18inch Butt Weld Long Radius 90 Degree Elbow ASME B16.9 A234 WPB

18’‘
Long Radius
90 Degree
A234 WPB

Carbon steel elbow is a weldable & threaded pipe fitting that allows for change of flow direction, we manufactured them as standard of ASME B16.9 and B16.11. ASTM A234 WPB Elbow is the common used in the oil and gas industires.

We have supplied our buttweld 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.

Supply Range of Carbon Steel Pipe Elbow

Standard: ASME B16.9, SH3408, HG/T21635, SY/T0510

Size: NPS 1/2″ to 48″ / DN 15 to 1200

Schedule: Sch 20, 40, STD, 80, 160, XXS

Designation: ASTM / ASME A234, A860, A420

Grade: WPB/C, WPHY 42, 46, 52, 60, 65, 70, WPL 3, 6, 9

Type: Seamless Elbow and Weld Elbow

Carbon Steel Chemical Properties

The common used carbon steel grades are ASTM A234 WPB and A420 WPL6 For low temperature service.

Grade	C	Mn	Si	S	P
A234 WPB	≤0.3	0.29 – 1.06	0.1	≤0.058	≤0.05
A420 WPL6	≤0.3	0.6 – 1.35	0.15 – 0.3	≤0.04	≤0.035

Long Radius Elbow

Fittings that change direction in a piping system are called elbows which available in 90 degree and 45 degree long radius elbow. Both of them has the center line at 1.5 x NPS from elbow end.

Short Radius 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.

Surface of Carbon Steel Elbow

Painting

Firstly, we do the blasting on the body of elbow, to clean the dirt things. Then paint the primer on the inner and outer side. The mainly purpose is against rust during the shipment.

PE Coating

Clean the steel pipe elbow body and wrap the polyethylene tape on it with adhesive. Usually the thickness of coating is 2mm. They are used in the underground pipeline system.

Galvanizing

Take carbon steel buttweld fittings into a bath of molten zinc. That would get more zinc and make the price is high.

We surfaced carbon steel forged fittings with electrogalvanizing because it is pretty and low cost.

Nominal Diameter		Outside Diameter at Bevel	A		B
DN	NPS	OD	Long Radius	Short Radius	Long Radius
15	1/2	21.3	38	–	16
20	3/4	26.9	38	–	19
25	1	33.7	38	25	22
32	1 1/4	42.4	48	32	25
40	1 1/2	48.3	57	38	29
50	2	60.3	76	51	35
65	2 1/2	73	95	64	44
80	3	88.9	114	76	51
90	3 1/2	101.6	133	89	57
100	4	114.3	152	102	64
125	5	139.7	190	127	79
150	6	168.3	229	152	95
200	8	219.1	305	203	127
250	10	273	381	254	159
300	12	323.9	457	305	190
350	14	355.6	533	356	222
400	16	406.4	610	406	254
450	18	457.2	686	457	286
500	20	508	762	508	318
550	22	559	838	559	343
600	24	610	914	610	381
650	26	660	991	660	406
700	28	711	1067	711	438
750	30	762	1143	762	470
800	32	813	1219	813	502
850	34	864	1295	864	533
900	36	914	1372	914	565
950	38	965	1448	965	600
1000	40	1016	1524	1016	632
1050	42	1067	1600	1067	660
1100	44	1118	1676	1118	695
1150	46	1168	1753	1168	727
1200	48	1220	1829	1220	759
1300	52	1321	1981	1321	821
1400	56	1422	2134	1422	883
1500	60	1524	2286	1524	947
1600	64	1626	2438	1626	1010
1700	68	1727	2591	1727	1073
1800	72	1829	2743	1829	1137
1900	76	1930	2896	1930	1199
2000	80	2032	3048	2032	1263