B16.9 45 Degree Long Radius Welding Elbow
Negotiable /Bag
Min.Order:1 Bag
CANGZHOU HAOYUAN PIPE FITTING MFG CO.,LTD
Then bend the production process. To elbow, for example, if the long radius of elbow, such as the use of steel push system, the first selection of specifications, the pipe material. Expansion rate, through theoretical calculations, the general expansion rate of 33% -35% between the back to push back. The general radius of 219mm diameter expansion rate of 50% .Select the raw material, according to the elbow size, then consider the radius of curvature, for example, 90 ° elbow, through its curvature can be calculated under the long material can be processed out 90 ° of the elbow. Can be calculated by the theoretical calculation, and then cut to length for the length. Finally, the material for hot push system.
Seamless elbow 45 degrees
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 | 254 | 610 | 406 | 1219 | 813 | 813 | 610 |
450 | 18 | 457.2 | 478 | 286 | 686 | 457 | 1372 | 914 | 914 | 686 |
500 | 20 | 508.0 | 529 | 318 | 762 | 508 | 1524 | 1016 | 1016 | 762 |
550 | 22 | 559 | - | 343 | 838 | 559 | 1676 | 1118 | 1118 | 838 |
600 | 24 | 610 | 630 | 381 | 914 | 610 | 1829 | 1219 | 1219 | 914 |
650 | 26 | 660 | - | 406 | 991 | 660 | 1982 | 1320 | - | - |
700 | 28 | 711 | 720 | 438 | 1067 | 711 | 2134 | 1422 | - | - |
750 | 30 | 762 | - | 470 | 1143 | 762 | 2286 | 1524 | - | - |
800 | 32 | 813 | 820 | 502 | 1219 | 813 | 2438 | 1626 | - | - |
850 | 34 | 864 | - | 533 | 1295 | 864 | 2590 | 1728 | - | - |
900 | 36 | 914 | 920 | 565 | 1372 | 914 | 2744 | 1828 | - | - |
950 | 38 | 965 | - | 600 | 1448 | 965 | 2896 | 1930 | - | - |
1000 | 40 | 1016 | 1020 | 632 | 1524 | 1016 | 3048 | 2032 | - | - |
1050 | 42 | 1067 | - | 660 | 1600 | 1067 | 3200 | 2134 | - | - |
1100 | 44 | 1118 | 1120 | 695 | 1676 | 1118 | 3352 | 2236 | - | - |
1150 | 46 | 1168 | - | 727 | 1753 | 1168 | 3506 | 2336 | - | - |
1200 | 48 | 1220 | 1220 | 759 | 1829 | 1219 | 3658 | 2440 | - | - |
High-quality products
Two 45-degree elbows can not be welded into a 90-degree bend to use, because the stress concentration area is the elbow pipe, expansion and most of the stress deformation during cooling are released at the elbow. Also weld itself to be the weak link, fatigue deformation will soon cause cracking damage, which planted a lot of hidden dangers, so do not at immediate convenience, eventually leading to huge losses.
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