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There are several types of stainless steel 321 90 Degree Elbow. Which can be from the Angle of direction, connection type, length and radius, material type, etc. Elbow or reduced elbow.
45/60/90/180 Degree Elbow
According to fluid direction of the pipelines, elbow can be divided into different degrees, such as 45 degree, 90 degree,180 degree, which are most common degrees. Also there are customized ones including 60 degree and 120 degree, for some special pipelines.
Concept Of Elbow Radius
Stainless steel 321 90 degree elbow radius average radius of curvature. If the radius is the same as the pipe diameter, it is called a short radius elbow, which is the abbreviation of SR elbow and is usually used for low pressure and low speed pipelines.
If its radius is larger than the pipe diameter and R ≥ 1.5 diameter, it is called a long radius elbow (LR elbow), which is suitable for high-pressure and large-flow pipelines.
Dimensions Butt Weld Stainless Steel 321 Elbow 45°-90°LR and 3D
NPS | OD(MM) | 90Degree | 45 Degree | 90Degree | 45 Degree |
LR | LR | 3D | 3D | ||
Center to End | Center to End | Center to End | Center to End | ||
A | B | A | B | ||
18 | 457 | 686 | 286 | 1372 | 568 |
20 | 508 | 762 | 318 | 1524 | 632 |
22 | 559 | 838 | 343 | 1676 | 694 |
24 | 610 | 914 | 381 | 1829 | 757 |
26 | 660 | 991 | 406 | 1981 | 821 |
28 | 711 | 1067 | 438 | 2134 | 883 |
30 | 762 | 1143 | 470 | 2286 | 946 |
32 | 813 | 1219 | 502 | 2438 | 1010 |
34 | 864 | 1295 | 533 | 2591 | 1073 |
36 | 914 | 1372 | 565 | 2743 | 1135 |
38 | 965 | 1448 | 600 | 2896 | 1200 |
40 | 1016 | 1524 | 632 | 3048 | 1264 |
42 | 1067 | 1600 | 660 | 3200 | 1326 |
44 | 1118 | 1676 | 695 | 3353 | 1389 |
46 | 1168 | 1753 | 727 | 3505 | 1453 |
48 | 1219 | 1829 | 759 | 3658 | 1516 |
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr |
| ASTM A403 WP321 | MIN | 9.00 | 17.00 | |||||
| MAX | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 12.00 | 19.00 |
Mechanical properties
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| ASTM A403 WP321 | 515 min | 205 min | 28 min |
Inspection of Stainless Steel 321 90Degree Elbow
Dimension measurements, all within standard tolerance.
Thickness tolerance:+/-12.5% , or on your request.
PMI
PT\UT\X-ray test
Third party inspection.
There are several types of stainless steel 321 90 Degree Elbow. Which can be from the Angle of direction, connection type, length and radius, material type, etc. Elbow or reduced elbow.
45/60/90/180 Degree Elbow
According to fluid direction of the pipelines, elbow can be divided into different degrees, such as 45 degree, 90 degree,180 degree, which are most common degrees. Also there are customized ones including 60 degree and 120 degree, for some special pipelines.
Concept Of Elbow Radius
Stainless steel 321 90 degree elbow radius average radius of curvature. If the radius is the same as the pipe diameter, it is called a short radius elbow, which is the abbreviation of SR elbow and is usually used for low pressure and low speed pipelines.
If its radius is larger than the pipe diameter and R ≥ 1.5 diameter, it is called a long radius elbow (LR elbow), which is suitable for high-pressure and large-flow pipelines.
Dimensions Butt Weld Stainless Steel 321 Elbow 45°-90°LR and 3D
NPS | OD(MM) | 90Degree | 45 Degree | 90Degree | 45 Degree |
LR | LR | 3D | 3D | ||
Center to End | Center to End | Center to End | Center to End | ||
A | B | A | B | ||
18 | 457 | 686 | 286 | 1372 | 568 |
20 | 508 | 762 | 318 | 1524 | 632 |
22 | 559 | 838 | 343 | 1676 | 694 |
24 | 610 | 914 | 381 | 1829 | 757 |
26 | 660 | 991 | 406 | 1981 | 821 |
28 | 711 | 1067 | 438 | 2134 | 883 |
30 | 762 | 1143 | 470 | 2286 | 946 |
32 | 813 | 1219 | 502 | 2438 | 1010 |
34 | 864 | 1295 | 533 | 2591 | 1073 |
36 | 914 | 1372 | 565 | 2743 | 1135 |
38 | 965 | 1448 | 600 | 2896 | 1200 |
40 | 1016 | 1524 | 632 | 3048 | 1264 |
42 | 1067 | 1600 | 660 | 3200 | 1326 |
44 | 1118 | 1676 | 695 | 3353 | 1389 |
46 | 1168 | 1753 | 727 | 3505 | 1453 |
48 | 1219 | 1829 | 759 | 3658 | 1516 |
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr |
| ASTM A403 WP321 | MIN | 9.00 | 17.00 | |||||
| MAX | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 12.00 | 19.00 |
Mechanical properties
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| ASTM A403 WP321 | 515 min | 205 min | 28 min |
Inspection of Stainless Steel 321 90Degree Elbow
Dimension measurements, all within standard tolerance.
Thickness tolerance:+/-12.5% , or on your request.
PMI
PT\UT\X-ray test
Third party inspection.
