (Nominal Diameter)

Inch thread	DN Diameter Nominal (Nominal pipe diameter)	Inch pipe diameter
1/4 Inch pipe	8 mm	13,5 mm
3/8 Inch pipe	10 mm	17,2 mm
1/2 Inch pipe	15 mm	21,3 mm
3/4 Inch pipe	20 mm	26,9 mm
1 Inch pipe	25 mm	33,7 mm
1 1/4 Inch pipe	32 mm	42,4 mm
1 1/2 Inch pipe	40 mm	48,3 mm
2 Inch pipe	50 mm	60,3 mm
2 1/2 Inch pipe	65 mm	76,1 mm
3 Inch pipe	80 mm	88,9 mm
4 Inch pipe	100 mm	114,3 mm
5 Inch pipe	125 mm	139,7 mm
6 Inch pipe	150 mm	168,3 mm
8 Inch pipe	200 mm	219,1 mm
10 Inch pipe	250 mm	273,0 mm

* All data without guarantee.

Inch pipe inner diameter and outer diameter - table

Pipe diameter for plastic pressure pipes (PVC) according to DIN EN ISO 1452-2 and DIN 8062

Nominal width DN	Inch pipe Innendurchmesser	Zoll Rohr Außendurchmesser	Zoll Rohr Wall thickness
Pipes according to DIN 8062, series 4 (nominal pressure PN 10 at 20°C water temperature)
DN 50	57,0 mm	63 mm	3,0 mm
DN 65	67,8 mm	75 mm	3,6 mm
DN 80	81,4 mm	90 mm	4,3 mm
DN 100	99,4 mm	110 mm	5,3 mm
DN 125	126,6 mm	140 mm	6,7 mm
DN 150	144,6 mm	160 mm	7,7 mm
DN 200	203,4 mm	225 mm	10,8 mm
Pipes according to DIN 8062, series 5 (nominal pressure PN 16 at 20°C water temperature)
DN 80	76,6 mm	90 mm	6,7 mm
DN 100	93,6 mm	110 mm	8,2 mm
DN 125	119,2 mm	140 mm	10,4 mm
DN 150	136,2 mm	160 mm	11,9 mm
DN 200	191,6 mm	225 mm	16,7 mm

* All data without guarantee.

werbung links2