Welded steel tubes - EN 10217-2 Archives

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EN 10217-2 is a European standard for welded steel tubes for pressure purposes. The standard specifies the technical delivery conditions for electric welded tubes made of non-alloy and alloy steel with specified elevated temperature properties.

The tubes covered by EN 10217-2 are intended for use in pressure systems at room temperature or at elevated temperatures. They can be used for conveying fluids, gases, and steam, as well as for structural purposes.

The standard covers tubes with diameters ranging from 17.2 mm to 1,420 mm and with wall thicknesses up to 40 mm. The tubes can be supplied in either circular, square, or rectangular shapes.

EN 10217-2 distinguishes between two classes of tubes: Class A and Class B. Class A tubes have a welded seam that is 100% radiographically tested, while Class B tubes have a welded seam that is either 100% radiographically tested or subjected to an ultrasonic test in accordance with the standard.

The standard also specifies the types of steel that can be used for the manufacture of the tubes, as well as the heat treatment processes that can be applied. The types of steel include P235TR1, P235TR2, P265TR1, P265TR2, and P355N. The heat treatment processes include normalized, normalized and tempered, and quenched and tempered.

EN 10217-2 also specifies the tolerances on dimensions and shape, as well as the inspection and testing procedures that must be carried out on the tubes before they can be delivered. The inspection and testing procedures include visual inspection, dimensional inspection, flattening test, tensile test, impact test, and non-destructive testing such as ultrasonic testing and radiographic testing.

In summary, EN 10217-2 specifies the technical delivery conditions for electric welded tubes made of non-alloy and alloy steel for use in pressure systems at room temperature or at elevated temperatures. The standard covers tubes with a wide range of dimensions and shapes, and specifies the types of steel that can be used, as well as the heat treatment processes and inspection and testing procedures that must be carried out.

Supplier.

TAP Vietnam International Investment Joint Stock Company (TAP Vietnam) is a leading supplier of welded steel tubes that conform to the EN 10217-2 standard. The company is known for providing high-quality products to clients across various industries, including construction, manufacturing, and transportation. With a strong focus on quality and reliability, TAP Vietnam has established itself as a trusted partner for businesses seeking superior welded steel tubes. The company's commitment to excellence is reflected in its use of the latest technology and equipment to produce products that meet the strictest international standards. Whether you require welded steel tubes for structural or decorative purposes, TAP Vietnam is equipped to meet your needs with precision and efficiency.

Dimensions of Steel tube EN 10217-2
dimensions in mm
Outside diameter D series ^a			Wall thickness T
Outside diameter D series ^a			Wall thickness T
1	2	3	0.5	0.6	0.8	1	1.2	1.4	1.6	1.8	2	2.3	2.6	2.9	3.2	3.6	4	4.5	5	5.6
10.2
	12
	12.7
13.5
		14
	16
17.2
		18
	19
	20
21.3
		22
	25
		25.4
26.9
		30
	31.8
	32
33.7
		35
	38
	40
42.4
42.4		44.5
48.3
	51
		54
	57
60.3
	63.5
	70
		73
76.1
76.1		82.5
88.9
	101.6
		108
114.3
	127
	133
139.7
		141.3
		152.4
		159
168.3
		177.8
		193.7
219.1
219.1		244.5
273
323.9
355.6
406.4
457
508
508		559
610
610		660
711
711	762
813
813		864
914
1 016
1 067
1 118
1 118	1 168
1 219
1 219	1.321
1.422
Preferred dimensions (concluded)
dimensions in mm
Outside diameter D series ^a			Wall thickness T
1	2	3	6.3	7.1	8	8.8	10	11	12.5	14.2	16	17.5	20	22.2	25	28	30	32	36	40
		30
	31.8
	32
33.7
		35
	38
	40
42.4
		44.5
48.3
	51
		54
	57
60.3
	63.5
	70
		73
76.1
		82.5
88.9
	101.6
		108
114.3
	127
	133
139.7
		141.3
		152.4
		159
168.3
		177.8
		193.7
219.1
		244.5
273
323.9
355.6
406.4
457
508
		559
610
		660
711
	762
813
		864
914
1 016
1 067
1 118
	1 168
1 219
	1 321
1 422
	1 524
1 626
	1 727
1 829
	1 930
2 032
	2 134
2 235
	2 337
	2 438
2.540
^aseries 1 = diameters for which all the accessories needed for the construction of piping system are standardised; series 2 = diameters for which not all the accessories are standardised; series 3 = diameters for special application for which very few standardised accessories exist.



Tolerances Tolerances on diameter and thickness The diameter and the wall thickness of the tubes shall be within the tolerance limits given


Tolerances on outside diameter and wall thickness
dimension in mm
Outside diameter D					Tolerance on
					outside diameter D						wall thickness T^a
					outside diameter D						T ≤ 5					5 < T d ≤ 40
D ≤ 219,1					± 1% or ± 0,5 whichever is the greater						± 10 % or ± 0,3 whichever is the greater					± 8 % or ± 2 whichever is the smaller
D ≤ 219,1					± 1% or ± 0,5 whichever is the greater
D > 219,1					± 0,75 % or ± 6 whichever is the smaller
D > 219,1					± 0,75 % or ± 6 whichever is the smaller
Height of the weld seam The height of the external and internal weld seam shall be within the limits indicated


Maximum height of the weld seam for EW and BW tubes
dimension in mm
Manufacturing Process						Quality TR1								Quality TR2
Manufacturing Process						Outside				Inside				Outside				Inside
EW						Trimmed				1,5				Trimmed				0,5 + 0,05 T
BW						As rolled				0,5 + 0,05T				—				—
Maximum height of the weld seam for SAW tubes
dimensions in mm
Wall thickness T								Maximum height of the weld seam
Wall thickness T								Inside							Outside
T ≤ 12,5								3,5							3,5
T > 12,5								4,8							4,8
Height of the weld seam The height of the external and internal weld seam shall be within the limits indicated Radial offset of plate or strip edges at the weld for SAW tubes The radial offset of the abutting plate or strip edges shall be within the limits indicated



Maximum radial offset of the abutting plate or strip
dimensions in mm
Wall Thickness T								Maximum radial offset
T ≤ 12,5								1.6
T > 12,5								0,125 T with a max. of 3,2
Misalignment of the weld seam of SAW tubes Misalignment of the weld seam shall be acceptable provided complete penetration and complete fusion are achieved. Tolerances on exact length The tolerances for exact lengths shall be as given



Tolerances on exact length
dimensions in mm
Length								Tolerances on exact length for outside diameter (D)
L								< 406,4							≥ 406,4
L ≤ 6000								+10 0							+25 0
L ≤ 6000								+10 0							+25 0
6000 < L ≤ 12000								+15 0							+50 0
6000 < L ≤ 12000								+15 0							+50 0
L > 12000								+ by agreement 0
L > 12000								+ by agreement 0

Welded Steel tube E155, EN 10305-2	Welded Steel Tube 16Mo3, EN-10217-2	Welded Steel Tube P265GH, EN-10217-2
Welded Steel Tube P235GH, EN-10217-2	Welded Steel Tube P195GH, EN-10217-2	Welded Tube P195GH EN 10217-2

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