Jacket Bracing Pipe
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Standard:
YB/T5035
Standard of the Chinese metallurgical industry
Q/OHAD001-1997
Hengyang Company
Application:
For manufacturing of autosemi-shaft casing
| Grade | C | Si | Mn | Cr | Mo | B | Cu | Ni | P | S |
| Max | ||||||||||
| 45 | 0.42~0.50 | 0.17~0.37 | 0.5~0.8 | ≤0.25 | -- | -- | ≤0.25 | ≤0.3 | 0.035 | 0.035 |
| 45Mn2 | 0.42~0.49 | 0.17~0.37 | 1.4~1.8 | ≤0.3 | ≤0.15 | -- | ≤0.25 | ≤0.3 | 0.035 | 0.035 |
| 40MnB | 0.37~0.44 | 0.17~0.37 | 1.1~1.4 | ≤0.25 | -- | 0.0005~0.0035 | ≤0.25 | ≤0.3 | 0.035 | 0.035 |
| 40Cr | 0.37~0.44 | 0.17~0.37 | 0.5~0.8 | 0.8~1.1 | ≤0.15 | -- | ≤0.25 | ≤0.3 | 0.035 | 0.035 |
Note: Drive shaft pipe of 25MnCr, 20Mn2, 30Mn2 can be provided as per agreement.
Dimension Tolerances: Pipe OD and wall thickness allowed tolerances as per YB/T5035| Steel pipe supply conditions | Pipe sizes | Allowed tolerances | |||
| Classification | Ⅰ | Pipes delivered as per OD and WT | OD | ±1% | |
| WT | WT≤7mm 7mm<s≤15mm </s≤15mm WT>15mm | 15% -9% 12.5% -10% 12.5% -7.5% | |||
| Ⅱ | Pipes delivered as per OD , ID and WT | Outside diameter(D) Inside diameter(d) difference of wall thickness (ΔS) | ±1.0% ±1.75% ≤15% | ||
| Ⅲ | OD=77mm ID=57mm WT=10mm | Outside diameter(D) Inside diameter(d) difference of wall thickness (ΔS) | 1.0mm -0.3mm 1.5mm -0.5mm ≤1.5mm | ||
| Note: Pipe wall thickness difference is the same cross-section of the difference between the maximum and minimum thickness | |||||
| Pipe sizes(mm) | Allowed tolerances | ||
| OD | ID | WT | |
| ∮ 77 x 10 | 1.0mm -0.3mm | 1.5mm -0.5mm | ≤1.4mm |
| ∮ 83 x 11 | ±0.9% | ±1.75% | ≤1.5mm |
| Note: Pipe wall thickness difference is the same cross-section of the difference between the maximum and minimum thickness | |||
| Item NO. | Grade | Mechanical Properties | |||
| Rm MPa Tensile Strength | Rel MPa Yield Point | A % Elongation | HB Hardness | ||
| 1 | 45 | ≥590 | ≥335 | ≥14 | -- |
| 2 | 45Mn2 | -- | -- | -- | 217~269 |
| 3 | 40MnB | -- | -- | -- | 217~269 |
| 4 | 40Cr | -- | -- | -- | 217~269 |
| Nominal OD(mm) | Nominal Wall Thickness (mm) | ||||||||||||
| 7 | 10 | 11 | 11.5 | 12 | 13 | 13.5 | 15 | 16 | 20 | 20.5 | 26 | 28.5 | |
| Kg/m | |||||||||||||
| 76 | 11.91 | ||||||||||||
| 77 | 16.52 | ||||||||||||
| 80 | 19.43 | ||||||||||||
| 83 | 19.53 | ||||||||||||
| 89 | 28.8 | ||||||||||||
| 92 | 23.67 | ||||||||||||
| 95 | 24.56 | 26.29 | |||||||||||
| 96 | 24.86 | 29.96 | |||||||||||
| 102 | 29.46 | ||||||||||||
| 108 | 34.4 | ||||||||||||
| 114 | 38.67 | 46.36 | 56.42 | 60.09 | |||||||||
| 121 | 50.81 | ||||||||||||
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