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Weldolet Dimensions Charts (MSS-SP 97)

Author: Projectmaterials
Posted: September 20, 2017
3 Comments

Weldolet dimensions and weights (“center of the run to Weldolet face”, “size-on-size” and “reducing” Weldolets sizes by NPS and schedule, and “run sizes combinations”).

WELDOLET DIMENSIONS

“Center of Run to Face” Size

The distance between the run pipe center line and the Weldolet top-bore in mm (by pipe NPS/Schedule and Weldolet size):

RUN PIPE NPS	RUN PIPE SCHEDULE	WELDOLET DIMENSIONS
SIZE	SCH.	2″	3″	4″	6″	8″	10″	12″	14″	16″	18″	20″	24″
2″	STD-40 XS-80	70
	XXS-160	87
3″	STD-40 XS-80	84	91
	XXS-160	101	119
4″	STD-40 XS-80	97	103	111
	XXS-160	114	132	144
	STD-40	124	130	138	148
6″	XS-80	124	130	138	165
	XXS-160	141	159	171	192
	STD-40	149	156	164	176	183
8″	XS-80	149	156	164	191	197
	XXS-160	167	184	197	218	224
	STD-40	176	183	191	205	210	218
10″	XS-80	176	183	191	218	238	235
	XXS-160	194	211	224	245	251	265
	STD	202	208	216	228	255	245	251
12″	XS	202	208	216	243	264	267	265
	XXS-160	219	237	249	270	276	291	324
14″	STD	218	224	232	245	251	259	267	270
	XS	218	224	231	239	279	270	278	286
16″	STD	243	249	257	270	276	284	292	295	300
	XS	243	249	257	284	305	293	303	306	319
18″	STD	268	275	283	295	302	310	318	321	325	335
	XS	268	275	283	310	330	321	329	332	338	352
20″	STD	294	300	308	321	327	335	343	346	351	356	376
	XS	294	300	308	335	356	346	354	557	364	370	386
24″	STD	345	351	359	372	378	386	394	397	402	406	411	446
	XS	345	351	359	386	406	397	405	408	414	421	429	449

Size on Size Weldolet Schedule 40

Sizes in inches, weights in pounds

Weldolet Size (inches)	A	B	C	D	Weldolet weight in lbs
1/2	3/4	1 3/8	15/16	5/8	0.15
3/4	7/8	1 5/8	1 3/16	13/16	0.25
1	1 1/16	2	1 7/16	1 1/32	0.4
1 1/4	1 1/4	2 3/8	1 3/4	1 3/8	0.7
1 1/2	1 5/16	2 7/8	2	1 5/8	0.8
2	1 1/2	3 1/2	2 9/16	2 1/16	1.5
2 1/2	1 5/8	4 1/6	3	2 7/16	2.25
3	1 3/4	4 13/16	3 11/16	3 1/16	3.75
3 1/2	2	5 3/8	3 7/8	3 9/16	5
4	2	6	4 3/4	4	6.7
5	2 1/4	7 1/8	5 9/16	5 1/16	8.5
6	2 3/8	8 1/2	6 11/16	6 1/16	14
8	2 3/4	10 3/8	8 11/16	7 15/16	28
10	3 1/16	12 9/16	10 13/16	10	39
12	3 3/8	14 7/8	12 13/16	12	65
14	3 1/2	16 1/8	14 1/16	13 1/4	70
16	3 11/16	18 1/4	16 1/16	15 1/4	92
18	4 1/16	20 3/4	18 5/8	17 1/4	125
20	4 5/8	23 1/16	20 1/16	19 1/4	175
24	5 3/8	27 7/8	25 1/8	23 1/4	280
30	5 3/8	34 1/16	30 7/16	29 1/4	440
36	5 3/8	34 1/16	36 1/2	35 1/4	1180

Size on Size Weldolet Schedule XS

Sizes in inches, weights in pounds

Weldolet Size (inches)	A	B	C	D	Weldolet weight in lbs
1/2	3/4	1.375	15/16	5/8	0.15
3/4	7/8	1.625	1.1875	13/16	0.25
1	1.0625	2	1.4375	1.03125	0.4
1 1/14	1.25	2.4375	1.75	1.375	0.7
1.5	1.3125	2.875	2	1.625	0.9
2	1.5	3.5	2.5625	2.0625	1.6
2 1/2	1.625	4.0625	3	2.4375	2.5
3	1.75	4.8125	3.6875	3.0625	4.1
3 1/2	2	5.375	3.875	3.5625	5.1
4	2	6	4.75	4	7.5
5	2.25	7.125	5.5625	5.0625	9.5
6	3.0625	8.875	6.6875	6.0625	15
8	3.875	10.625	8.6875	7.625	32
10	3.5	12.875	10.4375	9.75	46
12	3.9375	15.1875	13	11.75	61
14	4.125	16.6875	14.3125	13	75
16	4.4375	18.875	16.5	15	115
18	4.6875	21.125	18.625	17	130
20	5	23.375	20.8125	19	187
24	5.5	27.875	25.125	23	316
26	5.75	30.125	27.25	25	370

Size on Size Weldolet Schedule 160/XXS

Sizes in inches, weights in pounds

Weldolet Size (inches)	A	B	C	Weldolet weight in lbs
1/2	1 1/8	1 3/8	9/16	0.25
3/4	1 1/4	1 3/4	3/4	0.70
1	1 1/2	2	1	0.80
1 1/4	1 3/4	2 7/16	1 5/16	1.25
1 1/2	2	2 3/4	1 1/2	1.75
2	2 3/16	3 3/16	1 11/16	2.15
2 1/2	2 7/16	3 13/16	2 1/8	3.40
3	2 7/8	4 3/4	2 7/8	6.35
4	3 5/16	6	3 7/8	10.50
5	3 11/16	7 3/8	4 13/16	14.25
6	4 1/8	8 11/16	5 3/4	30.25

Reducing Weldolet Schedule 40

Sizes in inches, weights in pounds

Weldolet Size (inches)	A	B	C	Weldolet weight in lbs
1/8	5/8	1	5/8	0.10
1/4	5/8	1	5/8	0.10
3/8	3/4	1 1/4	3/4	0.15
1/2	3/4	1 3/8	15/16	0.20
3/4	7/8	1 3/4	1 3/16	0.25
1	1 1/16	2 1/8	1 7/16	0.50
1 1/4	1 1/4	2 9/16	1 3/4	0.80
1 1/2	1 5/16	2 7/8	2	1.00
2	1 1/2	3 1/2	2 9/16	1.75
2 1/2	1 5/8	4 1/16	3	2.50
3	1 3/4	4 13/16	3 11/16	4.00
3 1/2	1 7/8	5 1/4	4	5.50
4	2	6	4 3/4	6.30
5	2 1/4	7 1/16	5 9/16	10.25
6	2 3/8	8 3/16	6 11/16	12.00
8	2 3/4	10 1/4	8 11/16	23.00
10	3 1/16	12 11/16	10 13/16	36.00
12	3 3/8	14 7/8	12 13/16	59.00
14	3 1/2	16 9/16	14 1/16	66.00
16	3 11/16	18 1/4	16 1/16	75.00
18	3 13/16	21 1/16	18 1/16	97.00
20	4	23 3/16	20	118.00
24	4 9/16	27 3/4	24 3/16	220.00
26	4 11/16	29 7/8	26 1/4	265.00
30	5 3/8	34 1/2	30 7/16	430.00
36	5 3/8	40 1/2	36 1/2	900.00

Reducing Weldolet Schedule XS

Sizes in inches, weights in pounds

Weldolet Size (inches)	A	B	C	Weldolet weight in lbs
1/8	5/8	1	5/8	0.10
1/4	5/8	1	5/8	0.10
3/8	3/4	1 1/4	3/4	0.15
1/2	3/4	1 3/8	15/16	0.20
3/4	7/8	1 3/4	1 3/16	0.30
1	1 1/16	2 1/8	1 7/16	0.50
1 1/4	1 1/4	2 9/16	1 3/4	0.90
1 1/2	1 5/16	2 7/8	2	1.10
2	1 1/2	3 1/2	2 9/16	1.75
2 1/2	1 5/8	4 1/16	3	2.60
3	1 3/4	4 13/16	3 11/16	4.10
3 1/2	1 7/8	5 1/4	4	5.60
4	2	6	4 3/4	6.40
5	2 1/4	7 1/16	5 9/16	10.40
6	3 1/16	8 5/16	6 11/16	23.00
8	3 7/8	11 1/2	8 11/16	37.00
10	3 11/16	13 3/16	10 7/16	46.00
12	4 1/16	15 5/8	12 1/2	61.00
14	3 15/16	16	13 13/16	70.00
16	4 3/16	18 3/8	15 7/8	102.00
18	4 3/8	20 3/8	17 15/16	130.00
20	4 11/16	22 15/16	20 1/16	158.00
24	5 1/2	28 1/2	24 3/16	290.00
26	5 3/4	30 1/8	27 1/4	350.00

Reducing Weldolet Schedule 160/XXS

Sizes in inches, weights in pounds

Weldolet Size (inches)	A	B	C	Weldolet weight in lbs
1/2	1 1/8	1 3/8	9/16	0.25
3/4	1 1/4	1 3/4	3/4	0.70
1	1 1/2	2	1	0.85
1 1/4	1 3/4	2 7/16	1 5/16	1.25
1 1/2	2	2 3/4	1 1/2	1.75
2	2 3/16	3 3/16	1 11/16	2.15
2 1/2	2 7/16	3 13/16	2 1/8	3.40
3	2 7/8	4 3/4	2 7/8	6.30
4	3 5/16	6	3 7/8	10.50
5	3 11/16	7 3/8	4 13/16	14.25
6	4 1/8	9 5/16	5 3/4	28.00

HEAVY WALL THICKNESS WELDOLET DIMENSIONS

Run WT	3/4		1		1 1/4		1 1/2		1 3/4		2		2 1/4		2 3/4		3
Run Size	A	C	A	C	A	C	A	C	A	C	A	C	A	C	A	C	A	C
3	2 7/8	2.906	3 7/32	2.900	3 3/8	2.906	3 5/8	2.900	4 1/8	2.900	4 9/16	2.900	5	2.900	5 7/8	2.900	6 1/16	2.900
3 1/2	3 1/8	3.359	3 1/4	3.359	3 7/16	3 359	3 3/4	3.359	4 3/16	3.359	4 5/8	3.359	5 1/16	3.359	6	3.359	6 5/16	3.359
4	3 5/16	3.843	3 3/8	3.826	3 1/2	3.828	3 7/8	3.826	4 3/4	3.826	4 3/4	3.826	5 3/16	3.826	6 1/8	3.826	6 9/16	3.826
5	3 3/4	4.812	3 3/4	4.812	4	4.812	4 1/4	4.812	4 3/4	4.812	5 1/4	4.812	5 3/4	4.812	6 5/8	4.812	7 3/16	4.812
6	4 1/8	5.750	4 11/32	5.761	4 1/2	5.760	4 11/16	5.760	5 1/4	5.760	5 3/4	5.760	6 1/4	5.760	7 1/4	5.760	7 13/16	5.760
8	4 3/16	7.625	4 5/8	7.625	4 7/8	7.625	5 5/32	7.625	5 3/4	7.625	6 11/32	7.625	6 15/16	7.625	8 3/32	7.625	8 11/16	7.625
10	4 1/4	9.750	4 27/32	9.750	5	9.562	5 5/16	9.562	5 15/16	9.562	6 9/16	9.562	7 3/16	9.562	8 7/16	9.562	9 1/16	9.562
12	4 3/8	11.750	5 3/32	11.750	5 3/8	11.375	5 11/16	11.375	6 5/16	11.375	6 15/16	11.375	7 9/16	11.375	8 13/16	11.375	9 7/16	11.375
14	4 1/2	13	5 1/4	13	5 1/2	12.500	5 13/16	12.500	6 5/16	12.500	6 15/16	12.500	7 9/16	12.500	8 13/16	12.500	9 7/16	12.500
16	4 11/16	15	5 7/8	15	6	14.312	6 7/16	14.310	6 5/8	14.310	7 1/4	14.310	7 7/8	14.310	9 1/8	14.310	9 3/4	14.310
18	5 1/8	17	6 1/2	17	6 1/2	16.125	6 1/2	16.126	6 13/16	16.126	7 7/16	16.126	8 7/32	16.126	9 13/32	16.126	10 1/32	16.126
20	5 5/8	19	6 3/4	19	7	17.937	7 9/16	17.938	7 25/32	17.938	8 3/32	17.938	8 21/32	17.938	9 29/32	17.938	10 15/32	17.938
24	6 1/2	23	7 5/8	23	8	21.564	8 23/32	21.564	8 31/32	21.564	9 13/16	21.568	10 1/2	21.568	12 9/16	21.564	10 21/32	21.564

WELDOLET RUN SIZES COMBINATIONS

Weldolet Size Sch. STD/XS

Pipe Run Sizes	Branch Pipe Size (inches)
	1/8	1/4	3/8	1/2	3/4	1	1 1/4	1 1/2	2	2 1/2	3	3 1/2	4	5	6
	3/8	3/8	1/2	1/2	3/4	1	1 1/4	1 1/2	2	2 1/2	3	3 1/2	4	5	6
	1/2	1/2	1-3/4	3/4	1	1 1/4	1 1/2	2	2 1/2	3	3 1/2	4	5	6	8
	1-3/4	1-3/4	21/2-11/4	1	1 1/2 – 1 1/4	1 1/2	2	2 1/2	3	3 1/2	4	5	6	8	10
	2 1/2 – 1 1/4	21/2-11/4	36-3	1 1/2 – 1 1/4	2 1/2 – 2	2	2 1/2	3	4 – 3 1/2	4	5	6	8	10	14-12
	36-3	36-3	flat	2 1/2 – 2	5-3	2 1/2	3 1/2 – 3	4 – 3 1/2	5	5	6	8	10	12	16
	flat	flat		8-3	12-6	3 1/2 – 3	5-4	6-5	6	6	8	10	14-12	14	18
				36-10	36-14	5 – 4	8-6	12-8	10-8	8	10	14-12	20-16	18-16	22-20
				flat	flat	10 – 6	18-10	24-14	18-12	12-10	14-12	20-16	22	22-20	28-24
			3/4 – 1/2			36 – 12	36-20	36-26	36-20	18-14	20-16	36-24	36-24	28-24	36-30
			36 – 1			flat	flat	flat	flat	36-20	36-24	flat	flat	36-30	flat
			flat							flat	flat			flat
	Outlet sizes 8, 10, 12, 14, 16. 18, 24, 26. 20 order to specific size combination.							Size consolidation for Weldolets only

Weldolet Size Sch. XXS/160

Pipe Run Sizes	Branch Pipe Size (inches)
	1/2	3/4	1	1 1/4	1 1/2	2	2 1/2	3	4
	1/2	1 3/4	1	1 1/2 – 1 1/4	1 1/2	2	2 1/2	3	4
	1 1/4 – 3/4	2 – 1 1/4	2 1/2 -1 1/4	2 1/2 -2	2 1/2 – 2	2 1/2	3	3 1/2	6
	36 – 1 1/2	6 – 2 1/2	10-3	10-3	3 1/2 -3	3 1/2 -3	3 1/2	4	8
	flat	36-8	36-12	36-12	8-4	5-4	4	5	10
		flat	flat	flat	20-10	8-6	5	6	12
					22	18-10	8-6	8	14
					36-24	36-20	12-10	10	16
					flat	flat	18-14	12	18
							36-20	14	20
							flat	16	22
								18	24
								20
								22
								24
								flat

(Source: Bonney Forge)

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3 Responses

Mir Arifuddin Ahmed says:
May 3, 2019 at 8:10 am
I need weldolet and sockolet for size 1650mm
Reply
MaRICHI says:
July 2, 2019 at 7:26 pm
Dear Sir,
kindly quote your best price for the following below items.
S/N
Description
Unit
Unit
Ord. QTY
1
32″ X 1″ WELDOLET REDUCING SIZE, ASME B16.25, Sch. 160, WT 6.35 mm
(Material grade :ASTM A860 WPHY 52)
Nos.
10
2
32″ X 2″ WELDOLET REDUCING SIZE, ASME B16.25, Sch. 160, WT. 8.7 mm
(Material grade :ASTM A860 WPHY 52)
Nos.
10
3
32″ X 4″ WELDOLET REDUCING SIZE, ASME B16.25, Sch. 160, WT. 13.5 mm
(Material grade :ASTM A860 WPHY 52).
Nos.
12
4
WN FLANGE 1″, RTJ, #1500 ASME B16.5, WT. 6.35 mm
(Material Grade: ISO 5590-3 450-LS)
Nos.
10
5
WN FLANGE 2″, RTJ, #1500 ASME B16.5, WT. 8.7 mm
(Material Grade: ISO 5590-3 450-LS)
Nos.
10
6
WN FLANGE 4″, RTJ, #1500 ASME B16.5, WT. 13.5 mm
(Material Grade: ISO 5590-3 450-LS)
Nos.
12
7
WN FLANGE 32″, RTJ, # 1500 ASME B16.5, WT. 26.3 mm
(Material Grade: ISO 5590-3 450-LS)
Nos.
1
8
BLIND FLANGE 1″, RTJ, #1500 ASME B16.5
(Material Grade: ISO 5590-3 450-LS)
Nos.
10
9
BLIND FLANGE 2″, RTJ, #1500 ASME B16.5
(Material Grade: ISO 5590-3 450-LS)
Nos.
10
10
BLIND FLANGE 4″, RTJ, #1500 ASME B16.5
(Material Grade: ISO 5590-3 450-LS)
Nos.
12
19
1″ FLANGE BALL VALVE, RTJ, # 1500 FULL BORE ASME B16.10
(Material Grade : ASTM A350 )
Nos.
8
20
2″ FLANGE BALL VALVE, RTJ, # 1500 FULL BORE ASME B16.10
(Material Grade : ASTM A350 )
Nos.
8
21
4″ FLANGE BALL VALVE, RTJ # 1500 FULL BORE ASME B16.10
(Material Grade : ASTM A350 )
Nos.
6
Reply
Mahmud Ahmad says:
September 17, 2020 at 1:57 am
My Header/Run Pipe 52″ piggable, we would like insert 24″ weldolet, is possible to add custom bar to avoid pig stuck during pigging operation
Reply

Weldolet Dimensions Charts (MSS-SP 97)

Table of Contents

WELDOLET DIMENSIONS

“Center of Run to Face” Size

Size on Size Weldolet Schedule 40

Size on Size Weldolet Schedule XS

Size on Size Weldolet Schedule 160/XXS

Reducing Weldolet Schedule 40

Reducing Weldolet Schedule XS

Reducing Weldolet Schedule 160/XXS

HEAVY WALL THICKNESS WELDOLET DIMENSIONS

WELDOLET RUN SIZES COMBINATIONS

Weldolet Size Sch. STD/XS

Weldolet Size Sch. XXS/160

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