Overview of ASTM A403 Stainless Steel Pipe Fittings
ASTM A403 pipe fittings are crafted from austenitic stainless steel, utilizing welding to form the pipe assemblies. These fittings are renowned for their excellent corrosion resistance, high-temperature strength, and robust performance in low temperatures, making them indispensable across various sectors and industries for sophisticated pipeline systems.
Understanding the ASTM A403 Standard
The ASTM A403 standard outlines the specifications for wrought austenitic stainless steel piping components, encompassing a diverse array of stainless steel grades such as 304, 316, 316L, 321, 904L, and 31254. This specification governs the production, inspection, and testing protocols for stainless steel butt welding fittings. It categorizes and labels fittings based on material type, size, and pressure rating to define their application scope. Moreover, the standard details essential criteria for chemical composition, mechanical properties, heat treatment, and surface finish.
Range of ASTM A403 Pipe Fittings
The ASTM A403 series includes grades such as WP304/304L, WP316/316L, WP904L, WP317/317L, WP31254, WP347, and WP321. These fittings are designed to meet the demands of pipeline applications in varied operational environments.
Our Production Capabilities
Our facility is equipped to manufacture high-quality carbon steel, stainless steel, and alloy steel pipe fittings conforming to international standards like ASME/ANSI, JIS, DIN, and ISO. Our product range includes a variety of fittings such as equal diameter tees, reducing tees, elbows, crosses, concentric reducers, and eccentric reducers. We are committed to delivering the highest quality pipe fittings, ensuring prompt delivery and dependable service at competitive rates.
ASME B16.9
| Nominal Size | Outside Diameter at Bevel | Center to Center | Back to Face |
| 180°Returns |
| DN | NPS | OD | O | K |
| LR | SR | LR | SR |
15
20
25 | 1/2
3/4
1 | 21.3
26.7
33.4 | 76
76
76 | 51 | 48
51
56 | 41 |
32
40
50 | 1 1/4
1 1/2
2 | 42.2
48.3
60.3 | 95
114
152 | 64
76
102 | 70
83
106 | 52
62
81 |
65
80
90
100 | 2 1/2
3
3 1/2
4 | 73.0
88.9
101.6
114.3 | 190
229
267
305 | 127
152
178
203 | 132
159
184
210 | 100
121
140
159 |
125
150
200 | 5
6
8 | 141.3
168.3
219.1 | 381
457
610 | 254
305
406 | 262
313
414 | 197
237
313 |
250
300
350 | 10
12
14 | 273.0
323.8
355.6 | 762
914
1067 | 508
609
711 | 518
619
711 | 391
467
533 |
400
450
500 | 16
18
20 | 406.4
457.0
508.0 | 1219
1372
1524 | 813
914
1016 | 813
914
1016 | 610
686
762 |
| 550
600
650 | 22
24
26 | 559.0
610.0
660.0 | 1676
1829 | 1118
1219 | 1118
1219 | 838
914 |
- Stainless Steel-Pipe Fittings
Product Tags:
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Mill ASME/ANSI B16.9 A403 WP904L WP31254 WP347 Butt Welded Stainless Steel Pipe Fittings 180 Degree LR And SR Elbow Images
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