DIN 2440 standard specification

DIN 2440 Threaded Steel Tubes come under the AISI, DIN, EN, GB, IS, JIS and ASTM standards with outer diameters ranging from 4mm to 219mm and the wall thicknesses ranging from 0.5mm to 20mm. Steel India Company is a leading manufacturer and supplier of the DIN 2440 St33 Steel Pipe in different dimensions and types. There are different swg scales from 10 to 20 in this range of pipes with varying schedules as well. The schedules are from sch5 through sch160 and XXS. The Din 2440 Threaded Steel Tubescome in welded, seamless, ERW, EFW and fabricated pipe types.

There are different forms to the pipes such as polished, annealed and pickled, bright and annealed types. The Carbon Steel DIN 2440 St 33-2 Seamless Tubes can come with different pipe ends such as plain end, beveled end, threaded pipe and tube types. The applications are in oil, gas, fluid transfer lines and in heat exchanger and boiler components. The DIN 2440 Grade St 33-2 Round Pipes are the most used ones where the other forms such as square pipes are available. The chemical composition of the pipes contains carbon, silicon, manganese, chromium, nickel and molybdenum. The DIN 2440 Steel Pipes have 185MPa minimum yield strength and 310MPa minimum tensile strength. Please feel free to contact us for a full price list and other information on the DIN 2440 ST33.2 Carbon Steel Tube products.

Carbon Steel St 33.2 Tube Dimension Chart

Nominal Width	Connecting nominal width of the fittings according to DIN2950 and DIN 2980	Whitworth pipe threads according to DIN2999 Part1	Tube				Screw thread					Corresponding
			Outside diameterd1	Wall thickness	Weight		Theoretical screw thread diameter d2	Threads per 25.4mm	Usable screw thread length J min at a max.	Distance of screw thread dlameter d2 from tube end		Outside	Length
					Plain-end tube kg/m	socketed tube kg/m				a max.	a min.	min.	min.
6	1/8	R 1/8	10.2	2	0.407	0.41	9.728	28	7.4	4.9	3.1	14	17
8	1/4	R 1/4	13.5	2.35	0.65	0.654	13.157	19	11	7.3	4.7	15.4	25
10	3/8	R 3/8	17.2	2.65	0.852	0.858	16.662	19	11.4	7.7	5.1	21.3	26
15	1/2	R 1/2	21.3	2.65	1.22	1.23	20.955	14	15	10	6.4	26.4	34
20	3/4	R 3/5	26.9	2.65	1.58	1.59	26.441	14	16.3	11.3	7.7	31.8	36
25	1	R 1	33.7	3.25	2.44	2.46	33.249	11	19.1	12.7	8.1	39.5	43
32	1.25	R 1 1/4	42.4	3.25	3.14	3.17	41.91	11	21.4	15	10.4	48.3	48
40	1.5	R 1 1/2	48.3	3.25	3.61	3.64	47.803	11	21.4	15	10.4	54.5	48
50	2	R 2	60.3	3.65	5.1	5.17	59.614	11	25.7	18.2	13.6	66.3	56
65	2.5	R 2 1/2	76.1	3.65	6.51	6.63	75.184	11	30.2	21	14	82	65
80	3	R 3	88.9	4.05	8.47	8.64	87.884	11	33.3	241	17.1	95	71
100	4	R4	114.3	4.5	12.1	12.4	113.03	11	39.3	28.9	21.9	122	83
125	5	R 5	139.7	4.85	16.2	16.2	138.43	11	43.6	32.1	25.1	147	92
150	6	R 6	165.1	4.85	19.2	19.8	163.83	11	43.6	32.1	25.1	174	92

Din 2440 St33.2 Seamless Carbon Steel Tube Sizes

DN	Zoll	d	s	kg/m
				schwarz	verzinkt
8	1/4	13.5	2.35	0.65	0.68
10	3/8	17.2	2.35	0.85	0.89
15	1/2	21.3	2.65	1.22	1.27
20	3/4	26.9	2.65	1.58	1.65
25	1	33.7	3.25	2.44	2.55
32	1.25	42.4	3.25	3.14	3.28
40	1.5	48.3	3.25	3.61	3.77
50	2	60.3	3.65	5.1	5.33
65	21/2	76.1	3.65	6.51	6.8
80	3	88.9	4.05	8.47	8.85
100	4	114.3	4.5	12.1	12.64

DIN 2440 Threaded Steel Tubes Wall Thickness

ND		Outside Diameter	OD Tolerances	Wall Thickness, mm (±12,5%)
inch	mm	mm	mm	DIN 2440	DIN 2441
1/8	6	10,2	+ 0,4; - 0,4	2,00	2,65
1/4	8	13,5	+ 0,5; - 0,3	2,35	2,90
3/8	10	17,2	+ 0,5; - 0,3	2,35	2,90
1/2	15	21,3	+ 0,5; - 0,3	2,65	3,25
3/4	20	26,9	+ 0,4; - 0,4	2,65	3,25
1	25	33,7	+ 0,5; - 0,4	3,25	4,05
1.25	32	42,4	+ 0,5; - 0,4	3,25	4,05
1.5	40	48,3	+ 0,5; - 0,4	3,25	4,05
2	50	60,3	+ 0,5; - 0,4	3,65	4,05
2.5	65	76,1	+ 0,5; - 0,8	3,65	4,50
3	80	88,9	+ 0,6; - 0,9	4,05	4,85
4	100	114,3	+ 0,7; - 1,2	4,50	5,40
5	125	139,7	+ 1,1; - 1,2		5,40