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Carbon Steel 90 Degree Elbow

Carbon steel 90 degree elbow is a common type of pipe fittings, and common connection methods include butt welding, thread, and socket weld. We manufacture according to ASME B16.9 and B16.11 standards. ASTM A234 WPB elbow is a commonly used elbow in the petroleum and natural gas industry.

We have supplied our butt weld fittings to major customers which business in Oil & Gas, Chemical & Petrochemical, Water treatment, Nuclear & Power Plant, Offshore platform & Shipbuilding. Our products are applicable for any kinds of severe operating condition such as high pressure and high temperature or cryogenic condition.

Long Radius & Short Radius Elbow

There are two main types of 90 degree elbows long radius (LR) and short radius (SR) elbows. Long-radius elbows have a longer center line radius than the pipe diameter, making them less abrupt in the change of direction. They are mainly used in low-pressure and low-velocity systems.

Long Radius Carbon Steel 90 Degree Elbow

Fittings that change direction in a piping system are called elbows which available in 90 degree long radius elbow. Both of them has the center line at 1.5 x NPS from elbow end.

Short Radius Carbon Steel 90 Degree Elbow

Short radius elbow almost same as above long radius,  the difference is center line to end is 1 x NPS and available in 90 degree only.

ASTM A105 90 Degree Elbow

ASTM A105 is mainly made of carbon steel material grade, and they are used for making forged pipe fittings. Carbon Steel 90 degree elbow is used to change the direction of pipeline flow.Forged 90 degree elbow is used for pipes with smaller diameters, and they are ideal to be used in a high-temperature application in a pressure system. We manufacture ASTM A105 elbow, which is very easy to use and needs low maintenance. It is one of the main reasons behind its popularity in various industries.

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Cu	Ni	Cr	Mo	V
ASTM A105	MIN		0.60			0.10
	MAX	0.35	1.05	0.035	0.040	0.35	0.40	0.40	0.30	0.12	0.08

Mechanical Properties

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %	R/A %	HARDNESS
ASTM A105	485 min	250 min	22 min	30 min	197 max

Dimension of Threaded Elbow

Nominal Size		Center-to-End				Outside Diameter of Band		Wall Thickness		Length of Thread
DN	NPS	A				H		Gmin		L 5 min	L 2 min
		90°Elbows		45°Elbows
		3000	6000	3000	6000	3000	6000	3000	6000
6	1/8	21	25	17	19	22	25	3.18	6.35	6.4	6.7
8	1/4	25	28	19	22	25	33	3.30	6.60	8.1	10.2
10	3/8	28	33	22	25	33	38	3.51	6.98	9.1	10.4
15	1/2	33	39	25	28	38	46	4.09	8.15	10.9	13.6
20	3/4	38	44	28	33	46	56	4.32	8.53	12.7	13.9
25	1	44	51	33	35	56	62	4.98	9.93	14.7	17.3
32	11/4	51	60	35	43	62	75	5.28	10.59	17.0	18.0
40	11/2	60	64	43	44	75	84	5.56	11.07	17.8	18.4
50	2	64	83	44	52	84	102	7.14	12.09	19	19.2
65	21/2	83	95	52	64	102	121	7.65	15.29	23.6	28.9
80	3	95	106	64	79	121	146	8.84	16.64	25.9	30.5
100	4	114	114	79	79	152	152	11.18	18.67	27.7	33

Dimension of Socket Weld Elbow

DN	NPS	B	G			C
			3000	6000	9000	3000		6000		9000
						ave	min	ave	min	ave	min
6	1/8	10.9	2.41	3.15	一	3.18	3.18	3.96	3.43	一	一
8	1/4	14.3	3.02	3.68	一	3.78	3.30	4.60	4.01	一	一
10	3/8	17.7	3.20	4.01	一	4.01	3.50	5.03	4.37	一	一
15	1/2	21.9	3.73	4.78	7.47	4.67	4.09	5.97	5.18	9.53	8.18
20	3/4	27.3	3.91	5.56	7.82	4.90	4.27	6.96	6.04	9.78	8.56
25	1	34.0	4.55	6.35	9.09	5.69	4.98	7.92	6.93	11.38	9.96
32	11/4	42.8	4.85	6.35	9.70	6.07	5.28	7.92	6.93	12.14	10.62
40	11/2	48.9	5.08	7.14	10.15	6.35	5.54	8.92	7.80	12.70	11.12
50	2	61.2	5.54	8.74	11.07	6.93	6.04	10.92	9.50	13.84	12.12
65	21/2	73.9	7.01	一		8.16	7.62		一	一
80	3	89.9	7.62	一		9.52	8.30	一	一
100	4	115.5	8.56	一		10.69	9.35			一

ASTM A234 Carbon Steel 90 Degree Elbow

ASTM A234 is standard specification for wrought carbon steel & alloy steel pipe fittings which covers seamless and welded types.

The specification for the carbon steel 90 degree elbow, covers steel pipe fittings such as the carbon steel elbow A234 WPB which are primarily used in applications for the pressure piping systems. Generally these Elbow A234 Wpc fittings are designed to be used in moderate and high temperature applications . The A234 SR elbow is the standard of pipe fittings material, which indicates the materials properties of different kinds of carbon steel and alloy steel. One such steel grade in this standard is the WPB . In the term WPB, W means weldable, P stands for pressure, while B is grade b. B refers to the minimum yield strength, such as the ASTM A106/A53 Gr.B or API 5L Gr.B. A234 WPB, which is the most common material used in the manufacture of carbon steel pipe fittings.

W = WELDABLE / wrought

P = RELATED TO P NUMBER OF ALLOY MATERIAL

B = REFER TO MINIMUM YIELD OF MATERIAL

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Cr	Mo	Ni	Cu	V
ASTM A234 WPB	MIN		0.29			0.10
	MAX	0.30	1.06	0.050	0.058		0.40	0.15	0.40	0.40	0.08

Mechanical Properties

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %	R/A %	HARDNESS
ASTM A234 WPB	415 min	240 min	22 min	30 min	197 max

Dimension of Butt Weld Elbow

DN	NPS	OD(MM)	A
			LR	SR
15	1/2	21.3	38	25
20	3/4	26.7	38	25
25	1	33.4	38	25
32	1-1/4	42.2	48	32
40	1-1/2	48.3	57	38
50	2	60.3	76	51
65	2-1/2	73	95	64
80	3	88.9	114	76
90	3-1/2	101.6	133	89
100	4	114.3	152	102
125	5	141.3	190	127
150	6	168.3	229	152
200	8	219.1	305	203
250	10	273	381	254
300	12	323.8	457	305
350	14	355.6	533	356
550	22	559	838	559
600	24	610	914	610
650	26	660	991	660
700	28	711	1067	711
750	30	762	1143	762
800	32	813	1219	813
850	34	864	1295	864
900	36	914	1372	914
950	38	965	1447	965
1000	40	1016	1524	1016
1050	42	1067	1600	1067
1100	44	1118	1676	1118
1150	46	1168	1753	1168
1200	48	1219	1829	1219
1300	52	1321	1981	1321
1400	56	1422	2134	1422
1500	60	1524	2286	1524
1600	64	1626	2438	1626

Carbon steel butt weld fittings use seamless or welded pipe as starting material and process to the shape of elbows, tees & reducers by hot and cold forming.

China manufacturer supplies various of carbon steel butt weld fittings, they are 90 degree elbow, straight and reducing tee, concentric and eccentric reducer, cap, stub end. Why more and more people choose butt welding even if the operation is difficult?

Leak proof and Strong

Good Strength

Corrosion Resistance

Low Cost

Universal and Economical

Large Output

Wild Application

11 6 月, 2024