Buttweld Reducing Tee: Dimensions, Sizes, and Prices

At Fortune Fittings Pvt. Ltd., we take pride in offering top-notch Buttweld Reducing Tee designed to meet diverse industrial needs. As trusted manufacturers and suppliers of ASME B16.9 Tee fittings, we prioritize quality, precision, and reliability in every product we deliver.

Buttweld Reducing Tees are crucial pipe fittings used to connect three pipes at right angles, forming a T-junction with one outlet smaller in diameter than the other two. This unique design enables efficient flow regulation and distribution within piping systems, making them ideal for various industrial applications.

Our commitment to excellence ensures that our Buttweld Reducing Tees are manufactured to the highest quality standards, meeting the stringent requirements of industries such as oil and gas, petrochemical, and construction. Utilizing advanced manufacturing techniques and equipment, we produce Buttweld ANSI B16.9 Tees that are precise, durable, and reliable, ensuring optimal performance in demanding environments.

Fortune Fittings Pvt. Ltd. offers Buttweld Reducing Tees in a wide range of dimensions, including different sizes, materials, and pressure ratings, to suit diverse project requirements. Explore our ready inventory of Buttweld Reducing Tees, available in various size ranges, including 1 1/4, 1 1/2, 2, 2 1/2, and more, to meet your specific needs.

For detailed specifications and quick quotes tailored to your requirements, contact us today! Experience the reliability and efficiency of Fortune Fittings Pvt. Ltd.’s Buttweld Reducing Tees for your next project.

What is a Buttweld Reducing Tee?

A Buttweld Reducing Tee is a type of pipe fitting used to connect three pipes at right angles, forming a T-junction with one outlet smaller in diameter than the other two. This unique design allows for the efficient regulation and distribution of fluid or gas flow within piping systems where pipes of different sizes need to be joined.

Buttweld Reducing Tee dimensions

The dimensions of a Buttweld Reducing Tee play a crucial role in ensuring proper fit and functionality within a piping system.
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Materials Used in Buttweld Reducing Tee

Buttweld Reducing Tees are manufactured using a variety of high-quality materials, carefully chosen based on their specific properties and suitability for various applications. Common materials used in the construction of Buttweld Reducing Tees include:

1. Stainless Steel: Known for its excellent corrosion resistance, strength, and durability, stainless steel is widely used in industries where hygiene and corrosion resistance are critical, such as food processing, pharmaceuticals, and chemical processing.

2. Carbon Steel: Renowned for its high strength and affordability, carbon steel is commonly used in industrial applications where high pressure and temperature are present, such as oil and gas pipelines, power plants, and construction.

3. Alloy Steel: Alloy steel contains additional alloying elements such as chromium, molybdenum, or nickel, which enhance its mechanical properties, corrosion resistance, and temperature resistance. Alloy steel Buttweld Reducing Tees are often used in demanding applications such as aerospace, automotive, and petrochemical industries.

4. Duplex Stainless Steel: Duplex stainless steel offers a combination of high strength and corrosion resistance, making it suitable for harsh environments such as offshore oil and gas platforms, marine applications, and chemical processing plants.

5. Nickel Alloys: Nickel alloys exhibit exceptional corrosion resistance, heat resistance, and strength at elevated temperatures, making them ideal for applications in chemical processing, aerospace, and marine industries where corrosion and temperature extremes are common.

The choice of material depends on factors such as the operating environment, temperature, pressure, and fluid characteristics. Manufacturers select materials based on these considerations to ensure optimal performance, longevity, and compatibility with specific applications.

Applications of Buttweld Reducing Tee

Buttweld Reducing Tees serve critical roles in various industries due to their ability to facilitate efficient flow regulation and distribution within piping systems where pipes of different sizes need to be joined. Some common applications include:

1. Oil and Gas Industry: Used in pipelines for transporting crude oil, natural gas, and refined petroleum products, enabling seamless integration of pipes with varying diameters while maintaining optimal flow rates.

2. Petrochemical Industry: Employed in chemical processing plants and refineries for directing fluid flow to different processing units, reactors, and storage tanks, ensuring efficient operation and process control.

3. Chemical Processing: Utilized in chemical manufacturing facilities for mixing, blending, and transporting various chemicals, acids, and solvents, facilitating precise flow control and distribution.

4. Construction: Applied in construction projects for plumbing and drainage systems, allowing for the integration of pipes with different sizes to meet specific building requirements while ensuring efficient water and wastewater management.

5. HVAC (Heating, Ventilation, and Air Conditioning): Integral in HVAC systems for distributing air or refrigerant flow among different branches, optimizing temperature control and air quality in residential, commercial, and industrial buildings.

6. Water Treatment Plants: Utilized in water treatment facilities for directing the flow of treated water, chemicals, and wastewater to various treatment processes, ensuring effective water purification and treatment.

7. Marine Applications: Installed in shipbuilding for piping systems aboard vessels, facilitating efficient flow distribution of fluids for propulsion, cooling, and other onboard systems.

8. Food and Beverage Industry: Used in food processing plants for conveying liquids, sauces, and ingredients, ensuring hygienic and efficient flow control during the manufacturing process.

The versatility and reliability of Buttweld Reducing Tees make them indispensable components in numerous industrial applications where efficient flow regulation and distribution are essential for optimal performance and productivity.

Purchase Buttweld Reducing Tee

For detailed information on ASME B16.9 Buttweld Reducing Tee, including types, weight chart, size chart, tolerance, and dimensions with drawings, click on your desired fittings. Need a quick quote or price list? CLICK HERE!

ASME B16.9 Buttweld Fittings Types and Applications

ASME B16.9 standards cover a wide range of buttweld fittings, including:

These fittings find applications across various industries, offering reliable performance and leak-free connections in critical piping systems.

Optimizing Your Piping System with Buttweld Fittings

Whether you’re in the chemical, fabrication, food processing, or power generation industry, choosing the right buttweld fittings is essential for optimizing your piping system’s performance. From stainless steel pipe fittings to butt weld pipe fittings, Fortune Fittings Pvt. Ltd. offers a comprehensive range of high-quality fittings to meet your specific requirements.

In conclusion, buttweld fittings play a crucial role in ensuring the efficiency and reliability of piping systems across industries. By understanding the types, materials, and applications of buttweld fittings, you can make informed decisions to optimize your piping infrastructure for long-term success.

For more information on buttweld fittings and other piping components, visit [Fortune Fittings Pvt. Ltd.] today!

Buttweld Dimensions

Elbow 90deg. LR

Dimensions Butt Weld Elbows
45°-90° LR and 3D ASME B16.9

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NPS	O.D.D	90° LRA	45° LRB	90° 3DA	45° 3DB
1/2	21.3	38	16
3/4	26.7	38	19	57	24
1	33.4	38	22	76	31
1.1/4	42.2	48	25	95	39
1.1/2	48.3	57	29	114	47
2	60.3	76	35	152	63
2.1/2	73	95	44	190	79
3	88.9	114	51	229	95
3.1/2	101.6	133	57	267	111
4	114.3	152	64	305	127
5	141.3	190	79	381	157
6	168.3	229	95	457	189
8	219.1	305	127	610	252
10	273	381	159	762	316
12	323.8	457	190	914	378
14	355.6	533	222	1067	441
16	406.4	610	254	1219	505
18	457	686	286	1372	568
20	508	762	318	1524	632
22	559	838	343	1676	694
24	610	914	381	1829	757
26	660	991	406	1981	821
28	711	1067	438	2134	883
30	762	1143	470	2286	946
32	813	1219	502	2438	1010
34	864	1295	533	2591	1073
36	914	1372	565	2743	1135
38	965	1448	600	2896	1200
40	1016	1524	632	3048	1264
42	1067	1600	660	3200	1326
44	1118	1676	695	3353	1389
46	1168	1753	727	3505	1453
48	1219	1829	759	3658	1516

Dimensions are in millimeters unless otherwise indicated. Wall thickness
Dimensional Tolerances of Butt Weld Elbows 45° & 90° LR & 3D ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8
Outside Diameterat Bevel (D)	+ 1.6– 0.8	1.6	1.6	+ 2.4– 1.6
Inside Diameter at End	0.8	1.6	1.6	1.6
Center to End LR (A/B)	2	2	2	2
Center to End 3D (A/B)	3	3	3	3
Nominal Pipe Size	10 to 18	20 to 24	26 to 30	32 to 48
Outside Diameterat Bevel (D)	+ 4– 3.2	+ 6.4– 4.8	+ 6.4– 4.8	+ 6.4– 4.8
Inside Diameter at End	3.2	4.8	+ 6.4– 4.8	+ 6.4– 4.8
Center to End LR (A/B)	2	2	3	5
Center to End 3D (A/B)	3	3	6	6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted. Note..MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 – NPS 24. Except with regard to the outside diameter at the bevel.

Elbow 45deg. LR

Dimensions Butt Weld Elbows

45°-90° LR and 3D ASME B16.9

NPS	O.D.D	90° LRA	45° LRB	90° 3DA	45° 3DB
1/2	21.3	38	16
3/4	26.7	38	19	57	24
1	33.4	38	22	76	31
1.1/4	42.2	48	25	95	39
1.1/2	48.3	57	29	114	47
2	60.3	76	35	152	63
2.1/2	73	95	44	190	79
3	88.9	114	51	229	95
3.1/2	101.6	133	57	267	111
4	114.3	152	64	305	127
5	141.3	190	79	381	157
6	168.3	229	95	457	189
8	219.1	305	127	610	252
10	273	381	159	762	316
12	323.8	457	190	914	378
14	355.6	533	222	1067	441
16	406.4	610	254	1219	505
18	457	686	286	1372	568
20	508	762	318	1524	632
22	559	838	343	1676	694
24	610	914	381	1829	757
26	660	991	406	1981	821
28	711	1067	438	2134	883
30	762	1143	470	2286	946
32	813	1219	502	2438	1010
34	864	1295	533	2591	1073
36	914	1372	565	2743	1135
38	965	1448	600	2896	1200
40	1016	1524	632	3048	1264
42	1067	1600	660	3200	1326
44	1118	1676	695	3353	1389
46	1168	1753	727	3505	1453
48	1219	1829	759	3658	1516

Dimensions are in millimeters unless otherwise indicated. Wall thickness Dimensional Tolerances of Butt Weld Elbows 45° & 90° LR & 3D ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8
Outside Diameterat Bevel (D)	+ 1.6– 0.8	1.6	1.6	+ 2.4– 1.6
Inside Diameter at End	0.8	1.6	1.6	1.6
Center to End LR (A/B)	2	2	2	2
Center to End 3D (A/B)	3	3	3	3
Nominal Pipe Size	10 to 18	20 to 24	26 to 30	32 to 48
Outside Diameterat Bevel (D)	+ 4– 3.2	+ 6.4– 4.8	+ 6.4– 4.8	+ 6.4– 4.8
Inside Diameter at End	3.2	4.8	+ 6.4– 4.8	+ 6.4– 4.8
Center to End LR (A/B)	2	2	3	5
Center to End 3D (A/B)	3	3	6	6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Elbow 90deg. SR

Butt Weld Elbows 90°-SR- ASME B16.9

NPS	O.D.D	cteA	NPS	O.D.D	cteA
1	33.4	25	8	219.1	203
1.1/4	42.2	32	10	273	254
1.1/2	48.3	38	12	323.8	305
2	60.3	51	14	355.6	356
2.1/2	73	64	16	406.4	406
3	88.9	76	18	457	457
3.1/2	101.6	89	20	508	508
4	114.3	102	22	559	559
5	141.3	127	24	610	610
6	168.3	152	–	–	–

Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer. *cte means Center to End dimensions. Dimensional Tolerances of Butt Weld Elbows Short Radius 90° ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8
Outside Diameterat Bevel (D)	+ 1.6– 0.8	1.6	1.6	+ 2.4– 1.6
Inside Diameter at End	0.8	1.6	1.6	1.6
cte (A)	2	2	2	2
Nominal Pipe Size	10 to 18	20 to 24	26 to 30	32 to 48
Outside Diameterat Bevel (D)	+ 4– 3.2	+ 6.4– 4.8	+ 6.4– 4.8	+ 6.4– 4.8
Inside Diameter at End	3.2	4.8	+ 6.4– 4.8	+ 6.4– 4.8
cte (A)	2	2	3	5
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Elbow 180deg. LR

Butt Weld Elbows 180° LR & SR ASME B16.9

NPS	O.D. D	180° LR		180° SR
NPS	O.D. D	Center to Center O	Back toFace K	Center to Center O	Back toFace K
1/2	21.3	76	48
3/4	26.7	76	51
1	33.4	76	56	51	41
1.1/4	42.2	95	70	64	52
1.1/2	48.3	114	83	76	62
2	60.3	152	106	102	81
2.1/2	73	190	132	127	100
3	88.9	229	159	152	121
3.1/2	101.6	267	184	178	140
4	114.3	305	210	203	159
5	141.3	381	262	254	197
6	168.3	457	313	305	237
8	219.1	610	414	406	313
10	273	762	518	508	391
12	323.8	914	619	610	467
14	355.6	1067	711	711	533
16	406.4	1219	813	813	610
18	457	1372	914	914	686
20	508	1524	1016	1016	762
22	559	1676	1118	1118	838
24	610	1829	1219	1219	914

Dimensions are in millimeters unless otherwise indicated.Wall thickness (t) must be specified by customer. Dimensional Tolerances of Butt Weld Elbows 180° LR & SR ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4
Outside Diameterat Bevel (D)	+ 1.6– 0.8	1.6	1.6
Inside Diameter at End	0.8	1.6	1.6
Center to Center (O)	6	6	6
Back to Face (K)	6	6	6
Nominal Pipe Size	5 to 8	10 to 18	20 to 24
Outside Diameterat Bevel (D)	+ 2.4– 1.6	+ 4– 3.2	+ 6.4– 4.8
Inside Diameter at End	1.6	3.2	4.8
Center to Center (O)	6	10	10
Back to Face (K)	6	6	6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Elbow 180deg. SR

Butt Weld Elbows 180° LR & SR ASME B16.9

NPS	O.D. D	180° LR		180° SR
NPS	O.D. D	Center to Center O	Back toFace K	Center to Center O	Back toFace K
1/2	21.3	76	48
3/4	26.7	76	51
1	33.4	76	56	51	41
1.1/4	42.2	95	70	64	52
1.1/2	48.3	114	83	76	62
2	60.3	152	106	102	81
2.1/2	73	190	132	127	100
3	88.9	229	159	152	121
3.1/2	101.6	267	184	178	140
4	114.3	305	210	203	159
5	141.3	381	262	254	197
6	168.3	457	313	305	237
8	219.1	610	414	406	313
10	273	762	518	508	391
12	323.8	914	619	610	467
14	355.6	1067	711	711	533
16	406.4	1219	813	813	610
18	457	1372	914	914	686
20	508	1524	1016	1016	762
22	559	1676	1118	1118	838
24	610	1829	1219	1219	914

Dimensions are in millimeters unless otherwise indicated.Wall thickness (t) must be specified by customer. Dimensional Tolerances of Butt Weld Elbows 180° LR & SR ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4
Outside Diameterat Bevel (D)	+ 1.6– 0.8	1.6	1.6
Inside Diameter at End	0.8	1.6	1.6
Center to Center (O)	6	6	6
Back to Face (K)	6	6	6
Nominal Pipe Size	5 to 8	10 to 18	20 to 24
Outside Diameterat Bevel (D)	+ 2.4– 1.6	+ 4– 3.2	+ 6.4– 4.8
Inside Diameter at End	1.6	3.2	4.8
Center to Center (O)	6	10	10
Back to Face (K)	6	6	6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Tee EQ

Dimensions Butt Weld Straight Tees ASME B16.9

NPS	O.D.D	Center to EndC	Center to EndM

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	216	216
12	323.8	254	254
14	355.6	279	279
16	406.4	305	305
18	457	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

Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer. Outlet dimension (M) for NPS 26 and larger is recommended but not required. Dimensional Tolerances Straight Tees ASME B16.9

Nominal Pipe Size	1/2to2.1/2	3to3.1/2	4	5to8	10to18	20to24	26to30	32to48
Outside Diaat Bevel (D)	+1.6-0.8	1.6	1.6	+2.4-1.6	+4-3.2	+6.4-4.8	+6.4-4.8	+6.4-4.8
Inside Dia at End	0.8	1.6	1.6	1.6	3.2	4.8	+6.4-4.8	+6.4-4.8
Center to End (C / M)	2	2	2	2	2	2	3	5
Wall Thk (t)	Not less than 87.5% of Nominal Wall Thickness

Tee Reducing

Dimensions Butt Weld

Straight Tees ASME B16.9

NPS	O.D.D	Center to EndC	Center to EndM
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	216	216
12	323.8	254	254
14	355.6	279	279
16	406.4	305	305
18	457	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

Nominal Pipe Size	1/2to2.1/2	3to3.1/2	4	5to8	10to18	20to24	26to30	32to48
Outside Diaat Bevel (D)	+1.6-0.8	1.6	1.6	+2.4-1.6	+4-3.2	+6.4-4.8	+6.4-4.8	+6.4-4.8
Inside Dia at End	0.8	1.6	1.6	1.6	3.2	4.8	+6.4-4.8	+6.4-4.8
Center to End (C / M)	2	2	2	2	2	2	3	5
Wall Thk (t)	Not less than 87.5% of Nominal Wall Thickness

Reducer Concentric

Butt Weld Reducers

Concentric and Eccentric ASME B16.9

NPS	O.D.D	O.D.D1	LengthH
3/4 – 1/2	26.7	21.3	38
1 – 1/2	33.4	21.3	51
1 – 3/4	33.4	26.7	51
1.1/4 – 1/2	42.2	21.3	51
1.1/4 – 3/4	42.2	26.7	51
1.1/4 – 1	42.2	33.4	51
1.1/2 – 1/2	48.3	21.3	64
1.1/2 – 3/4	48.3	26.7	64
1.1/2 – 1	48.3	33.4	64
1.1/2 – 1.1/4	48.3	42.2	64
2 – 3/4	60.3	26.7	76
2 – 1	60.3	33.4	76
2 – 1.1/4	60.3	42.2	76
2 – 1.1/2	60.3	48.3	76
2.1/2 – 1	73	33.4	89
2.1/2 – 1.1/4	73	42.2	89
2.1/2 – 1.1/2	73	48.3	89
2.1/2 – 2	73	60.3	89
3 – 1.1/4	88.9	42.2	89
3 – 1.1/2	88.9	48.3	89
3 – 2	88.9	60.3	89
3 – 2.1/2	88.9	73	89
3.1/2 – 1.1/4	101.6	42.2	102
3.1/2 – 1.1/2	101.6	48.3	102
3.1/2 – 2	101.6	60.3	102
3.1/2 – 2.1/2	101.6	73	102
3.1/2 – 3	101.6	88.9	102
4 – 1.1/2	114.3	48.3	102
4 – 2	114.3	60.3	102
4 – 2.1/2	114.3	73	102
4 – 3	114.3	88.9	102
4 – 3.1/2	114.3	101.6	102
5 – 2	141.3	60.3	127
5 – 2.1/2	141.3	73	127
5 – 3	141.3	88.9	127
5 – 3.1/2	141.3	101.6	127
5 – 4	141.3	114.3	127
6 – 2.1/2	168.3	73	140
6 – 3	168.3	88.9	140
6 – 3.1/2	168.3	101.6	140
6 – 4	168.3	114.3	140
6 – 5	168.3	141.3	140
8 – 3.1/2	219.1	101.6	152
8 – 4	219.1	114.3	152
8 – 5	219.1	141.3	152
8 – 6	219.1	168.3	152
10 – 4	273	114.3	178
10 – 5	273	141.3	178
10 – 6	273	168.3	178
10 – 8	273	219.1	178
12 – 5	323.9	141.3	203
12 – 6	323.9	168.3	203
12 – 8	323.9	219.1	203
12 – 10	323.9	273	203
14 – 6	355.6	168.3	330
14 – 8	355.6	219.1	330
14 – 10	355.6	273	330
14 – 12	355.6	323.9	330
16 – 8	406.4	219	356
16 – 10	406.4	273	356
16 – 12	406.4	323.9	356
16 – 14	406.4	355.6	356
18 – 10	457	273	381
18 – 12	457	323.9	381
18 – 14	457	355.6	381
18 – 16	457	406.4	381
20 – 12	508	323.9	508
20 – 14	508	355.6	508
20 – 16	508	406.4	508
20 – 18	508	457	508
22 – 14	559	355.6	508
22 – 16	559	406.4	508
22 – 18	559	457	508
22 – 20	559	508	508
24 – 16	610	406.4	508
24 – 18	610	457	508
24 – 20	610	508	508
24 – 22	610	559	508
26 – 18	660	457	610
26 – 20	660	508	610
26 – 22	660	559	610
26 – 24	660	610	610
28 – 18	711	457	610
28 – 20	711	508	610
28 – 24	711	610	610
28 – 26	711	660	610
30 – 20	762	508	610
30 – 24	762	610	610
30 – 26	762	660	610
30 – 28	762	711	610
32 – 24	813	610	610
32 – 26	813	660	610
32 – 28	813	711	610
32 – 30	813	762	610
34 – 24	864	610	610
34 – 26	864	660	610
34 – 30	864	762	610
34 – 32	864	813	610
36 – 24	914	610	610
36 – 26	914	660	610
36 – 30	914	762	610
36 – 32	914	813	610
36 – 34	914	864	610
38 – 26	965	660	610
38 – 28	965	711	610
38 – 30	965	762	610
38 – 32	965	813	610
38 – 34	965	864	610
38 – 36	965	914	610
40 – 30	1016	762	610
40 – 32	1016	813	610
40 – 34	1016	864	610
40 – 36	1016	914	610
40 – 38	1016	965	610

Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer. Dimensional Tolerances of Concentric and Eccentric Reducers ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8
Outside Diameter at Bevel (D)	+ 1.6– 0.8	1.6	1.6	+ 2.4– 1.6
Inside Diameter at End	0.8	1.6	1.6	1.6
Overall Length (H)	2	2	2	2
Nominal Pipe Size	10 to 18	20 to 24	26 to 30	32 to 48
Outside Diameter at Bevel (D)	+ 4– 3.2	+ 6.4– 4.8	+ 6.4– 4.8	+ 6.4– 4.8
Inside Diameter at End	3.2	4.8	+ 6.4– 4.8	+ 6.4– 4.8
Overall Length (H)	2	2	5	5
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Reducer Eccentric

Butt Weld Reducers

Concentric and Eccentric ASME B16.9

NPS	O.D.D	O.D.D1	LengthH
3/4 – 1/2	26.7	21.3	38
1 – 1/2	33.4	21.3	51
1 – 3/4	33.4	26.7	51
1.1/4 – 1/2	42.2	21.3	51
1.1/4 – 3/4	42.2	26.7	51
1.1/4 – 1	42.2	33.4	51
1.1/2 – 1/2	48.3	21.3	64
1.1/2 – 3/4	48.3	26.7	64
1.1/2 – 1	48.3	33.4	64
1.1/2 – 1.1/4	48.3	42.2	64
2 – 3/4	60.3	26.7	76
2 – 1	60.3	33.4	76
2 – 1.1/4	60.3	42.2	76
2 – 1.1/2	60.3	48.3	76
2.1/2 – 1	73	33.4	89
2.1/2 – 1.1/4	73	42.2	89
2.1/2 – 1.1/2	73	48.3	89
2.1/2 – 2	73	60.3	89
3 – 1.1/4	88.9	42.2	89
3 – 1.1/2	88.9	48.3	89
3 – 2	88.9	60.3	89
3 – 2.1/2	88.9	73	89
3.1/2 – 1.1/4	101.6	42.2	102
3.1/2 – 1.1/2	101.6	48.3	102
3.1/2 – 2	101.6	60.3	102
3.1/2 – 2.1/2	101.6	73	102
3.1/2 – 3	101.6	88.9	102
4 – 1.1/2	114.3	48.3	102
4 – 2	114.3	60.3	102
4 – 2.1/2	114.3	73	102
4 – 3	114.3	88.9	102
4 – 3.1/2	114.3	101.6	102
5 – 2	141.3	60.3	127
5 – 2.1/2	141.3	73	127
5 – 3	141.3	88.9	127
5 – 3.1/2	141.3	101.6	127
5 – 4	141.3	114.3	127
6 – 2.1/2	168.3	73	140
6 – 3	168.3	88.9	140
6 – 3.1/2	168.3	101.6	140
6 – 4	168.3	114.3	140
6 – 5	168.3	141.3	140
8 – 3.1/2	219.1	101.6	152
8 – 4	219.1	114.3	152
8 – 5	219.1	141.3	152
8 – 6	219.1	168.3	152
10 – 4	273	114.3	178
10 – 5	273	141.3	178
10 – 6	273	168.3	178
10 – 8	273	219.1	178
12 – 5	323.9	141.3	203
12 – 6	323.9	168.3	203
12 – 8	323.9	219.1	203
12 – 10	323.9	273	203
14 – 6	355.6	168.3	330
14 – 8	355.6	219.1	330
14 – 10	355.6	273	330
14 – 12	355.6	323.9	330
16 – 8	406.4	219	356
16 – 10	406.4	273	356
16 – 12	406.4	323.9	356
16 – 14	406.4	355.6	356
18 – 10	457	273	381
18 – 12	457	323.9	381
18 – 14	457	355.6	381
18 – 16	457	406.4	381
20 – 12	508	323.9	508
20 – 14	508	355.6	508
20 – 16	508	406.4	508
20 – 18	508	457	508
22 – 14	559	355.6	508
22 – 16	559	406.4	508
22 – 18	559	457	508
22 – 20	559	508	508
24 – 16	610	406.4	508
24 – 18	610	457	508
24 – 20	610	508	508
24 – 22	610	559	508
26 – 18	660	457	610
26 – 20	660	508	610
26 – 22	660	559	610
26 – 24	660	610	610
28 – 18	711	457	610
28 – 20	711	508	610
28 – 24	711	610	610
28 – 26	711	660	610
30 – 20	762	508	610
30 – 24	762	610	610
30 – 26	762	660	610
30 – 28	762	711	610
32 – 24	813	610	610
32 – 26	813	660	610
32 – 28	813	711	610
32 – 30	813	762	610
34 – 24	864	610	610
34 – 26	864	660	610
34 – 30	864	762	610
34 – 32	864	813	610
36 – 24	914	610	610
36 – 26	914	660	610
36 – 30	914	762	610
36 – 32	914	813	610
36 – 34	914	864	610
38 – 26	965	660	610
38 – 28	965	711	610
38 – 30	965	762	610
38 – 32	965	813	610
38 – 34	965	864	610
38 – 36	965	914	610
40 – 30	1016	762	610
40 – 32	1016	813	610
40 – 34	1016	864	610
40 – 36	1016	914	610
40 – 38	1016	965	610

Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer. Dimensional Tolerances of Concentric and Eccentric Reducers ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8
Outside Diameter at Bevel (D)	+ 1.6– 0.8	1.6	1.6	+ 2.4– 1.6
Inside Diameter at End	0.8	1.6	1.6	1.6
Overall Length (H)	2	2	2	2
Nominal Pipe Size	10 to 18	20 to 24	26 to 30	32 to 48
Outside Diameter at Bevel (D)	+ 4– 3.2	+ 6.4– 4.8	+ 6.4– 4.8	+ 6.4– 4.8
Inside Diameter at End	3.2	4.8	+ 6.4– 4.8	+ 6.4– 4.8
Overall Length (H)	2	2	5	5
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

End Cap

Dimensions Butt Weld Caps ASME B16.9

NPS	O.D. D	Length H	Length H(1)
1/2	21.3	25	25
3/4	26.7	25	25
1	33.4	38	38
1.1/4	42.2	38	38
1.1/2	48.3	38	38
2	60.3	38	44
2.1/2	73	38	51
3	88.9	51	64
3.1/2	101.6	64	76
4	114.3	64	76
5	141.3	76	89
6	168.3	89	102
8	219.1	102	127
10	273	127	152
12	323.8	152	178
14	355.6	165	191
16	406.4	178	203
18	457	203	229
20	508	229	254
22	559	254	254
24	610	267	305
26	660	267	–
28	711	267	–
30	762	267	–
32	813	267	–
34	864	237	–
36	914	267	–
38	965	305	–
40	1016	305	–
42	1067	305	–
44	1118	343	–
46	1168	343	–
48	1219	343	–

General notes..

Dimensions are in millimeters unless otherwise indicated.
Wall thickness (t) must be specified by customer.
The shape shall be ellipsoidal and shall conform to the requirements given in the ASME Boiler and Pressure Vessel Code.
Length (H) applies for thickness not exceeding that given in column “Wall Thickness” for Length, H.
Length (H1) applies for thickness greater than that given in column “Wall Thickness” for NPS 24 and smaller. For NPS 26 and larger, length H1 shall be by agreement between the manufacturerand purchaser.

Dimensional Tolerances of End Caps ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8
Outside Diameterat Bevel (D)	+ 1.6– 0.8	1.6	1.6	+ 2.4– 1.6
Inside Diameter at End	0.8	1.6	1.6	1.6
Overall Length (H)	3	3	3	6
Nominal Pipe Size	10 to 18	20 to 24	26 to 30	32 to 48
Outside Diameterat Bevel (D)	+ 4– 3.2	+ 6.4– 4.8	+ 6.4– 4.8	+ 6.4– 4.8
Inside Diameter at End	3.2	4.8	+ 6.4– 4.8	+ 6.4– 4.8
Overall Length (H)	6	6	10	10
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Weights of Buttweld Caps

NPS	STD	XS	SCH 160	XXS
1	0.09	0.14	0.18	0.23
1.1/4	0.14	0.18	0.23	0.34
1.1/2	0.18	0.23	0.27	0.41
2	0.27	0.34	0.57	0.68
2.1/2	0.41	0.45	0.79	1.13
3	0.68	0.79	1.32	1.81
3.1/2	0.91	1.13	–	2.72
4	1.13	1.36	2.68	3.4
5	2.04	2.49	4.54	5.44
6	2.95	4.08	6.8	8.16
8	5.44	7.26	14.06	13.61
10	9.07	11.34	25.85	–
12	13.61	16.33	43.09	–
14	16.33	20.41	–	–
16	18.14	24.49	–	–
18	24.49	32.66	–	–
20	34.02	39.01	–	–
22	42.64	56.7	–	–
24	43.54	58.97	–	–
26	53.98	72.12	–	–
30	78.02	103.87	–	–

All weights are in kilograms and approximated or estimated.

Buttweld Fitting Weights

ASME buttweld fitting specifications do not specify weights for fittings. Weights quoted in the table on this page are based on manufacturers information and should be considered as approximate and provided as a guide only (fitting weights can vary considerably between manufacturers due to differences in construction). Weights in these tables are taken from Hackney Ladish, Inc. Hackney Ladish, Inc. is one of the largest and most versatile fitting producers in the world. Hackney Ladish, Inc. is headquartered in Dallas, TX and operates 2 facilities containing 380,000 square feet of manufacturing.

Stub End ASME B16.9

Dimensions Lap Joint Stub Ends schedule STD XS ASME B16.9

Schedule STD

NPS	OD	T	G	F	R	kg
1/2	21.3	2.77	34.9	76.2	3.18	0.16
3/4	26.7	2.87	42.9	76.2	3.18	0.23
1	33.4	3.38	50.8	101.6	3.18	0.29
1.1/4	42.2	3.56	63.5	101.6	4.76	0.45
1.1/2	48.3	3.68	73	101.6	6.35	0.54
2	60.3	3.91	92.1	152.4	7.94	1
2.1/2	73	5.16	104.8	152.4	7.94	1.5
3	88.9	5.49	127	152.4	9.53	2.1
3.1/2	101.6	5.74	139.7	152.4	9.53	2.5
4	114.3	6.02	157.2	152.4	11.11	3
5	141.3	6.55	185.7	203.2	11.11	5.4
6	168.3	7.11	215.9	203.2	12.70	7.3
8	219.1	8.18	269.9	203.2	12.70	11.6
10	273.1	9.27	323.9	254	12.70	18
12	323.9	9.53	381	254	12.70	21
14	355.6	9.53	412.8	304.8	12.70	28
16	406.4	9.53	469.9	304.8	12.70	34
18	457.2	9.53	533.4	304.8	12.70	39
20	508	9.53	584.2	304.8	12.70	44
24	609.6	9.53	692.2	304.8	12.70	57

Dimensions are in millimeters unless otherwise indicated. Weights are in kilograms and approximately given. Schedule XS

NPS	OD	T	G	F	R	kg
1/2	21.3	3.73	34.9	76.2	3.18	0.2
3/4	26.7	3.91	42.9	76.2	3.18	0.3
1	33.4	4.55	50.8	101.6	3.18	0.4
1.1/4	42.2	4.85	63.5	101.6	4.76	0.6
1.1/2	48.3	5.08	73	101.6	6.35	0.7
2	60.3	5.54	92.1	152.4	7.94	1.4
2.1/2	73	7.01	104.8	152.4	7.94	2
3	88.9	7.62	127	152.4	9.53	2.9
3.1/2	101.6	8.08	139.7	152.4	9.53	3.4
4	114.3	8.56	157.2	152.4	11.11	4.1
5	141.3	9.53	185.7	203.2	11.11	7.5
6	168.3	10.97	215.9	203.2	12.70	10
8	219.1	12.70	269.9	203.2	12.70	16
10	273.1	12.70	323.9	254	12.70	24
12	323.9	12.70	381	254	12.70	29
14	355.6	12.70	412.8	304.8	12.70	38
16	406.4	12.70	469.9	304.8	12.70	43
18	457.2	12.70	533.4	304.8	12.70	49
20	508	12.70	584.2	304.8	12.70	63
24	609.6	12.70	692.2	304.8	12.70	76

Dimensions are in millimeters unless otherwise indicated. Weights are in kilograms and approximately given.

Dimensional Tolerances of Stub Ends ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8	10 to 18	20 to 24
Outside Diameter at Welding End (OD)	+1.6–0.8	1.6	1.6	+2.29–1.6	+4.06–3.05	+6.35–4.83
Overall Length (F)	1.6	1.6	1.6	1.6	2	2
Outside Diameter of Lap (G)	+0–0.76	+0–0.76	+0–0.76	+0–0.76	+0–1.6	+0–1.6
Thickness of Lap (T)	+1.52–0	+1.52–0	+1.52–0	+1.52–0	+1.52–0	+1.52–0
Fillet Radius of Lap (R)	+0–0.76	+0–0.76	+0–1.6	+0–1.6	+0–1.6	+0–1.6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated.

Stub End MSS SP43

Dimensions butt welded Stub Ends

schedule 10S MSS SP-43 type A/B

NPS	OD	T	G	F	R Type A	R Type B
1/2	21.3	2.11	34.9	50.8	3.05	0.76
3/4	26.7	2.11	42.9	50.8	3.05	0.76
1	33.4	2.77	50.8	50.8	3.05	0.76
1.1/4	42.2	2.77	63.5	50.8	4.83	0.76
1.1/2	48.3	2.77	73	50.8	6.35	0.76
2	60.3	2.77	92.1	63.5	7.87	0.76
2.1/2	73	3.05	104.8	63.5	7.87	0.76
3	88.9	3.05	127	63.5	9.65	0.76
3.1/2	101.6	3.05	139.7	76.2	9.65	0.76
4	114.3	3.05	157.2	76.2	11.18	0.76
5	141.3	3.40	185.7	76.2	11.18	1.52
6	168.3	3.40	215.9	88.9	12.7	1.52
8	219.1	3.76	269.9	101.6	12.7	1.52
10	273.1	4.19	323.9	127	12.7	1.52
12	323.9	4.57	381	152.4	12.7	1.52
14	355.6	4.78	412.8	152.4	12.70	1.52
16	406.4	4.78	469.9	152.4	12.7	1.52
18	457.2	4.78	533.4	152.4	12.70	1.52
20	508	5.54	584.2	152.4	12.70	1.52
24	609.6	6.35	692.2	152.4	12.7	1.52

Dimensions are in millimeters unless otherwise indicated. Weights are in kilograms and approximately given. Dimensional Tolerances Stub Ends MSS SP-43

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8	10 to 18	20 to 24
Outside Diameter at Welding End (OD)	0.8	0.8	0.8	+1.6–0.8	+2.29–0.76	+3.05–0.76
Overall Length (F)	1.6	1.6	1.6	1.6	2	2
Outside Diameter of Lap (G)	+0–0.76	+0–0.76	+0–0.76	+0–0.76	+0–1.6	+0–1.6
Thickness of Lap (T)	+1.52–0	+1.52–0	+1.52–0	+1.52–0	+1.52–0	+1.52–0
Fillet Radius of Lap (R)	+0–0.76	+0–0.76	+0–1.6	+0–1.6	+0–1.6	+0–1.6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated. Notes..

Type A for Lap Joint Flanges
Type B for Slip On Flanges
MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 – NPS 24. Except with regard to the outside diameter at the bevel.