Ship regulations:
DNV, GL, ABS, LR, BV, CCS, KR, NK
Steel grade
|
Standard |
Grade |
O.D. |
Wall Thick |
Classification Society | |||||
|
GB/T5312 |
320,360,410,460,490 |
21.3-711mm |
2-60mm |
DNV,GL,LR,BV,CCS |
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Special shaped steel pipe
Standard:
EN10210 - Hot-formed structural tubes (hollow material) of non-alloyed and fine-grained structural steels
GB/T3094-2000-Cold drawn special-shaped steel pipe
|
Standard |
Grade |
Square Pipe |
Rectangular Tube | Remark | ||||||||
| Side length |
Wall Thickness |
Long Side | Short Side |
Wall Thickness |
||||||||
|
EN10210-1 |
S235,S275,S355,S420,S460 |
40-400mm |
2.6-20mm |
50-500mm |
30-300mm |
2.6-20mm |
|
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|
GB/T3094-2000 |
10,20,Q195,Q235B,Q345B,Q345C,
|
20-280mm |
2-20mm |
20-400mm |
10-200mm |
2-20mm |
|
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Society |
Standard or usage | Steel grade | chemical composition, % | |||||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Al | Mo | V | P+S | |||
GLR |
Non alloly | GL-R 410 | ≤ 0.21 |
≤ 0.35 |
≤ 1.40 |
≤ 0.025 |
≤ 0.020 |
- | - | - | ≥0.020 | - | - | - |
| GB 18248 | 37Mn | 0.34 ~0.40 |
0.10 ~0.30 |
1.35 ~1.65 |
≤ 0.030 |
≤ 0.030 |
≤ 0.30 |
≤ 0.30 |
≤ 0.20 |
- | - | - | ≤ 0.055 |
|
| EN 10297 | 34CrMo4 | 0.30 ~0.37 |
≤ 0.40 |
0.60 ~0.90 |
≤ 0.035 |
≤ 0.035 |
0.9 ~1.20 |
- | - | - | 0.15 ~0.30 |
- | - | |
| DNV | for pressure ASTM A53/A53M | A53B | ≤ 0.30 |
- | ≤ 1.20 |
≤ 0.050 |
≤ 0.045 |
≤ 0.40 |
≤ 0.40 |
≤ 0.40 |
- | ≤ 0.15 |
≤ 0.08 |
- |
ABS |
for pressure | Grade 3 | ≤ 0.30 |
- | ≤ 1.20 |
≤ 0.050 |
≤ 0.045 |
≤ 0.40 |
≤ 0.40 |
≤ 0.40 |
- | ≤ 0.15 |
≤ 0.08 |
- |
| BV | for pressure | 410HB | ≤ 0.21 |
≤ 0.35 |
0.40 ~1.20 |
≤ 0.040 |
≤ 0.040 |
- | - | - | - | - | - | - |
| LR | for pressure | 410 | ≤ 0.21 |
≤ 0.35 |
0.40 ~1.20 |
≤ 0.045 |
≤ 0.045 |
≤ 0.25 |
≤ 0.30 |
≤ 0.30 |
- | ≤ 0.10 |
- | - |
KR |
for pressure | RST138 | ≤ 0.25 |
≤ 0.35 |
0.30 ~0.90 |
≤ 0.040 |
≤ 0.040 |
- | - | - | - | - | - | - |
| RST142 | ≤ 0.30 |
0.30 ~1.00 |
≤ 0.040 |
≤ 0.040 |
- | - | - | - | - | - | - | |||
| RST238 | ≤ 0.25 |
0.10 ~0.35 |
0.30 ~1.10 |
≤ 0.035 |
≤ 0.035 |
- | - | - | - | - | - | - | ||
| RST242 | ≤ 0.30 |
0.30 ~1.40 |
- | - | - | - | - | - | - | |||||
| RST249 | ≤ 0.33 |
0.30 ~1.50 |
- | - | - | - | - | - | - | |||||
| RST338 | ≤ 0.25 |
0.30 ~0.90 |
- | - | - | - | - | - | - | |||||
| RST342 | ≤ 0.30 |
0.30 ~1.00 |
- | - | - | - | - | - | - | |||||
| NK | for pressure | grade 1 No3/ KSTPG 42 | ≤ 0.30 |
≤ 0.35 |
0.30 ~1.00 |
≤ 0.040 |
≤ 0.040 |
- | - | - | - | - | - | - |
| CCS | for pressure | 360 | ≤ 0.17 |
≤ 0.35 |
0.40 ~0.80 |
≤ 0.040 |
≤ 0.040 |
≤ 0.25 |
≤ 0.30 |
≤ 0.30 |
≤ 0.10 |
|||
| 410 | ≤ 0.21 |
≤ 0.35 |
0.40 ~1.20 |
≤ 0.040 |
≤ 0.040 |
≤ 0.25 |
≤ 0.30 |
≤ 0.30 |
≤ 0.10 |
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| 460 | ≤ 0.22 |
≤ 0.35 |
0.80 ~1.40 |
≤ 0.040 |
≤ 0.040 |
≤ 0.25 |
≤ 0.30 |
≤ 0.30 |
≤ 0.10 |
|||||
| 490 | ≤ 0.23 |
≤ 0.35 |
0.80 ~1.50 |
≤ 0.040 |
≤ 0.040 |
≤ 0.25 |
≤ 0.30 |
≤ 0.30 |
≤ 0.10 |
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