ASTM A234 WPB Tee

ASTM A234 WPB Tee is a crucial component in pipeline systems, used extensively in industries such as petrochemical, oil and gas, power generation, and chemical processing. These fittings are designed to handle high-pressure and high-temperature environments, making them suitable for a wide range of industrial applications. ASTM A234 WPB Tee is a type of pipe fitting that allows the branching of a pipeline system into two or more directions. The “Tee” shape includes one inlet and two outlets (or vice versa), which can be of the same or varying diameters. The WPB designation stands for:

• W: Weldable
• P: Pressure-grade
• B: Grade B material, typically carbon steel

Key Features 

• Material: High-grade carbon steel (Grade B).
• Pressure Handling: Designed to withstand high-pressure environments.
• Temperature Resistance: Suitable for both moderate and high-temperature applications.
• Corrosion Resistance: Can be enhanced with additional coatings or galvanization.
• Versatility: Available in various sizes, wall thicknesses, and configurations.
• Durability: Manufactured to endure mechanical stresses and harsh conditions.

ASTM A234 WPB Dimensions

ASTM A234 WPB Straight / Equal Tee Dimensions

NOMINAL PIPE SIZE	OUTSIDE DIAMETER	CENTER TO END	LENGTH
Inch.	OD	C	M
1/2	21.3	25	25
3/4	26.7	29	29
1	33.4	38	38
1 1/4	42.2	48	48
1 1/2	48.3	57	57
2	60.3	64	64
2 1/2	73	76	76
3	88.9	86	86
3 1/2	101.6	95	95
4	114.3	105	105
5	141.3	124	124
6	168.3	143	143
8	219.1	178	178
10	273.1	216	216
12	323.9	254	254
14	355.6	279	279
16	406.4	305	305
18	457.2	343	343
20	508	381	381
22	559	419	419
24	610	432	432
26	660	495	495
28	711	521	521
30	762	559	559
32	813	597	597
34	864	635	635
36	914	673	673
38	965	711	711
40	1016	749	749
42	1067	762	711
44	1118	813	762
46	1168	851	800
48	1219	889	838

ASTM A234 WPB Reducing Tee Dimensions

NOMINAL PIPE SIZE	OUTSIDE DIAMETER		CENTER TO END
Inch	D	P	C	M
1/2 x 3/8	21.3	17.1	25	25
1/2 x 1/4	21.3	13.7	25	25
3/4 x 1/2	26.7	21.3	29	29
3/4 x 3/8	26.7	17.1	29	29
1 x 3/4	33.4	26.7	38	38
1 x 1/2	33.4	21.3	38	38
1 1/4 x 1	42.2	33.4	48	48
1 1/4 x 3/4	42.2	26.7	48	48
1 1/4 x 1/2	42.2	21.3	48	48
1 1/2 x 1 1/2	48.3	42.2	57	57
1 1/2 x 1	48.3	33.4	57	57
1 1/2 x 3/4	48.3	26.7	57	57
1 1/2 x 1/2	48.3	21.3	57	57
2 x 1 1/2	60.3	48.2	64	60
2 x 1 1/4	60.3	42.2	64	57
2 x 1	60.3	33.4	64	51
2 x 3/4	60.3	26.7	64	44
2 1/2 x 2	73	60.3	76	70
2 1/2 x 1 1/2	73	48.3	76	67
2 1/2 x 1 1/4	73	42.2	76	64
2 1/2 x 1	73	33.4	76	57
3 x 2 1/2	88.9	73	86	83
3 x 2	88.9	60.3	86	76
3 x 1 1/2	88.9	48.3	86	73
3 x 1 1/4	88.9	42.2	86	70
3 1/2 x 3	101.6	88.9	95	92
3 1/2 x 21/2	101.6	73	95	89
3 1/2 x 2	101.6	60.3	95	83
3 1/2 x 1 1/2	101.6	48.3	95	79
4 x 3 1/2	114.3	101.6	105	102
4 x 3	114.3	88.9	105	98
4 x 2 1/2	114.3	73	105	95
4 x 2	114.3	60.3	105	89
4 x 1 1/2	114.3	48.3	105	86
5 x 4	141.3	114.3	124	117
5 x 3 1/2	141.3	101.6	124	114
5 x 3	141.3	88.9	124	111
5 x 2 1/2	141.3	73	124	108
5 x 2	141.3	60.3	124	105
6 x 5	168.3	141.3	143	137
6 x 4	168.3	114.3	143	130
6 x 3 1/2	168.3	101.6	143	127
6 x 3	168.3	88.9	143	124
6 x 2 1/2	168.3	73	143	121
8 x 6	219.1	168.3	178	168
8 x 5	219.1	141.3	178	162
8 x 4	219.1	114.3	178	156
8 x 3 1/2	219.1	101.6	178	152
10 x 8	273.1	219.1	216	203
10 x 6	273.1	168.1	216	194
10 x 5	273.1	141.3	216	191
10 x 4	273.1	114.3	216	184
12 x 10	323.9	273.1	254	241
12 x 8	323.9	219.1	254	229
12 x 6	323.9	168.3	254	219
12 x 5	323.9	141.3	254	216
14 x 12	355.6	323.9	279	270
14 x 10	355.6	273.1	279	257
14 x 8	355.6	219.1	279	248
14 x 6	355.6	168.3	279	238
16 x 14	406.4	355.6	305	305
16 x 12	406.4	323.9	305	295
16 x 10	406.4	273.1	305	283
16 x 8	406.4	219.1	305	273
16 x 6	406.4	168.3	305	264
18 x 16	457	406.4	343	330
18 x 14	457	355.6	343	330
18 x 12	457	323.9	343	321
18 x 10	457	273.1	343	308
18 x 8	457	219.1	343	298
20 x 18	508	457	381	368
20 x 16	508	406.4	381	356
20 x 14	508	355.6	381	356
20 x 12	508	323.9	381	346
20 x 10	508	273.1	381	333
20 x 8	508	219.1	381	324
22 x 20	559	508	419	406
22 x 18	559	457	419	394
22 x 16	559	406.4	419	381
22 x 14	559	355.6	419	381
22 x 12	559	323.9	419	371
24 x 10	559	273.1	419	359
24 x 22	610	559	432	432
24 x 20	610	508	432	432
24 x 18	610	457	432	419
24 x 16	610	406.4	432	406
24 x 14	610	355.6	432	406
24 x 12	610	323.9	432	397
24 x 10	610	273.1	432	384

Pipe Fitting Tolerance

NOMINAL PIPE SIZE	ALL FITTINGS	ALL FITTINGS	ALL FITTINGS	ELBOWS AND TEES	180 DEG RETURN BENDS	180 DEG RETURN BENDS	180 DEG RETURN BENDS	REDUCERS	CAPS
NPS	O.D. at Bevel (1), (2)	I.D. at End	Wall Thickness (3)	Centre-to-End Dimension A,B,C,M	Centre-to-Centre O	Back-to-Face K	Alignment of Ends U	Overall Length H	Overall Length E
		(1), (3), (4)
½ to 2½	0.06	0.03	Not less than 87.5% of nominal thickness	0.06	0.25	0.25	0.03	0.06	0.12
	-0.03
3 to 3 ½	0.06	0.06		0.06	0.25	0.25	0.03	0.06	0.12
4	0.06	0.06		0.06	0.25	0.25	0.03	0.06	0.12
5 to 8	0.09	0.06		0.06	0.25	0.25	0.03	0.06	0.25
	-0.06
10 to 18	0.16	0.12		0.09	0.38	0.25	0.06	0.09	0.25
	-0.12
20 to 24	0.25	0.19		0.09	0.38	0.25	0.06	0.09	0.25
	-0.19
26 to 30	0.25	0.19		0.12	…	…	…	0.19	0.38
	-0.19
32 to 48	0.25	0.19		0.19	…	…	…	0.19	0.38
	-0.19

 

NOMINAL PIPE SIZE NPS	ANGULARITY TOLERANCES	ANGULARITY TOLERANCES
	Off Angle Q	Off Plane P
½ to 4	0.03	0.06
5 to 8	0.06	0.12
10 to 12	0.09	0.19
14 to 16	0.09	0.25
18 to 24	0.12	0.38
26 to 30	0.19	0.38
32 to 42	0.19	0.5
44 to 48	0.18	0.75

Types of ASTM A234 WPB Tee

• Equal Tee:

• Reducing Tee:

Manufacturing Process

ASTM A234 WPB Tees are manufactured through several standardized processes to ensure durability and precision:

1. 1. Raw Material Selection: High-quality carbon steel is chosen as the base material, adhering to the chemical composition specified in ASTM A234.
   2. Forging: The material is heated and shaped under high pressure to achieve the desired dimensions and structural integrity.
   3. Forming: Hot or cold forming methods are used to create the “Tee” shape.

• Heat Treatment:

1. • Normalizing or annealing processes are applied to enhance material properties like strength, ductility, and toughness.
2. Inspection and Testing: The finished products undergo rigorous quality checks, including visual inspection, dimensional analysis, and non-destructive testing (NDT).
3. Marking and Certification: Each fitting is marked with details such as size, material grade, and specification to ensure traceability.

Testing and Quality Control

To ensure reliability, ASTM A234 WPB Tees are subjected to stringent testing protocols:

1. Hydrostatic Testing: Verifies the fitting’s ability to withstand internal pressure without leakage.
2. Radiographic Testing (RT): Identifies internal defects or inclusions.
3. Magnetic Particle Inspection (MPI): Detects surface and near-surface flaws.
4. Ultrasonic Testing (UT): Ensures internal soundness.
5. Chemical Analysis: Confirms adherence to specified chemical composition.
6. Mechanical Testing: Includes tensile, hardness, and impact tests.

Applications 

The versatility and robustness of ASTM A234 WPB Tee make it suitable for diverse applications, including:

• Oil and Gas Industry: Used in pipelines for transporting crude oil and natural gas.
• Petrochemical Plants: Facilitates the distribution of chemicals and by-products.
• Power Plants: Suitable for high-pressure steam and water lines.
• Water Treatment Facilities: Ensures efficient flow control and distribution.
• Shipbuilding: Used in fuel and hydraulic systems.
• Construction: Integral to HVAC systems and fire-fighting pipelines.

Advantages 

1. High Durability: Built to last in extreme conditions.
2. Pressure and Temperature Resilience: Performs efficiently in challenging environments.
3. Ease of Fabrication: Can be welded and machined easily.
4. Cost-Effective: Combines affordability with performance.

Conclusion

ASTM A234 WPB Tee is an indispensable fitting in pipeline systems, offering unmatched reliability, durability, and performance. Its ability to withstand high pressures and temperatures makes it a preferred choice for industries worldwide. By adhering to strict manufacturing standards and rigorous quality checks, these tees ensure seamless operation and long-lasting service in demanding environments. Whether used in the oil and gas sector, power plants, or construction projects, ASTM A234 WPB Tee remains a benchmark of quality and efficiency in piping solutions.