ASTM A403 WP904L Elbow / End Cap / Stub End Manufacturer In India
What is Stainless Steel 904L BW fitting?
Stainless steel 904L BW fittings belong to non-stabilized super austenitic grade. These low carbon grade fittings play a critical role in influencing the characteristics of the flow in the system. Fittings from this grade can be employed in changing the direction of the flow or joining pipes of different sizes in the system. The fittings can be produced either through welded or seamless procedures. In the seamless process, they are cut, heated and shaped precisely, while in the welding process, they are kept in over each other and welded together. These fittings are designed with a high concentration of chromium, nickel with small additions of copper and molybdenum. The excellent concentration enables them to withstand crevice and crack corrosion cracking. The high-grade contents also give these components enhanced formability and toughness.
What is a 904L Stainless Steel 45 degree elbow?
Elbows are one of the most sought-after pipe fittings in the 904L stainless steel grade. These elbows are used in creating sharp bends in pipelines to change the direction of the flow of fluids or gases. 904L Stainless Steel 45 degree elbow is employed to change the direction of flow by 45 degrees. These elbows are utilized as a joint for pipes, which are at a right angle. They are designed with a radius of curvature that is one or twice the size of the pipe diameter. 45 degrees elbows are generally manufactured as long radius elbows, which are preferably seamless in their construction.
How many types of ASTM A403 WP 904L elbow are there?
ASTM A403 WP 904L elbow is a versatile component, which provides flexibility in changing the pipe direction to redirect the flow. These elbows are available in different shapes, directions to meet different piping requirements. Some of the elbows in this grade are
- 90 degrees and 45 degrees elbows are the most common elbows, which help in changing the direction of flow by 90 and 45 degrees respectively. Apart from this, elbows in this range can be availed at 22.5 and 180 degrees.
- Long radius elbow- In this elbow, the centerline radius is less than 1.5 times the diameter of the pipe.
- Short radius elbow-In these elbows, the centerline radius is similar to the nominal size of the pipe.
- Reducing elbow-A reducing elbow is employed in joining piping components of dissimilar sizes in the system.

Stainless Steel 904L Pipe Fittings

904L Stainless Steel Elbow

SS 904L Buttweld Tee

Stainless Steel 904l Pipe Fittings Equivalent
STANDARD | WERKSTOFF NR. | UNS | JIS | BS | KS | AFNOR | EN |
Stainless Steel 904L Pipe Fittings | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
SS 904l Pipe Elbow Chemical Composition
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
SS 904L | 0.020 maximum | 2.00 maximum | 1.00 maximum | 0.040 maximum | 0.030 maximum | 19.00 – 23.00 | 4.00 – 5.00 maximum | 23.00 – 28.00 | 1.00 – 2.00 |
ASTM A403 WP 904L Buttweld Fittings Mechanical Properties
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
ASTM a403 WP904L Pressure Rating
Normal Size Of Pipe (inches) |
Pipe Sch | OD
(inch) |
Wall Thick. (inch) |
Temperature (oF) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
100 | 200 | 300 | 400 | 500 | 600 | 650 | 700 | 750 | ||||
Allowable Stress (psi) | ||||||||||||
16700 | 16700 | 16700 | 15500 | 14400 | 13500 | 13200 | 12900 | 12600 | ||||
1" | 40 | 1.315 | 0.133 | 2205 | 2205 | 2205 | 2047 | 1902 | 1783 | 1743 | 1703 | 1664 |
80 | 1.315 | 0.179 | 3061 | 3061 | 3061 | 2841 | 2640 | 2475 | 2420 | 2365 | 2310 | |
160 | 1.315 | 0.250 | 4493 | 4493 | 4493 | 4170 | 3874 | 3632 | 3552 | 3471 | 3390 | |
1 1/2" | 40 | 1.900 | 0.145 | 1629 | 1629 | 1629 | 1512 | 1404 | 1317 | 1287 | 1258 | 1229 |
80 | 1.900 | 0.200 | 2303 | 2303 | 2303 | 2138 | 1986 | 1862 | 1821 | 1779 | 1738 | |
160 | 1.900 | 0.281 | 3362 | 3362 | 3362 | 3120 | 2899 | 2717 | 2657 | 2597 | 2536 | |
2" | 40 | 2.375 | 0.154 | 1371 | 1371 | 1371 | 1272 | 1182 | 1108 | 1083 | 1059 | 1034 |
80 | 2.375 | 0.218 | 1985 | 1985 | 1985 | 1843 | 1712 | 1605 | 1569 | 1534 | 1498 | |
160 | 2.375 | 0.344 | 3283 | 3283 | 3283 | 3047 | 2831 | 2654 | 2595 | 2536 | 2477 | |
3" | 40 | 3.500 | 0.216 | 1301 | 1301 | 1301 | 1208 | 1122 | 1052 | 1028 | 1005 | 982 |
80 | 3.500 | 0.300 | 1844 | 1844 | 1844 | 1712 | 1590 | 1491 | 1458 | 1425 | 1391 | |
160 | 3.500 | 0.438 | 2787 | 2787 | 2787 | 2587 | 2403 | 2253 | 2203 | 2153 | 2103 | |
4" | 40 | 4.500 | 0.237 | 1102 | 1102 | 1102 | 1023 | 950 | 891 | 871 | 851 | 831 |
80 | 4.500 | 0.337 | 1596 | 1596 | 1596 | 1482 | 1377 | 1291 | 1262 | 1233 | 1204 | |
160 | 4.500 | 0.531 | 2611 | 2611 | 2611 | 2424 | 2552 | 2111 | 2064 | 2017 | 1970 | |
5" | 40 | 5.563 | 0.258 | 965 | 965 | 965 | 896 | 832 | 780 | 763 | 746 | 728 |
80 | 5.563 | 0.375 | 1428 | 1428 | 1428 | 1325 | 1231 | 1154 | 1129 | 1103 | 1077 | |
160 | 5.563 | 0.625 | 2474 | 2474 | 2474 | 2296 | 2133 | 2000 | 1955 | 1911 | 1866 | |
6" | 40 | 6.625 | 0.280 | 877 | 877 | 877 | 814 | 756 | 709 | 693 | 677 | 661 |
80 | 6.625 | 0.432 | 1379 | 1379 | 1379 | 1280 | 1189 | 1115 | 1090 | 1065 | 1040 | |
160 | 6.625 | 0.719 | 2382 | 2382 | 2382 | 2211 | 2054 | 1925 | 1883 | 1840 | 1797 | |
8" | 40 | 8.625 | 0.322 | 771 | 771 | 771 | 716 | 665 | 623 | 610 | 596 | 582 |
80 | 8.625 | 0.500 | 1218 | 1218 | 1218 | 1131 | 1050 | 985 | 963 | 941 | 919 | |
160 | 8.625 | 0.906 | 2298 | 2298 | 2298 | 2133 | 1982 | 1858 | 1817 | 1775 | 1734 | |
10" | 40 | 10.750 | 0.365 | 699 | 699 | 699 | 649 | 603 | 565 | 553 | 540 | 528 |
80 | 10.750 | 0.594 | 1159 | 1159 | 1159 | 1075 | 999 | 937 | 916 | 895 | 874 | |
160 | 10.750 | 1.125 | 2289 | 2289 | 2289 | 2124 | 1974 | 1850 | 1809 | 1768 | 1727 |
Check ASME SB366 SS 904L Seamless Con Reducer Specification, Schedule Chart, Price List.
SA403 WP904L Buttweld Reducer Weight Chart
Normal Pipe Size (NPS) | LBS | Kilogram (KG) |
1/2 | 0.25 | 0.11 |
3/4 | 0.25 | 0.11 |
1 | 0.5 | 0.23 |
1¼ | 0.9 | 0.41 |
1½ | 1.15 | 0.52 |
2 | 2.2 | 1 |
2½ | 4 | 1.81 |
3 | 6.5 | 2.95 |
3½ | 8.35 | 3.79 |
4 | 13.5 | 6.12 |
5 | 22 | 9.98 |
6 | 35 | 15.88 |
8 | 71 | 32.21 |
10 | 107 | 48.53 |
12 | 160 | 72.57 |
14 | 205 | 92.99 |
16 | 276 | 125.19 |
18 | 340 | 154.22 |
20 | 420 | 190.51 |
22 | 520 | 235.87 |
24 | 600 | 272.16 |
26 | 729 | 330.67 |
30 | 975 | 442.25 |
36 | 1412 | 640.47 |
UNS N08904 Equal Tee Dimensions Chart

Nominal Pipe Size |
OD | ASTM A403 WP904L 90° Elbows | ASTM A403 WP904L 45° Elbows | ASTM A403 WP904L 180° Returns | ||||
---|---|---|---|---|---|---|---|---|
(inch.)
|
LR
|
SR
|
LR
|
LR
|
||||
(millimeter)
|
(inch.)
|
Center to Face
(inch.) |
Center to Face
(inch.) |
Center to Face
(inch.) |
Radius
(inch.) |
Center to Center
(inch.) |
Back to face
(inch.) |
|
1/2
|
21.3
|
0.840
|
1 1/2
|
–
|
5/8
|
2
|
1 7/8
|
|
3/4
|
26.7
|
1.050
|
1 1/8
|
–
|
7/16
|
2 1/4
|
1 11/16
|
|
1
|
33.4
|
1.315
|
1 1/2
|
1
|
7/8
|
3
|
2 3/16
|
|
1 1/4
|
42.2
|
1.660
|
1 7/8
|
1 1/4
|
1
|
3 3/4
|
2 3/4
|
|
1 1/2
|
48.3
|
1.900
|
2 1/4
|
1 1/2
|
1 1/8
|
3
|
4 1/2
|
3 1/4
|
2
|
60.3
|
2.375
|
3
|
2
|
1 3/8
|
4
|
6
|
4 3/16
|
2 1/2
|
73.0
|
2.875
|
3 3/4
|
2 1/2
|
1 3/4
|
5
|
7 1/2
|
5 3/16
|
3
|
88.9
|
3.500
|
4 1/2
|
3
|
2
|
6
|
9
|
6 1/4
|
3 1/2
|
101.6
|
4.000
|
5 1/4
|
3 1/2
|
2 1/4
|
7
|
10 1/2
|
7 1/4
|
4
|
114.3
|
4.500
|
6
|
4
|
2 1/2
|
8
|
12
|
8 1/4
|
5
|
141.3
|
5.563
|
7 1/2
|
5
|
3 1/8
|
10
|
15
|
10 5/16
|
6
|
168.3
|
6.625
|
9
|
6
|
3 3/4
|
12
|
18
|
12 5/16
|
8
|
219.1
|
8.625
|
12
|
8
|
5
|
12
|
24
|
16 5/16
|
10
|
273.1
|
10.750
|
15
|
10
|
6 1/4
|
15
|
30
|
20 3/8
|
12
|
323.9
|
12.750
|
18
|
12
|
7 1/2
|
18
|
36
|
24 3/8
|
Refer UNS N08904 Equal Tee Equivalent Grades And Werkstoff Nr. 1.4539 Pipe Bend Chemical Or Mechanical Properties.
Werkstoff Nr. 1.4539 Pipe Bend Specification
Specification : | ASTM A403 Stainless Steel 904L Pipe Fittings |
---|---|
Connection | Welding |
Bending Radius | R=2D, 3D, 5D, 6D, 8D, 1D, 10D or Custom |
Thickness | SCH10, SCH 80, SCH 100, SCH20, SCH30, STD SCH40, SCH 160, XXS, SCH60, XS, SCH 120, SCH 140, available with NACE MR 01-75 |
Origin & Mills | Indian, Korean, Russian, Japanese, European |
Manufacturing process | Press, Forge, Push, Cast, etc. |
Specialized manufacturer of | Tees, Crosses, Reducers, 90º Elbows, Stub End, Pipe Bend, 45º Elbows, Pipe Cap |
Type | DN15-DN1200 |
Size Range | ½" NB to 24" NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100) |
size | Seamless ButtWeld Fittings: 1/2 - 10 inch Welded Butt Weld Fittings: 1/2" - 48" |
Dimensions | ASME B16.28, MSS-SP-43, ASME/ANSI B16.9, BS4504, BS10, BS4504, BS1560, |
Types Of ASTM A403 WP 904l Stainless Steel Buttweld Pipe Fittings

12 Inch, SCH 100, B16.9 A403 WP904L 90 Degree Elbow

3 Inch, SCH 80S, B16.9, ASTM A403 WP904L Stainless 90 Degree Elbow

3 Inch, SCH 10S, ASME B16.9, ASTM A403 WP904L Seamless Elbow

8 Inch, SCH 10S, ATM A403 WP904L Seamless 45D LR Elbow

14 Inch, BW, SCH40, 90D, ASTM A403 904L SMLS Elbow

2 Inch, SCH 10S, ASTM A403 WP904L SS Long Radius Elbow

14 Inch, SCH 120, ASTM A403 WP 904L 90 Degree LR Elbow

16 Inch, A403 WP904L, LR, ASME B16.9 Beveled End Seamless Elbow
A403 WP904L Buttweld End Cap Thickness
SA403 WP904L 90° Elbows | SA403 WP904L 180° Returns | SA403 WP904L 45° Elbows | SA403 WP904L Tees | SA403 WP904L Lap Joint Stub Ends | SA403 WP904L 180° Return Bends | ||||||||||
Normal Size Of Pipe | 90 Deg Elbows | 45 Deg Elbows | 180 Deg Return Bends | Tee | Lap Joint Stub Ends | Caps | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LR | SR | 3R | LR | 3R | LR | SR | C | M | F | G | R | E | |||
A | A | A | B | B | O | K | O | K | |||||||
½ | 1.50 | - | - | 0.62 | - | 3.00 | 1.88 | - | - | 1.00 | 1.00 | 3.00 | 1.38 | 0.12 | 1.00 |
¾ | 1.50 | - | - | 0.75 | - | 3.00 | 2.00 | - | - | 1.12 | 1.12 | 3.00 | 1.69 | 0.12 | 1.00 |
1 | 1.50 | 1.00 | - | 0.88 | - | 3.00 | 2.19 | 2.00 | 1.62 | 1.50 | 1.50 | 4.00 | 2.00 | 0.12 | 1.50 |
1¼ | 1.88 | 1.25 | - | 1.00 | - | 3.75 | 2.75 | 2.50 | 2.06 | 1.88 | 1.88 | 4.00 | 2.50 | 0.19 | 1.50 |
1½ | 2.25 | 1.50 | - | 1.12 | - | 4.50 | 3.25 | 3.00 | 2.44 | 2.25 | 2.25 | 4.00 | 2.88 | 0.25 | 1.50 |
2 | 3.00 | 2.00 | 6.00 | 1.38 | 2.50 | 6.00 | 4.19 | 4.00 | 3.19 | 2.50 | 2.50 | 6.00 | 3.62 | 0.31 | 1.50 |
2½ | 3.75 | 2.50 | 7.50 | 1.75 | 3.12 | 7.50 | 5.19 | 5.00 | 3.94 | 3.00 | 3.00 | 6.00 | 4.12 | 0.31 | 1.50 |
3 | 4.50 | 3.00 | 9.00 | 2.00 | 3.75 | 9.00 | 6.25 | 6.00 | 4.75 | 3.38 | 3.38 | 6.00 | 5.00 | 0.38 | 2.00 |
3½ | 5.25 | 3.50 | 10.50 | 2.25 | - | 10.50 | 7.25 | 7.00 | 5.50 | 3.75 | 3.75 | 6.00 | 5.50 | 0.38 | 2.50 |
4 | 6.00 | 4.00 | 12.00 | 2.50 | 5.00 | 12.00 | 8.25 | 8.00 | 6.25 | 4.12 | 4.12 | 6.00 | 6.19 | 0.44 | 2.50 |
5 | 7.50 | 5.00 | 15.00 | 3.12 | - | 15.00 | 10.31 | 10.00 | 7.75 | 4.88 | 4.88 | 8.00 | 7.31 | 0.44 | 3.00 |
6 | 9.00 | 6.00 | 18.00 | 3.75 | 7.44 | 18.00 | 12.31 | 12.00 | 9.31 | 5.62 | 5.62 | 8.00 | 8.50 | 0.50 | 3.50 |
8 | 12.00 | 8.00 | 24.00 | 5.00 | 9.94 | 24.00 | 16.31 | 16.00 | 12.31 | 7.00 | 7.00 | 8.00 | 10.62 | 0.50 | 4.00 |
10 | 15.00 | 10.00 | 30.00 | 6.25 | 12.44 | 30.00 | 20.38 | 20.00 | 15.38 | 8.50 | 8.50 | 10.00 | 12.75 | 0.50 | 5.00 |
12 | 18.00 | 12.00 | 36.00 | 7.50 | 14.88 | 36.00 | 24.38 | 24.00 | 18.38 | 10.00 | 10.00 | 10.00 | 15.00 | 0.50 | 6.00 |
14 | 21.00 | 14.00 | 42.00 | 8.75 | 17.38 | 42.00 | 28.00 | 28.00 | 21.00 | 11.00 | 11.00 | 12.00 | 16.25 | 0.50 | 6.50 |
16 | 24.00 | 16.00 | 48.00 | 10.00 | 19.88 | 48.00 | 32.00 | 32.00 | 24.00 | 12.00 | 12.00 | 12.00 | 18.50 | 0.50 | 7.00 |
18 | 27.00 | 18.00 | 54.00 | 11.25 | 22.38 | 54.00 | 36.00 | 36.00 | 27.00 | 13.50 | 13.50 | 12.00 | 21.00 | 0.5 | 8.00 |
20 | 30.00 | 20.00 | 60.00 | 12.50 | 24.88 | 60.00 | 40.00 | 40.00 | 30.00 | 15.00 | 15.00 | 12.00 | 23.00 | 0.50 | 9.00 |
22 | 33.00 | 22.00 | 66.00 | 13.50 | 27.31 | 66.00 | 44.00 | 44.00 | 33.00 | 16.50 | 16.50 | 12.00 | 25.25 | 0.50 | 10.00 |
24 | 36.00 | 24.00 | 72.00 | 15.00 | 29.81 | 72.00 | 48.00 | 48.00 | 36.00 | 17.00 | 17.00 | 12.00 | 27.25 | 0.50 | 10.50 |
26 | 39.00 | - | 78.00 | 16.00 | 32.31 | - | - | - | - | 19.50 | 19.50 | - | - | - | 10.50 |
28 | 42.00 | - | 84.00 | 17.25 | 34.75 | - | - | - | - | 20.50 | 20.50 | - | - | - | 10.50 |
30 | 45.00 | - | 90.00 | 18.50 | 37.25 | - | - | - | - | 22.00 | 22.00 | - | - | - | 10.50 |
32 | 48.00 | - | - | 19.75 | - | - | - | - | - | 23.50 | 23.50 | - | - | - | 10.50 |
34 | 51.00 | - | 102.00 | 21.00 | 42.25 | - | - | - | - | 25.00 | 25.00 | - | - | - | 10.50 |
36 | 54.00 | - | 108.00 | 22.25 | 44.69 | - | - | - | - | 26.50 | 26.50 | - | - | - | 10.50 |
38 | 57.00 | - | 114.00 | 23.62 | 47.25 | - | - | - | - | 28.00 | 28.00 | - | - | - | 12.00 |
40 | 60.00 | - | 120.00 | 24.88 | 49.75 | - | - | - | - | 29.50 | 29.50 | - | - | - | 12.00 |
42 | 63.00 | - | 126.00 | 26.00 | 52.19 | - | - | - | - | 30.00 | 28.00 | - | - | - | 12.00 |
44 | 66.00 | - | 132.00 | 27.38 | 54.69 | - | - | - | - | 32.00 | 30.00 | - | - | - | 13.50 |
46 | 69.00 | - | 138.00 | 28.62 | 57.19 | - | - | - | - | 33.50 | 31.50 | - | - | - | 13.50 |
48 | 72.00 | - | 144.00 | 29.88 | 59.69 | - | - | - | - | 35.00 | 33.00 | - | - | - | 13.50 |