round carbon steel tubing
Seamless steel pipe specifications for ships: outer diameter 8mm-1240mm×wall thickness 1mm-200mm.
Seamless steel pipe specifications for ships: 8-1240×1-200mm
standard:
China Classification Society Materials and Welding Specifications-China Classification Society (CCS)
Det Norske Veritas (DNV) Specifications - Det Norske Veritas (DNV)
Lloyd's Register of Shipping (LR) Specifications - Lloyd's Register of Shipping (LR)
Germanischer Lloyd (GL) specifications - Germanischer Lloyd (GL)
American Bureau of Shipping (ABS) Specifications - American Bureau of Shipping (ABS)
Bureau Veritas (BV) specifications - Bureau Veritas (BV)
Italian Register of Shipping (RINA) specifications - Italian Register of Shipping (RINA)
Japan Shipping Classification Society (NK) specifications - Japan Shipping Classification Society (NK)
GB/T5312--China National Standard
use:
Used for the manufacture of seamless steel pipes for marine boilers and superheaters and grade I and II pressure piping systems.
Mainly produced steel pipe grades: 320, 360, 410, 460, 490, etc.
Seamless steel tube and pipe for ship building usage and Chemical compisition(%)
| Society | Standard or usage | Steel grade | C | Si | Mn | P | S | Cr | Ni | Cu | Al | Mo | V | P+S |
| GLR | Non alloly | GL-R 410 | ≤0.21 | ≤0.35 | ≤1.4 | ≤0.025 | ≤0.02 | - | - | - | ≥0.020 | - | - | - |
| GB 18248 | 37Mn | 0.34~0.40 | 0.1~0.30 | 1.35~1.65 | ≤0.03 | ≤0.03 | ≤0.3 | ≤0.3 | ≤0.2 | - | - | - | ≤0.055 | |
| EN 10297 | 34CrMo4 | 0.3~0.37 | ≤0.4 | 0.6~0.90 | ≤0.035 | ≤0.035 | 0.9~1.20 | - | - | - | 0.15~0.30 | - | - | |
| DNV | for pressure ASTM A53/A53M | A53B | ≤0.3 | - | ≤1.2 | ≤0.05 | ≤0.045 | ≤0.4 | ≤0.4 | ≤0.4 | - | ≤ | ≤ | - |
| 0.15 | 0.08 | |||||||||||||
| ABS | for pressure | Grade 3 | ≤0.3 | - | ≤1.2 | ≤0.05 | ≤0.045 | ≤0.4 | ≤0.4 | ≤0.4 | - | ≤0.15 | ≤0.08 | - |
| BV | for pressure | 410HB | ≤0.21 | ≤0.35 | 0.4~1.20 | ≤0.04 | ≤0.04 | - | - | - | - | - | - | - |
| LR | for pressure | 410 | ≤0.21 | ≤0.35 | 0.4~1.20 | ≤0.045 | ≤0.045 | ≤0.25 | ≤0.3 | ≤0.3 | - | ≤ | - | - |
| KR | for pressure | RST138 | ≤0.25 | ≤0.35 | 0.3~0.90 | ≤0.04 | ≤0.04 | - | - | - | - | - | - | - |
| RST142 | ≤0.3 | 0.3~1.00 | ≤0.04 | ≤0.04 | - | - | - | - | - | - | - | |||
| RST238 | ≤0.25 | 0.1~0.35 | 0.3~1.10 | ≤0.035 | ≤0.035 | - | - | - | - | - | - | - | ||
| RST242 | ≤0.3 | 0.3~1.40 | - | - | - | - | - | - | - | |||||
| RST249 | ≤0.33 | 0.3~1.50 | - | - | - | - | - | - | - | |||||
| RST338 | ≤0.25 | 0.3~0.90 | - | - | - | - | - | - | - | |||||
| RST342 | ≤0.3 | 0.3~1.00 | - | - | - | - | - | - | - | |||||
| NK | for pressure | grade 1 No3/ KSTPG 42 | ≤0.3 | ≤0.35 | 0.3~1.00 | ≤0.04 | ≤0.04 | - | - | - | - | - | - | - |
| CCS | for pressure | 360 | ≤0.17 | ≤0.35 | 0.4~0.80 | ≤0.04 | ≤0.04 | ≤0.25 | ≤0.3 | ≤0.3 | ≤0.10 | |||
| 410 | ≤0.21 | ≤0.35 | 0.4~1.20 | ≤0.04 | ≤0.04 | ≤0.25 | ≤0.3 | ≤0.3 | ≤0.10 | |||||
| 460 | ≤0.22 | ≤0.35 | 0.8~1.40 | ≤0.04 | ≤0.04 | ≤0.25 | ≤0.3 | ≤0.3 | ≤0.10 | |||||
| 490 | ≤0.23 | ≤0.35 | 0.8~1.50 | ≤0.04 | ≤0.04 | ≤0.25 | ≤0.3 | ≤0.3 | ≤0.1 |
Marine Seamless Steel Pipe
Note：
residual elements:Cr≤0.25％, Mo≤0.10％, Ni≤0.30％, Cu≤0.30％aggregate≤0.70％
Appication:
Seamless steel tubes for manufacturing marine boilers and ovemeaters as we as pressure pipes opf grade I and Ⅱ．
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