ASME B16.9 Bend ASME B16. 49 is the standard specification covering the design, material, manufacturing, testing, marking, and inspection requirements for factory-made pipeline bends of carbon steel materials that have controlled chemistry and mechanical properties, produced by the induction bending process, with or without tangents & the minimum bending radius should not be less than 2-2.5 times the outer diameter of the pipe, and the shortest straight distance should not be less than 1.5-2 times the outer diameter of the pipe, except in special cases.
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Production range
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Seamless bends
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Welding bends
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Outside diameter
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1/2"～24"
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6"～60"
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Wall thickness
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4mm～200mm
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Bending radius
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R=3D～10D
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Product angle
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0°～180°
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| Carbon steel: | ASTM/ASME A234 WPB-WPC |
| Alloy steel: | ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911 |
| Stainless steel: | ASTM/ASME A403 WP 304-304L-304H-304LN-304N ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H |
| Low temperature steel: | ASTM/ASME A402 WPL 3-WPL 6 |
| High performance steel: | ASTM/ASME A860 WPHY 42-46-52-60-65-70 |
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Nominal |
DN |
Thread |
Pipe Specification |
L1 |
L2 |
L3 |
L |
R |
|---|---|---|---|---|---|---|---|---|
|
32.0 |
175 |
M240×6 |
245×36 |
120 |
130 |
360 |
1095 |
735 |
|
200 |
M265×6 |
273×40 |
130 |
140 |
390 |
1209 |
819 |
|
|
225 |
M320×6 |
325×50 |
175 |
185 |
525 |
1500 |
975 |
|
|
250 |
M350×6 |
355.6×55 |
195 |
205 |
580 |
1650 |
1070 |
|
|
22.0 |
175 |
M215×6 |
219×24 |
100 |
110 |
300 |
957 |
657 |
|
200 |
M240×6 |
245×26 |
110 |
120 |
330 |
1065 |
735 |
|
|
225 |
M265×6 |
273×29 |
115 |
125 |
345 |
1164 |
819 |
|
|
250 |
M295×6 |
299×32 |
120 |
130 |
360 |
1257 |
897 |
