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EN10253-2 Butt Welding Elbow

Views: 69 Author: Site Editor Publish Time: 2024-01-11 Origin: Site

EN10253-2 standard is one of the standards developed by the European Committee for Standardization (CEN), which specifies the dimensional and material requirements for seamless and welded steel pipes and fittings. This standard is mainly applicable to seamless and welded steel pipes and fittings used in pressure applications, including elbows, tees, eccentric offsets, and pipe connections.

Butt welding elbow is the most widely used type of pipe fitting in pipeline systems. It plays a role in changing the direction of the pipeline in the pipeline system. EN10253-2 butt welding elbow can be divided into 45 degree elbow, 90 degree elbow and 180 degree elbow according to the angle; it can be divided into 2D elbow, 3D elbow and 5D elbow according to the bending radius.

EN10253-2 Butt Welding Elbow Dimension

2D Elbow Dimension

Table 10-Elbows model 2D-Dimensions
Dimensions in millimetres
DN	D	R	C	B-W
15	213	25	50	36
20	269	25	50	39
25	337	25	50	42
32	424	32	64	53
40	483	38	76	62
50	603	51	102	81
65	761	63	127	102
80	889	76	152	121
100	1,143	102	203	159
125	1,397	127	254	197
150	1,683	152	305	237
200	2,191	203	406	313
250	273	254	508	391
300	3,239	305	610	467
350	3,556	356	711	533
400	4,064	406	813	610
450	457	457	914	686
500	508	508	1016	762
550	559	559	1118	838
600	610	610	1220	914
650	660	660	1320	990
700	711	711	1422	1066
750	762	762	1524	1143
800	813	813	1626	1220
850	864	864	1728	1296
900	914	914	1828	1371
1000	1016	1016	2032	1524
1050	1067	1067	2134	1600
1100	1118	1118	2236	1677
1150	1166	1166	2332	1749
1200	1219	1219	2438	1830

3D Elbow Dimension

Table 11-Elbows model 3D-Dimensions
Dimensions in millimetres
DN	D	R	C	B-W-Z
15	213	38	76	49
20	269	38	76	51
25	337	38	76	56
	38	45	90	64
32	424	48	96	69
40	483	57	114	82
	51	63	126	88
	57	72	144	100
50	603	76	152	106
	70	92	184	127
65	761	95	190	133
80	889	114	228	159
	1,016	133	267	184
	108	1,425	285	196
100	1,143	152	304	210
	133	181	362	247
125	1,397	190	380	260
	159	216	432	295
150	1,683	229	457	313
	1,937	270	540	367
200	2,191	305	610	414
	2,445	340	680	462
250	273	381	762	518
300	3,239	457	914	619
350	3,556	533	1066	711
400	4,064	610	1220	813
450	457	686	1372	914
500	508	762	1524	1016
550	559	838	1676	1118
600	610	914	1828	1219
650	660	990	1980	1320
700	711	1067	2134	1422
750	762	1143	2286	1524
800	813	1219	2438	1626
850	864	1296	2592	1728
900	914	1372	2744	1829
1000	1016	1524	3048	2032
1050	1067	1600	3201	2134
1100	1118	1677	3354	2236
1150	1168	1752	3504	2336
1200	1219	1829	3658	2438

5D Elbow Dimension

Table 12-Elbows model 5D-Dimensions
Dimensions in millimetres
DN	D	R	C	B-W-Z
15	213	425	85	53
20	269	575	115	71
25	337	725	145	89
	38	825	165	101
32	424	925	185	114
40	483	1,095	219	134
	51	1,225	245	149
	57	130	260	158
50	603	1,375	275	168
	70	160	320	195
65	761	175	350	213
80	889	2,075	415	252
	1,016	235	470	286
	108	253	506	306
100	1,143	270	540	327
	133	3,115	623	378
125	1,397	330	660	400
	159	375	750	454
150	1,683	390	780	474
200	2,191	515	1030	624
	2,445	580	1160	702
250	273	650	1300	786
300	3,239	770	1540	932
350	3,556	850	1700	1028
400	4,064	970	1940	1173
450	457	1122	2244	1350
500	508	1245	2490	1500
550	559	1398	2796	1677
600	610	1525	3050	1830
650	660	1650	3300	1980
700	711	1778	3556	2133
750	762	1905	3810	2286
800	813	2033	4066	2439
850	864	2155	4310	2587
900	914	2285	4570	2742
1000	1016	2540	5080	3048
1050	1067	2665	5335	3201
1100	1118	2790	5580	3354
1150	1168	2915	5830	3504
1200	1219	3050	6100	3657

Tolerance Of Outer Diameter

Table 19-Tolerances on specificdimensions and form
				Dimensions in millimetres
D	F-G-L-W	B-Z	C	h	P
≤114,3	±2	±7	±7	±4	2
114,3<D≤219,1	±2	±7	±7	±7	4
219,1<D≤406,4	±3	±7	±10	±7	6
406,4<D≤762	±3	±10	±10	±7	7
762<D	±5	±12	±10	±10	9

Wall Thickness Tolerance

Table 18-Wall thickness tolerances at the welding ends
D mm	T mm	Wall thickness tolerance
D mm	T mm	Minus	Plus
≤610	≤4 >4	-12,5%	+20%
>610	Seamless	-12,5%	+20%
>610	Welded ≤10 >10	-0,35 mm -0,5 mm	+20%

Technical Requirements

Chemical Composition

EN10253-2 standard includes more than 20 European standard elbow materials such as P235TR, P265TR, P235GH, P265GH, 16Mo3, 10CrMo5-5, X10CrMoV Nb9-1, L360NB, etc. The following is a chemical composition table for each material grade.

Table 4-Chemical composition(castanalysis),in%by mass°
Steel name	Steel number	C	Si	Mn	P	S	Al tot	Cr	Cu	Mo	Nb	Ni	TI	V	Others
P235TR2	1.0255	0.16	0.35	120	25	0.020	≥0.020c	0.30b	0.30b	0.08b	1	30	0.04	2	Cr+Cu+Mo+N ≤0.70
P265TR2	1.0259	0.20	0.40	140	25	0.020	≥0.020c	0.30b	0,30b	0.08b	0.01	30	0.04	0.02
P235GH	1.0345	0.16	0.35	120	25	0.020	≥0.020	30	30	8	1	0.,30	0.04	2
P265GH	1.0425	020	40	140	25	0020	≥0.020	30	30	8	1	0.30	0.04	2
6Mo3	1.5415	0.12-020d	0.35	0,40-0,90	25	0020	S0,040	30	30	0.25-0.35		30
10CMo5-5	1.7338	0.15	0.50-1.00	0.30-0.60	0.025	0.020	s0.040	1.00-1,50	30	0.45-0.65	二	0.30		二	二
13CMo4-5	1.7335	0.10-0.17d	0.35	040-0.70	25	20	≤0.040	0.70-1,15	30	0,40-0.60		0.30
10CrMo9-10	1.7380	0.08-0.14	0.50	0.30-0.70	0.025	0.020	≤0.040	2.00-2,50	0.30	0.90-1.10	二	0.30			二
X11CrMo5	1.7382	0,08-0.15	0.15-0,50	0,30-0.60	25	0.020	S0.040	4.00-6,00	30	0,45-0.65	二				二
X11CrMo9-1	1.7386	0.08-0.15	0.25-1.00	.30-0.60	0.025	0020	≤0.040	8.00-10.00	0.30	0.90-1.10
X10CrMoV No9-1	1.4903	0,08-0.12	0.20-0.50	0,30-0,60	20	0.010	S0.040	8.00-9,50	30	0,85-1,05	0,06-0,10	0.40		0.18-0.25	N:0,030-0.070
P355N P355 NH	1.0562 1.0565	0.20	0.50	0,90-1,70	25	0.020	≥0.020	0.30b	0,30e	0,08e	5	0.50	0.04	0.10	NS0,02 Nb+Ti+V≤0.12
P355NL1	1.0566	0.18	0.50	0,90-1,70	25	0.020	≥0.020c	0.30b	0,30°	8	5	0.50	0.04	0.10	NS0.02 Nb+Ti+V≤0.12
P215NL	1.0451	0.15	0.35	0,40-1,20	25	0.020	≥0.020	0.30	30	0.08	0.10	0.30	0.04	0.02
P265NL	1.0453	0.20	0.40	0,60-1,40	25	0.020	≥0.020	0.30	30	8	10	0.30	0.04	0.02
12N14	1.5637	0.15	0.15-0,35	0,30-0.80	25	0.010	二	二	30		二	3.25-3,75	二	0.05
X1ON9	15682	0.13	0.15-0.35	.30-0.80	0.020	0.010	三		0.30	0.10		.50-9.50		0.05
L290NB	1.0484	0.17	0.40	120	25	0.020	0.015-0,060	30	25	0.10	5	0.30	0.04	5	NS 0.012 CEV≤0.42
L360NB	1.0582	0.20	0.45	160	0.025	0.020	0.015-0,060	0.30	0.25	0.10f	0.05	0.30	0.04	0.15	NS 0,012 V+Nb+Ti<0.15 CEVS0.45
L3600B	1.8948	0.16	0.45	140	25	0.020	0,015-0,060	30	25	0.10f	5	0.30	4	5	N≤0,012 CEVS0.42
L415NB	1.8972	0.21	0.45	160	25	0.020	0,015-0,060	0.30	0.25	0.10f	5	0.30	4	0.15	N≤0,012 V+Nb+TI s0.15
L4150B	1.8947	0.16	0.45	160	25	0.020	0,015-0,060	30	25	0.10	5	0.30	4	8	N≤0,012 V+Nb+Ti s0,15 CEV<0.43
L450QB	1.8952	0.16	0.45	160	25	0.020	0,015-0,060	30	25	0.10f	5	0.30	0.06	9	NS 0.012 V+Nb+Ti<0.15 CEVS0,45

Table 5-Permissible deviations of the product analysis from specified limits on cast analysis given
	in Table 4
Element	Limiting value forthe cast analysis in accordance with Table4 %by mass	Permissible deviation of theproduct analysis %by mass
C	≤0,21	±0,02
Si	≤0,40	±0,05
Si	>0,40 to≤1,00	±0,06
Mn	≤1,00	±0,05
Mn	>1,00 tos1,70	±0,10
P	≤0,025	+5
S	≤0,010	+3
S	>0,010≤0,020	+5
Al	≤0,060	±0,005
Cr	≤1,00	±0,05
Cr	>1,00 to≤10,00	±0,10
Cu	≤0,30	±0,05
Mo	≤0,35	±0,03
Mo	>0,35 tos1,10	±0,04
N	≤0,012	±0,01
Nb	≤0,10	±0,005
Ni	≤0,35	±0,05
Ni	>0,35to≤9,50	±0,07
Ti	≤0,060	+10
V	≤0,10	+1
V	>0,10 to≤0,25	±0,03

Mechanical Properties

Table6—Mechanical properties
Steel grade		Upper yield strengthor proofstrength ReH or R,azmin. for wall thicknesses T in mm N/mm²				Tensile strength Rm for wall thicknesses Tin mm Nmm²			Elongation Amin. %
Name	Number	Ts16	16<Ts40	40<Ts60	60<Ts100	Ts16	16<T<60	60<Ts100	Longitudinal	Transverse
P235TR2	1.0255	235	225	215		360-500	360-500		25	23
P265TR2	1.0259	265	255	245		410-570	410-570		21	19
P235GH	1.0345	235	225	215		360-500	360-500		25	23
P265GH	1.0425	265	255	245		410-570	410-570		23	21
16Mo3	1.5415	280	270	260		450-600	450-600		22	20
10CrMo5-5	1.7338	275	275	265		410-560	410-560		22	20
13CrMo4-5	1.7335	290	290	280		440-590	440-590		22	20
10CrMo9-10	1.7380	280	280	270		480-630	480-630		22	20
X11CrMo5+1	1.7362	175	175	175	175	430-580	430-580	430-580	22	20
X11CrMo5+NT1	1.7362	280	280	280	280	480-640	480-640	480-640	20	18
X11CrMo5+NT2	1.7362	390	390	390	390	570-740	570-740	570-740	18	16
X11CrMo9-1+1	1.7386	210	210	210		460-640	460-640		20	18
X11CrMo9-1+NT	1.7386	390	390	390		590-740	590-740		18	16
X10CrMoV Nb9-1	1.4903	450	450	450	450	630-830	630-830	630-830	19	17
P355N P355NH	1.0562 1.0562	355	345	325	305	490-650	490-630	450-590	22	20
P355NL1	1.0566	355	345	325	305	490-650	490-630	450-590	22	20
P215NL	1.0451	215a				360-480	360-480		25	23
P265NL	1.0453	265	265b			410-570	410-570		24	22
12Ni14	1.5637	345	345			440-590	440-590		22	20
X1ONi9	1.5682	510	510			690-840	690-840		20	18
L290NB	1.0484	290-440	290-440			2415			23	21
L360NB	1.0582	360-510	360-510			2460			22	20
L360QB	1.8948	360-510	360-510			≥460			22	20
L415NB	1.8972	415-565	415-565			≥520	≥520		20	18
L415QB	1.8947	415-565	415-565			2520	2520		20	18
L4500B	1.8952	450-570	450-570			≥535	≥535		20	18

Impact Properties

Table 9-Impact properties
Grade		Minimum average absorbed energy KV,inJ
		longitudinal direction						transverse direction
		at a temperature of (C)
		-50	-40	20	-10	0	20	-50	40	-20	-10	0	20
P235TR2						40						27
P265TR2						40		二				27	二
P235GH						40						27
P265GH			二			40						27
16Mo3			二				40						27
10CrMo5-5			二	二			40	二					27
13CrMo4-5							40						27
10CrMo9-10			二	二			40						27
X11CrMo5							40						27
X11CrMo9-1		二					40						27
X10CrMoVNb9-1							40						27
P355N P355NH				40	43	47	55			27	31	35	39
P355NL1			40	53	60	65	70		27	35	39	43	47
P215NL			40	45			55				二
P265NL		二	40	45	二		50	二	27	30	二		35
12N14a	T≤25	55	55	60			65	35	40	45	45	45	45
12N14a	25<TS 40	50	50	55	二		65	30	35	40	40	45	45
X10Ni9		70	70	70			70	50	50	50	50	50	50
L290NB						60						40
L360NB						60						40
L360QB						60						40
L415NB			二			60						40
L415QB				二		60						40
L450QB						60						40
a For lowertemperatures,the applicablevalues are thoseof the corresponding grade in EN 10216-4.

EN10253-2 butt welding elbows are mainly used in industrial piping systems, especially in those requiring certain pressure and temperature resistance. For example, the petroleum and natural gas industry, chemical industry, pharmaceutical industry, food processing industry, etc. In these fields, butt welding elbows are widely used for the connection and branching of pipelines to achieve the transmission and control of fluids (such as gases and liquids). In addition, EN10253-2 butt welding elbows are also commonly used in high-tech fields such as nuclear energy, aerospace, and marine. In these situations, the high quality and reliability of butt welding elbows are crucial to ensure the safety and performance of the entire system. In general, EN10253-2 butt welding elbows have a wide range of applications in various industrial piping systems that require pressure resistance, and their quality and performance play a vital role in the safety and reliability of the entire system.

EN10253-2 Butt Welding Elbow

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