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No. | 0.D | W.T | O.D Deviation | W.T Deviation | The hardness of burr | Ellipticity | Flexib ility | Coaxiality | Outer tube flaring rate | Flatten |
1 | 89 | 3.0-4.0 | ±0.40 | +0.1/0.2 | +0.20/-0.05 | 0.40 | W0.30 | <0.20 | 10% | 2/3D |
2 | 108 | 3.0-5.0 | ±0.40 | ±5%t | +0.20/-0.05 | 0.40 | W0.30 | W0.20 | 10% | 2/3D |
3 | 127 | 3.0-5.0 | ±0.40 | ±5%t | +0.20/-0.05 | 0.40 | W0.30 | W0.20 | 10% | 2/3D |
4 | 133 | 3.5-5.0 | ±0.60 | ±5%t | +0.20/-0.05 | 0.53 | <0.30 | W0.20 | 10% | 2/3D |
5 | 152 | 3.5-6.0 | ±0.60 | ±5%t | +0.20/-0.05 | 0.53 | W0.30 | <0.20 | 10% | 2/3D |
6 | 159 | 3.5-6.0 | ±0.60 | ±5%t | +0.20/-0.05 | 0.60 | W0.30 | W0.20 | 10% | 2/3D |
7 | 178 | 5.0-8.0 | ±0.60 | ±7.5%t | +0.20/-0.05 | 0.53 | W0.30 | W0.20 | 10% | 2/3D |
8 | 194 | 5.0-8.0 | ±0.60 | ±7.5%t | +0.20/-0.05 | 0.6 | W0.30 | <0.20 | 10% | 2/3D |
9 | 219 | 5.0-8.0 | ±0.5%D | ±7.5%t | +0.20/-0.05 | 0.6 | W0.30 | <0.20 | 10% | 2/3D |
The mechanical property of the steel pipe |
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Grade | Re|./(N/mm2) Lower yield strength | FUN mm” Tensile strength | A/% Elongation after fracture |
Not less than | |||
08、10 | 195 | 315 | 22 |
15 | 215 | 355 | 20 |
20 | 235 | 390 | 19 |
Q195 | 195 | 315 | 22 |
Q215AQ215B | 215 | 335 | 22 |
Q235A、Q235B、Q235C | 235 | 375 | 20 |
Q295A、Q295B | 295 | 390 | 18 |
Q345A、Q345B、Q345C | 345 | 470 | 18 |
C250-CQ | 230 | 320 | 10 |
Special requirements of the steel pipe mechanics performance |
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|
Re|./(N/mm2) Lower yield strength | RJfN/ mm2) Tensile strength | A/% Elongation after fracture |
Grade | Not less than | ||
08、10 | 205 | 375 | 13 |
15 | 225 | 400 | 11 |
20 | 245 | 440 | 9 |
Q195 | 205 | 335 | 14 |
Q215A、Q215B | 225 | 355 | 13 |
Q235A、Q235B、Q235C | 245 | 390 | 9 |
Q295A、Q295B | —— | —— | —— |
Q345A、Q345B、Q345C | —— | —— | —— |
No. | 0.D | W.T | O.D Deviation | W.T Deviation | The hardness of burr | Ellipticity | Flexib ility | Coaxiality | Outer tube flaring rate | Flatten |
1 | 89 | 3.0-4.0 | ±0.40 | +0.1/0.2 | +0.20/-0.05 | 0.40 | W0.30 | <0.20 | 10% | 2/3D |
2 | 108 | 3.0-5.0 | ±0.40 | ±5%t | +0.20/-0.05 | 0.40 | W0.30 | W0.20 | 10% | 2/3D |
3 | 127 | 3.0-5.0 | ±0.40 | ±5%t | +0.20/-0.05 | 0.40 | W0.30 | W0.20 | 10% | 2/3D |
4 | 133 | 3.5-5.0 | ±0.60 | ±5%t | +0.20/-0.05 | 0.53 | <0.30 | W0.20 | 10% | 2/3D |
5 | 152 | 3.5-6.0 | ±0.60 | ±5%t | +0.20/-0.05 | 0.53 | W0.30 | <0.20 | 10% | 2/3D |
6 | 159 | 3.5-6.0 | ±0.60 | ±5%t | +0.20/-0.05 | 0.60 | W0.30 | W0.20 | 10% | 2/3D |
7 | 178 | 5.0-8.0 | ±0.60 | ±7.5%t | +0.20/-0.05 | 0.53 | W0.30 | W0.20 | 10% | 2/3D |
8 | 194 | 5.0-8.0 | ±0.60 | ±7.5%t | +0.20/-0.05 | 0.6 | W0.30 | <0.20 | 10% | 2/3D |
9 | 219 | 5.0-8.0 | ±0.5%D | ±7.5%t | +0.20/-0.05 | 0.6 | W0.30 | <0.20 | 10% | 2/3D |
The mechanical property of the steel pipe |
|||
Grade | Re|./(N/mm2) Lower yield strength | FUN mm” Tensile strength | A/% Elongation after fracture |
Not less than | |||
08、10 | 195 | 315 | 22 |
15 | 215 | 355 | 20 |
20 | 235 | 390 | 19 |
Q195 | 195 | 315 | 22 |
Q215AQ215B | 215 | 335 | 22 |
Q235A、Q235B、Q235C | 235 | 375 | 20 |
Q295A、Q295B | 295 | 390 | 18 |
Q345A、Q345B、Q345C | 345 | 470 | 18 |
C250-CQ | 230 | 320 | 10 |
Special requirements of the steel pipe mechanics performance |
|||
|
Re|./(N/mm2) Lower yield strength | RJfN/ mm2) Tensile strength | A/% Elongation after fracture |
Grade | Not less than | ||
08、10 | 205 | 375 | 13 |
15 | 225 | 400 | 11 |
20 | 245 | 440 | 9 |
Q195 | 205 | 335 | 14 |
Q215A、Q215B | 225 | 355 | 13 |
Q235A、Q235B、Q235C | 245 | 390 | 9 |
Q295A、Q295B | —— | —— | —— |
Q345A、Q345B、Q345C | —— | —— | —— |