Views: 2 Author: Site Editor Publish Time: 2025-07-01 Origin: Site
ASTM A403 stainless steel elbow is a kind of fitting that connects two pipes by welding to change the direction of the pipe. Common angles are 45°, 90° and 180°, which are used for guiding and turning fluid media.
ASTM A403 is a standard specification published by the American Society for Testing and Materials (ASTM), which mainly covers forged austenitic stainless steel pipe fittings for pressure piping applications. These pipe fittings are designed for pressure piping and pressure vessel services in high temperature and corrosive environments.
In chemical production, various corrosive media are transmitted in pipelines. Stainless steel elbows can ensure the integrity and safety of the pipeline system. In building water supply and drainage systems and central air-conditioning systems, stainless steel elbows are used to connect pipelines and realize pipeline layout. Contact us
Specification | |
Size Range | 1/2"- 80" / DN15 - 2000 |
Thickness Schedule | SCH 10, 20, 40, STD, XS, 80, 100, 120, 140, 160, XXS |
Standard | ANSI / ASME B16.9 |
Stainless Steel Grades | ASTM A403 WP304/304L/304H, 316/316L, 310S, 317, 347, 904L |
High corrosion resistance: especially suitable for chemical, marine, pharmaceutical and other environments requiring corrosion resistance.
Stable high temperature performance: can be used for a long time at higher temperatures, strong oxidation resistance.
Good weldability: butt-welding connection ensures smooth fluid transportation, high strength and good sealing.
High surface finish: the surface can be pickled or polished after processing to enhance corrosion resistance.
CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu |
ASTM A403 WP304 | MIN | 8 | 18 | ||||||||
MAX | 0.08 | 2 | 0.045 | 0.03 | 1 | 11 | 20 | ||||
ASTM A403 WP316 | MIN | 10 | 16 | 2 | |||||||
MAX | 0.08 | 2 | 0.045 | 0.03 | 1 | 14 | 18 | 3 | |||
ASTM A403 WP317 | MIN | 11 | 18 | 3 | |||||||
MAX | 0.08 | 2 | 0.05 | 0.03 | 1 | 15 | 20 | 4 | |||
ASTM A403 WP321 | MIN | 9 | 17 | ||||||||
MAX | 0.08 | 2 | 0.045 | 0.03 | 1 | 12 | 19 | ||||
ASTM A403 WP904L | MIN | 23 | 19 | 4 | 1 | ||||||
MAX | 0.02 | 2 | 0.045 | 0.035 | 1 | 28 | 23 | 5 | 0.1 | 2 |
MATERIAL | ASTM A403 WP304 | ASTM A403 WP316 | ASTM A403 WP317 | ASTM A403 WP321 | ASTM A403 WP904L |
T.S (MPA) | 515 min | 515 min | 515min | 515 min | 490 min |
Y.S (MPA) | 205 min | 205 min | 205min | 205 min | 220 min |
EL % | 28 min | 28 min | 28min | 28 min | 28 min |
Stainless steel | ||
Material number | EN | ASTM |
1.4307 – | X2CrNi18-9 | A 403 Grade WP304L |
1.4306 X 2 CrNi 19 11 | X2CrNi19-11 | A 403 Grade WP304L |
1.4301 X 5 CrNi 18 10 | X5CrNi18-10 | A 403 Grade WP304 |
1.4541 X 6 CrNiTi 18 10 | X6CrNiTi18-10 | A 403 Grade WP321 |
1.4550 X 6 CrNiNb 18 10 | X6CrNiNb18-10 | A 403 Grade WP347 |
1.4404 X 2 CrNiMo 17 13 2 | X2CrNiMo17-12-2 | A 403 Grade WP316L |
1.4401 X 5 CrNiMo 17 12 2 | X5CrNiMo17-12-2 | A 403 Grade WP316 |
1.4429 X 2 CrNiMoN 17 13 3 | X2CrNiMoN17-13-3 | A 403 Grade WP316LN |
1.4436 X 5 CrNiMo 17 13 3 | X3CrNiMo17-13-3 | A 403 Grade WP316 |
1.4435 X 2 CrNiMo 18 14 3 | X2CrNiMo18-14-3 | A 403 Grade WP316LN |
Classification by bending radius: can be divided into long radius elbow (LR ELBOW) and short radius elbow (SR ELBOW). Long radius elbow radius of curvature is equal to 1.5 times the outside diameter of the pipe, that is, R = 1.5D; short radius elbow radius of curvature is equal to the outside diameter of the pipe, that is, R = 1.0D (D is the diameter of the elbow, R is the radius of curvature).
Classification by bending angle: 45-degree elbow, 90-degree elbow and 180-degree elbow, according to the direction of the pipeline system and the layout of the needs of the pipeline to change the direction of flow.
Classification by production method: seamless elbow and straight-seam elbow. Seamless elbow is processed from the whole piece of metal material, there is no weld, with higher strength and sealing; straight-seam elbow is made of steel plate or steel strip through the welding process, with higher production efficiency and relatively low cost.
45°
90°
180°
Nominal Size | Outside Diameter at Bevel | Center to End | |||
90° Elbows | 45° Elbows | ||||
DN | NPS | OD | A | B | |
LR | SR | LR | |||
15 | 1/2 | 21.3 | 38 | 16 | |
20 | 3/4 | 26.7 | 38 | 19 | |
25 | 1 | 33.4 | 38 | 25 | 22 |
32 | 1 1/4 | 42.2 | 48 | 32 | 25 |
40 | 1 1/2 | 48.3 | 57 | 38 | 29 |
50 | 2 | 60.3 | 76 | 51 | 35 |
65 | 2 1/2 | 73.0 | 95 | 64 | 44 |
80 | 3 | 88.9 | 114 | 76 | 51 |
90 | 3 1/2 | 101.6 | 133 | 4、89 | 57 |
100 | 4 | 114.3 | 152 | 102 | 64 |
125 | 5 | 141.3 | 190 | 127 | 79 |
150 | 6 | 168.3 | 229 | 152 | 95 |
200 | 8 | 219.1 | 305 | 203 | 127 |
250 | 10 | 273.0 | 381 | 254 | 159 |
300 | 12 | 323.8 | 457 | 305 | 190 |
350 | 14 | 355.6 | 533 | 356 | 222 |
400 | 16 | 406.4 | 610 | 406 | 254 |
450 | 18 | 457.0 | 686 | 457 | 286 |
500 | 20 | 508.0 | 762 | 508 | 318 |
550 | 22 | 559.0 | 838 | 559 | 343 |
600 | 24 | 610.0 | 914 | 610 | 381 |
650 | 26 | 660.0 | 991 | 660 | 406 |
700 | 28 | 711.0 | 1067 | 711 | 438 |
750 | 30 | 762.0 | 1143 | 762 | 470 |
800 | 32 | 813.0 | 1219 | 813 | 502 |
850 | 34 | 864.0 | 1295 | 864 | 533 |
900 | 36 | 914.0 | 1372 | 914 | 565 |
950 | 38 | 965.0 | 1448 | 965 | 600 |
1000 | 40 | 1016.0 | 1524 | 1016 | 632 |
1050 | 42 | 1067.0 | 1600 | 1067 | 660 |
1100 | 44 | 1118.0 | 1676 | 1118 | 695 |
1150 | 46 | 1168.0 | 1753 | 1168 | 727 |
1200 | 48 | 1219.0 | 1829 | 1219 | 759 |
-Hardness test
-Flammability test
-Flattening test
-Positive material identification test
-Mechanical testing
-Intergranular corrosion test
-Macroscopic test
-Chemical test
-Pitting resistance test
1. Wooden Case Packaging (Plywood Case / Wooden Box)
Use fumigation-free wooden case or plywood box, moisture-proof and impact-proof. Usually several elbows are placed in each box and separated by foam or bubble wrap.
2. Pallet Packing (Pallet Packing)
Uniformly pack and place several elbows on a wooden pallet, and then wrapped with plastic film to fix.
3. Woven Bag/Plastic Bag Packing
Each elbow is first wrapped individually in plastic bag or bubble wrap to prevent friction and scratch. And then centralized into woven bags or cartons.
1.Pipe for petrochemical industry
2.Pharmaceutical industry
3.Food industry
4.Aviation and aerospace industry
5.Building decoration industry
6.Gas and oil
-Pipe and Tube (EN 10216-5, ASTM A213, ASTM A249, A312, A790,)
-Forged Fitting and Flange (ASTM A182 , ASTM A105,ASTM B564 )
-Butt Weld Fittings (ASTM A234, ASTM A403,ASTM A815)
-Round bar , Billet (ASTM A276, ASTM A479)
- Plate, Sheet, Strip(ASTM A240, EN 10028-7, A480)
-Bolting, Nuts（ASTM A193, A194, A320）
We Export ASTM A403 Stainless Steel Elbow to Saudi Arabia, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen , Syria, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Cambodia, Argentina, Bolivia, Brazil, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Jamaica, Bahamas, Denmark, Norway, Germany, France,Italy, United Kingdom, Spain, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Finland, Ireland, Croatia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Europe, Africa, Asia, North America, South America, Middle East.etc
1. What is ASTM A403 material?
ASTM A403 is a standard specification for forged austenitic stainless steel fittings, including elbows, tees, reducers, and caps for pressure piping and pressure vessels. These fittings are made from stainless steel grades 304, 304L, 316, and 316L, and are typically produced by forging, forming, and subsequent heat treatment to ensure excellent corrosion resistance, strength, and durability in high-temperature and corrosive environments.
2. What is the difference between ASTM A403 and ASTM A234?
The main difference between ASTM A403 and ASTM A234 lies in the type of material and application areas. ASTM A403 is applicable to austenitic stainless steel butt weld fittings, such as 304, 316, etc., which has excellent corrosion resistance and is commonly used in chemical, food, and pharmaceutical industries with high corrosion resistance requirements. ASTM A234 is suitable for carbon steel and alloy steel butt weld fittings, commonly used in oil, gas and high temperature and high pressure pipeline systems, emphasizing strength and heat resistance. Therefore, there is a clear difference between the two in the choice of material and the use of the environment.
