The ASME B16.9 standard includes the overall dimensions, tolerances, pressure ratings, test and marking of the butt weld key made by the factory for NPS 1/2 to NPS 48 (DN 15 to DN 1200)
ASTM A234 GR.WPB Chemical composition and performance index (standard value)
Wt% ≤0.30, Si (Wt%) ≥0.10, Mn (Wt%) 0.29-1.06, P (Wt%) ≤0.05, S (Wt%) ≤0.058.
Tensile strength TS (Mpa) 415-585, yield strength YS (Mpa) ≥ 240, elongation E (%) 20, hardness HB ≤ 197.
Steel Elbow Specifications
Nominal Diameter |
Outside Diameter |
Center to End |
Center to Center |
Back to Face |
||||||
45°Elbow |
90°Elbow |
180°Elbow |
||||||||
B |
A |
O |
K |
|||||||
DN |
NPS |
Series A |
Series B |
Long |
Long |
Short |
Long |
Short |
Long |
Short |
15 |
1/2 |
21.3 |
18 |
16 |
38 |
- |
76 |
- |
48 |
- |
20 |
3/4 |
26.9 |
25 |
19 |
38 |
- |
76 |
- |
51 |
- |
25 |
1 |
33.7 |
32 |
22 |
38 |
25 |
76 |
51 |
56 |
41 |
32 |
1.1/4 |
42.4 |
38 |
25 |
48 |
32 |
95 |
64 |
70 |
52 |
40 |
1.1/2 |
48.3 |
45 |
29 |
57 |
38 |
114 |
76 |
83 |
62 |
50 |
2 |
60.3 |
57 |
35 |
76 |
51 |
152 |
102 |
106 |
81 |
65 |
2.1/2 |
76.1(73) |
76 |
44 |
95 |
64 |
190 |
127 |
132 |
100 |
80 |
3 |
88.9 |
89 |
51 |
114 |
76 |
229 |
152 |
159 |
121 |
90 |
3.1/2 |
101.6 |
- |
57 |
133 |
89 |
267 |
178 |
184 |
140 |
100 |
4 |
114.3 |
108 |
64 |
152 |
102 |
305 |
203 |
210 |
159 |
125 |
5 |
139.7 |
133 |
79 |
190 |
127 |
381 |
254 |
262 |
197 |
150 |
6 |
168.3 |
159 |
95 |
229 |
152 |
457 |
305 |
313 |
237 |
200 |
8 |
219.1 |
219 |
127 |
305 |
203 |
610 |
406 |
414 |
313 |
250 |
10 |
273.0 |
273 |
159 |
381 |
254 |
762 |
508 |
518 |
391 |
300 |
12 |
323.9 |
325 |
190 |
457 |
305 |
914 |
610 |
619 |
467 |
350 |
14 |
355.6 |
377 |
222 |
533 |
356 |
1067 |
711 |
711 |
533 |
400 |
16 |
406.4 |
426 |
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