Standard:EN10297-1 Seamless circular steel tubes for mechanical and general engineering purposes
- Technical delivery conditions Non-alloy and alloy steel tubes
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Seamless circular tubes made of non-alloy and alloy steels for mechanical and gneral engineering purposes.
Seamless circular steel Delivery condition:
Normalizin rolling process or normalized by heat treatment in a furnance.
Steel pipe manufacture method:
The tubes are manufactured by Seamless Cold Drawn or Seamless Cold Rolling.
Basis information:
Avaliable size: O.D.: 6-168mm W.T.: 1-30mm L:max12000mm
Material: belong to fine grain steel E235, E275, E315, E355, E470
C15, C22, 38Mn6, 41Cr4,
25CrMo4, 30CrMo4, 34CrMo4, 42CrMo4
Chemical component as below.
| Steel
Grade | C | Si | Mn | P | S | Cr | Mo | Ni | Other elements |
| Steel Name | Steel Number | min | max | min | max | min | max | max | max | min | max | min | max | min | max |
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| E235 | 1.0308 |
| 0.17 | - | 0.35 | - | 1.20 | 0.030 | 0.035 |
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| E275 | 1.0225 |
| 0.21 | - | 0.35 | - | 1.40 | 0.030 | 0.035 |
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| E315 | 1.0236 |
| 0.21 | - | 0.30 | - | 1.50 | 0.030 | 0.035 |
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| E355 b | 1.0580 |
| 0.22 | - | 0.55 | - | 1.60 | 0.030 | 0.035 |
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| E470 | 1.0536 | 0.16 | 0.22 | 0.10 | 0.50 | 1.30 | 1.70 | 0.030 | 0.035 |
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Al min 0.010, N max. 0.020, Nb Max.0.07,V 0.08/0.15
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| C22E | 1.1151 | 0.17 | 0.24 | - | 0.40 | 0.40 | 0.70 | 0.035 | 0.035 |
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| C35E | 1.1181 | 0.32 | 0.39 | - | 0.40 | 0.50 | 0.80 | 0.035 | 0.035 |
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| C45E | 1.1191 | 0.42 | 0.50 | - | 0.40 | 0.50 | 0.80 | 0.035 | 0.035 |
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| C60E | 1.1221 | 0.57 | 0.65 | - | 0.40 | 0.60 | 0.90 | 0.035 | 0.035 |
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| 25CrMo4 | 1.7218 | 0.22 | 0.29 |
| 0.40 | 0.60 | 0.90 | 0.035 | 0.035 | 0.90 | 1.20 | 0.15 | 0.30 | - | - |
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| 30CrMo4 | 1.7216 | 0.27 | 0.34 |
| 0.35 | 0.35 | 0.60 | 0.035 | 0.035 | 0.80 | 1.15 | 0.15 | 0.30 | - | - |
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| 34CrMo4 | 1.7220 | 0.30 | 0.37 |
| 0.40 | 0.60 | 0.90 | 0.035 | 0.035 | 0.90 | 1.20 | 0.15 | 0.30 | - | - |
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| 42CrMo4 | 1.7225 | 0.38 | 0.45 |
| 0.40 | 0.60 | 0.90 | 0.035 | 0.035 | 0.90 | 1.20 | 0.15 | 0.30 | - | - |
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| Steel Grade |
Delivery Conditiion
| Minimum tensile properties |
| Steel Name | Steel Number |
Yield Strength(ReH) Mpa b
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Tensile Strength(Rm) Mpa
| Elongation A% |
| For T in mm | For T in mm | l | t |
| ≤16 | ＞16 | ＞40 | ＞65 | ＞80 | ≤16 | ＞16 | ＞40 | ＞65 |
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≤40
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≤65
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≤80
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≤100
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≤40
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≤65
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≤100
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| E235 |
1.0 308
| +ARora+N | 235 | 225 | 215 | 205 | 195 | 360 | 360 | 360 | 340 | 25 | 23 |
| E275 |
1.0 225
| +AR ora+N | 275 | 265 | 255 | 245 | 235 | 410 | 410 | 410 | 380 | 22 | 20 |
| E315 |
1.0 236
| +ARora+N | 315 | 305 | 295 | 280 | 270 | 450 | 450 | 450 | 420 | 21 | 19 |
| E355 |
1.0 580
| +AR ora+N | 355 | 345 | 335 | 315 | 295 | 490 | 490 | 490 | 470 | 20 | 18 |
| E470 |
1.0 536
| +AR | 470 | 430 | - | - | - | 650 | 600 | - | - | 17 | 15 |
| Steel Grade | Minimum tensile properties |
| Steel name | Steel number |
Yeld strength(ReH) MPa
|
Tensile strength(Rm) MPa
|
Elongation A %
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| For T in mm | For T in mm | For T in mm |
| ≤16 | ＞16 | ＞40 | ≤16 | ＞16 | ＞40 | ≤16 | ＞16 | ＞40 |
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≤40
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≤80
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≤40
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≤80
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≤40
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≤80
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| l | t | l | t | l | t |
| C22E | 1.151 | 240 | 210 | 210 | 430 | 410 | 410 | 24 | 22 | 25 | 23 | 25 | 23 |
| C35E | 1.1181 | 300 | 270 | 270 | 550 | 520 | 520 | 18 | 16 | 19 | 17 | 19 | 17 |
| C45E | 1.1191 | 340 | 305 | 305 | 620 | 580 | 580 | 14 | 12 | 16 | 14 | 16 | 14 |
| C60E | 1.1221 | 390 | 350 | 340 | 710 | 670 | 670 | 10 | 8 | 11 | 9 | 11 | 9 |
| Steel Grade | Minimum tensile properties |
| Steel Name | Steel Number |
Yield strength(ReH) Mpa
|
Tensile strength(Rm) Mpa
| Elong ation A % |
| For T in mm | For T in mm | For T in mm |
| ≤8 | ＞8 | ＞20 | ＞50 | ≤8 | ＞8 | ＞20 | ＞50 | ≤8 | ＞8 | ＞20 | ＞50 |
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≤20
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≤50
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≤80
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≤20
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≤50
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≤80
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≤20
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≤50
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≤50
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| l | t | l | t | l | t | l | t |
| C22E | 1.1151 | 340 | 290 | 270 | 260 | 500 | 470 | 440 | 420 | 20 | 18 | 22 | 20 | 22 | 20 | 22 | 20 |
| C35E | 1.1181 | 430 | 380 | 320 | 290 | 630 | 600 | 550 | 500 | 17 | 15 | 19 | 17 | 20 | 18 | 20 | 18 |
| C45E | 1.1191 | 490 | 430 | 370 | 340 | 700 | 650 | 630 | 600 | 14 | 12 | 16 | 14 | 17 | 15 | 17 | 15 |
| C60E | 1.1221 | 580 | 520 | 450 | 420 | 850 | 800 | 750 | 710 | 11 | 9 | 13 | 11 | 14 | 12 | 14 | 12 |
| Steel Grade | Minimum tensile properties |
| Steel name | Steel nu
mber | Yield
strength(ReH)
Mpa | Tensile
strength(Rm)
Mpa | A
% |
| For T in mm | For T in mm | For T in mm |
| ≤
8 | ＞
8 | ＞
20 | ＞
50 | ≤8 | ＞
8 | ＞
20 | ＞
50 | ≤8 | ＞8 | ＞
20 | ＞
50 |
|
| ≤20 | ≤50 | ≤80 |
| ≤20 | ≤50 | ≤80 |
| ≤20 | ≤
50 | ≤
80 |
| l | t | l | t | l | t | l | t |
| 25CrMo4 | 1.7218 | 700 | 600 | 450 | 400 | 900 | 800 | 700 | 650 | 12 | 10 | 14 | 12 | 15 | 13 | 16 | 14 |
| 30CrMo4 | 1.7216 | 750 | 630 | 520 | 480 | 950 | 850 | 750 | 700 | 12 | 10 | 13 | 11 | 14 | 12 | 15 | 13 |
| 34CrMo4 | 1.7220 | 800 | 650 | 550 | 500 | 1000 | 900 | 800 | 750 | 11 | 9 | 12 | 10 | 14 | 12 | 15 | 13 |
| 42CrMo4 | 1.7225 | 900 | 750 | 650 | 550 | 1100 | 1000 | 900 | 800 | 10 | 8 | 11 | 9 | 12 | 10 | 13 | 11 |
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