ASTM A403 Size on Size/Reducing Weldolet Stainless Steel Pipe Fittings

Brand Name:Kasugai
Model Number:ASTM A403 MSS SP-97 Weldolet
Minimum Order Quantity:Negotiable
Delivery Time:30 - 60 working days
Payment Terms:L / C , T / T
Place of Origin:China
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ASTM A403 Size on Size/Reducing Weldolet Stainless Steel Pipe Fittings

Weldolet are the most common type of branch fitting and are part of the butt welding fixings family and are available in a wide variety of dimensions.


ASTM A403 and MSS SP-97 are two separate standards that are often referenced together when discussing Weldolets. Let's break it down:

ASTM A403:
ASTM A403 is a standard specification for wrought austenitic stainless steel pipe fittings. It covers various types of fittings, including butt-welded, socket-welded, and threaded fittings. This specification defines the requirements for materials, dimensions, mechanical properties, and testing of stainless steel pipe fittings.

A weldolet is a branch butt-weld connection fitting that is attached to an output pipe in order to reduce stress concentrations in the piping region. The most frequent type of branch fitting is the weldolet. They’re a type of butt welding fitting that comes in a number of sizes. They are used as an alternative to fittings such as elbows or tees, which can be more complex to install and may require additional support.


Product Information

Product NameASTM A403 MSS SP-97 Weldolet
Size RangeDimension: 1/8” to 36”
Wall ThicknessSTD Sch40 Sch160 XS XXS
StandardsASTM A403
GradeWP304/L WP316/L WP310S WP321
Manufacturing StandardsASME B16.11 Weldolets, MSS SP-97

MSS SP-97 Weldolet Dimensions

“Center of Run to Face” Size


Run Pipe NPSRun Pipe ScheduleWeldolet Dimensions
SizeSCH.2″3″4″6″8″10″12″14″16″18″20″24″
2″STD-40
XS-80
70
XXS-16087
3″STD-40
XS-80
8491
XXS-160101119
4″STD-40
XS-80
97103111
XXS-160114132144
STD-40124130138148
6″XS-80124130138165
XXS-160141159171192
STD-40149156164176183
8″XS-80149156164191197
XXS-160167184197218224
STD-40176183191205210218
10″XS-80176183191218238235
XXS-160194211224245251265
STD202208216228255245251
12″XS202208216243264267265
XXS-160219237249270276291324
14″STD218224232245251259267270
XS218224231239279270278286
16″STD243249257270276284292295300
XS243249257284305293303306319
18″STD268275283295302310318321325335
XS268275283310330321329332338352
20″STD294300308321327335343346351356376
XS294300308335356346354557364370386
24″STD345351359372378386394397402406411446
XS345351359386406397405408414421429449

Size on Size Weldoet Dimensions and Weight



Sch 40 (sizes in inches, weights in pounds)


Weldolet Size (inch)ABC

Weldolet weight

(lbs)

1/23/41 3/815/160.15
3/47/81 5/81 3/160.25
11 1/1621 7/160.4
1 1/41 1/42 3/81 3/40.7
1 1/21 5/162 7/820.8
21 1/23 1/22 9/161.5
2 1/21 5/84 1/632.25
31 3/44 13/163 11/163.75
3 1/225 3/83 7/85
4264 3/46.7
52 1/47 1/85 9/168.5
62 3/88 1/26 11/1614
82 3/410 3/88 11/1628
103 1/1612 9/1610 13/1639
123 3/814 7/812 13/1665
143 1/216 1/814 1/1670
163 11/1618 1/416 1/1692
184 1/1620 3/418 5/8125
204 5/823 1/1620 1/16175
245 3/827 7/825 1/8280
305 3/834 1/1630 7/16440
365 3/834 1/1636 1/21180

Sch XS (sizes in inches, weights in pounds)

Weldolet Size (inch)ABC

Weldolet weight

(lbs)

1/23/41.37515/160.15
3/47/81.6251.18750.25
11.062521.43750.4
1 1/141.252.43751.750.7
1.51.31252.87520.9
21.53.52.56251.6
2 1/21.6254.062532.5
31.754.81253.68754.1
3 1/225.3753.8755.1
4264.757.5
52.257.1255.56259.5
63.06258.8756.687515
83.87510.6258.687532
103.512.87510.437546
123.937515.18751361
144.12516.687514.312575
164.437518.87516.5115
184.687521.12518.625130
20523.37520.8125187
245.527.87525.125316
265.7530.12527.25370

Sch 160/XXS (Sizes in inches, weights in pounds)

Weldolet Size (inch)ABC

Weldolet weight

(lbs)

1/21 1/81 3/89/160.25
3/41 1/41 3/43/40.70
11 1/2210.80
1 1/41 3/42 7/161 5/161.25
1 1/222 3/41 1/21.75
22 3/163 3/161 11/162.15
2 1/22 7/163 13/162 1/83.40
32 7/84 3/42 7/86.35
43 5/1663 7/810.50
53 11/167 3/84 13/1614.25
64 1/88 11/165 3/430.25

Reducing Weldolet Dimensions

Sch XS (Sizes in inches, weights in pounds)

Weldolet Size (inch)ABC

Weldolet weight

(lbs)

1/85/815/80.10
1/45/815/80.10
3/83/41 1/43/40.15
1/23/41 3/815/160.20
3/47/81 3/41 3/160.30
11 1/162 1/81 7/160.50
1 1/41 1/42 9/161 3/40.90
1 1/21 5/162 7/821.10
21 1/23 1/22 9/161.75
2 1/21 5/84 1/1632.60
31 3/44 13/163 11/164.10
3 1/21 7/85 1/445.60
4264 3/46.40
52 1/47 1/165 9/1610.40
63 1/168 5/166 11/1623.00
83 7/811 1/28 11/1637.00
103 11/1613 3/1610 7/1646.00
124 1/1615 5/812 1/261.00
143 15/161613 13/1670.00
164 3/1618 3/815 7/8102.00
184 3/820 3/817 15/16130.00
204 11/1622 15/1620 1/16158.00
245 1/228 1/224 3/16290.00
265 3/430 1/827 1/4350.00

Sch160/XXS (Sizes in inches, weights in pounds)

Weldolet Size (inches)ABCWeldolet weight in lbs
1/21 1/81 3/89/160.25
3/41 1/41 3/43/40.70
11 1/2210.85
1 1/41 3/42 7/161 5/161.25
1 1/222 3/41 1/21.75
22 3/163 3/161 11/162.15
2 1/22 7/163 13/162 1/83.40
32 7/84 3/42 7/86.30
43 5/1663 7/810.50
53 11/167 3/84 13/1614.25
64 1/89 5/165 3/428.00

Materials Chemical Compositions

ASTM A403 Stainless Steel Pipe Fittings refers to the material of forged and rolled austenitic stainless fittings for pressure pipes. Common grades are WP304/L, WP316/L. They can be used into many fields as engineering industry, energy conversion plants etc.


Grade AComposition (%)
Grade WPUNS DesignationCMnPSSiNiCrMoTi
WP304S304000.082.000.0450.0301.008.0-11.018.0-22.0
WP304LS304030.030E2.000.0450.0301.008.0-12.018.0-22.0
WP310SS310080.082.000.0450.0301.0019.0-22.024.0-26.0
WP316S316000.082.000.0450.0301.0010.0-14.016.0-18.02.00-3.00
WP316LS316030.030E2.000.0450.0301.0010.0-14.016.0-18.02.00-3.00
Wp321S321000.082.000.0450.0301.009.0-12.017.0-19.0G

Note:

Where a ellipsis(﹍)appears in the table, there is no requirement and the element need to be analyzed for or reported

The method of analysis for nitrogen shall be a matter of agreement between the purchaser and manufacturer

Columbium 0.10-0.30%; Vanadium 0.10-0.30%.

For small diameter or thin walls, or both, where many drawing passes are required, a carbon maximum of 0.04% is necessary in grades TP304L and TP316L. Small outside diameter tubes are defined as those less than 0.500in.(23.7mm) in outside diameter and light wall tubes as those less than 0.049in.(1.24mm) in average wall thickness


China ASTM A403 Size on Size/Reducing Weldolet Stainless Steel Pipe Fittings supplier

ASTM A403 Size on Size/Reducing Weldolet Stainless Steel Pipe Fittings

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