ASTM A234 WPB Elbow

ASTM A234 WPB is a common grade for 90 degree long radius elbow, which is one of the highly demanded. They available in a large size and thickness range. They have a good performance and suffices most industrial pipeline needs.

Zizi exports high quality carbon steel elbows both in large and small quantities and offers test report and mill certificate for customers.

ASTM A234 WPB

ASTM A234: This is a material standard specification for wrought carbon and alloy steel pipe fittings for use in moderate- and high-temperature pressure-containing piping.

WPB: This is a specific grade within the ASTM A234 standard.

The “W” stands for “Wrought,” meaning the fitting is manufactured by processes such as forging, stamping, extrusion, and bending, rather than casting.

The “P” stands for “Pressure,” indicating that the fitting is suitable for use in pressure piping systems.

The “B” stands for “Grade B,” similar to Grade B in piping standards such as ASTM A106 or API 5L, and refers to its minimum yield strength.

Specification of ASME B16.9 90 Degree Elbow Fitting

Size Range	1/2″ – 80″ / DN15 – 2000
Thickness Schedule	SCH 10, 20, 40, STD, XS, 80, 100, 120, 140, 160, XXS
Standard	ANSI / ASME B16.9, MSS SP 43, JIS B2311/2312/2313, EN10253
Carbon Steel Grades	ASTM A234 WPB/WPC, A420 WPL6, A860 WPHY 42 / 46 / 56 / 60 / 65

ASME B16.9 ASTM A234 WPB 90 Degree LR SMLS Elbow

The radius of curvature (R) is 1.5 times the nominal pipe size (NPS) or outside diameter (D). (R = 1.5D). This provides a smoother turn, reducing friction, turbulence, and pressure drop. It’s generally preferred when space allows and flow efficiency is critical.

ASME B16.9 ASTM A234 WPB 90 Degree SR SMLS Elbow

The radius of curvature (R) is equal to the nominal pipe size (NPS) or outside diameter (D). (R = 1.0D). This results in a sharper turn, increasing turbulence and pressure drop, but it is more compact and suitable for tight spaces where a smaller bend is necessary.

ASTM A234 WPB Elbow Dimensions

Diameter: DN20 to DN1500/ 3/4” to 60”

Schedule: Sch 20, STD, 40, XS, 80, 100, 120, 160, XXS

Radius: Short Radius (SR) and Long Radius (LR)

Type: Seamless and Welded

Surface: Black Primer, Galvanized, PE Coated.

Nominal Size		Outside Diameter at Bevel	Center to End
			90°  Elbows		45°  Elbows
DN	NPS	OD	A		B
			LR	SR	LR
15	1/2	21.3	38		16
20	3/4	26.7	38		19
25	1	33.4	38	25	22
32	1 1/4	42.2	48	32	25
40	1 1/2	48.3	57	38	29
50	2	60.3	76	51	35
65	2 1/2	73.0	95	64	44
80	3	88.9	114	76	51
90	3 1/2	101.6	133	4、89	57
100	4	114.3	152	102	64
125	5	141.3	190	127	79
150	6	168.3	229	152	95
200	8	219.1	305	203	127
250	10	273.0	381	254	159
300	12	323.8	457	305	190
350	14	355.6	533	356	222
400	16	406.4	610	406	254
450	18	457.0	686	457	286
500	20	508.0	762	508	318
550	22	559.0	838	559	343
600	24	610.0	914	610	381
650	26	660.0	991	660	406
700	28	711.0	1067	711	438
750	30	762.0	1143	762	470
800	32	813.0	1219	813	502
850	34	864.0	1295	864	533
900	36	914.0	1372	914	565
950	38	965.0	1448	965	600
1000	40	1016.0	1524	1016	632
1050	42	1067.0	1600	1067	660
1100	44	1118.0	1676	1118	695
1150	46	1168.0	1753	1168	727
1200	48	1219.0	1829	1219	759

90 Degree LR Elbow Weight Chart

IMPERIAL SIZE	A	B	C	WALL THICKNESS	APPROX. KG/PC
1/2	21.3	15.7	38.1	2.8	0.08
3/4	26.7	20.9	38.1	2.9	0.08
1	33.4	26.6	38.1	3.4	0.15
11/4	42.2	35.0	47.8	3.6	0.16
11/2	48.3	40.9	57.2	3.7	0.4
2	60.3	52.5	76.2	3.9	0.7
21/2	73.0	62.6	95.2	5.2	1.3
3	88.9	77.9	114.3	5.5	2.0
31/2	101.6	90.2	133.4	5.7	2.8
4	114.3	102.3	152.4	6.1	3.8
5	141.3	128.1	190.5	6.6	6.5
6	168.3	154.1	228.6	7.1	10.1
8	219.1	202.7	304.8	8.2	20.1
10	273.1	254.5	381.0	9.3	36.0
12	323.9	304.9	457.2	9.5	53.0
14	355.6	336.54	533	9.53	68.0
16	406.4	387.34	610	9.53	89.0
18	457	437.94	686	9.53	113.0
20	508	488.94	762	9.53	140.0
24	610	590.94	914	9.53	202.0

ASTM A234 WPB Steel Pipe Fittings Standard Specification

Scope

This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction covered by the latest revision of ASME B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, and MSS-SP-97. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. Fittings differing from these ASME and MSS standards shall be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M.

Heat Treatment

Heat Treatment Procedures—Fittings, after forming at an elevated temperature, shall be cooled to a temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air. Heat treatment temperatures specified are metal (part) temperatures.

Materials and Manufacturing

The raw material for making ASTM A234 fittings hall be fully killed, consisting of forgings, bars, plates, sheet, and seamless or fusion-welded pipe products with filler metal added and shall conform to the chemical requirements of Table 1. Unless specified for carbon steel plates or sheet, the steel may be made to either coarse grain or fine grain practice. Which ASTM A234 WP9 shall be made to fine grain practice.

Forgings or forming operations could be perfomred by hammering, pressing, piercing, upseting, rolling, extruding, bending, fusion welding, machining, or by a combination of two or more above operations. Which the point of manufacturing is not to produce injurious imperfections in the fittings.

How Many Grades for ASTM A234 Pipe Fittings

ASTM A234 WPB, ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91

How Many Types of Steel Pipe Elbow?

According to the shape, there are straight and reducing elbow.

Depending on the angle, there are normally 45 degree, 90 degree and 180 degree elbow.

As based on radius, there are long radius ( 1.5D) and short radius ( 1D) elbow.

For connection, they can divided into socket weld elbow, butt weld elbow and threaded elbow.

Carbon Steel Fittings

Package of 90 Degree Elbow

We marked all Carbon Steel Buttweld Fittings with Name, Grade, Heat No, Size, Standard and Schedule Thickness. After done of  blasting, painting and marking of 90 Degree ASTM A234 WPB Elbow, our workers wrapped them with plastic foam and packed them into wooden cases or pallets.

Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. great care is taken during operation and transportation.

Inspection of Butt Weld Elbow Fitting

Visual the surface of butt weld elbow body.

Measure and record of outside diameter, wall thickness, center to end and center to center.

Check the marking ” 6” Sch 40 LR 90° ASTM A234 WPB ASME B16.9 Z168″

Advantages of Carbon Steel Pipe Elbow

• Good quality
• Abundant stock
• Safe package
• Various types
• Full specification

Applications

Oil and gas pipelines

Power generation (power plants)

Chemical and petrochemical industries

Shipbuilding

Water treatment and general industrial piping