Seamless steel pipe specifications for ships: outer diameter 8mm-1240mm×wall thickness 1mm-200mm.
Seamless steel pipe for ships
Seamless steel pipe specifications for ships: 8-1240×1-200mm
Overview of seamless steel pipes for ships:
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 brands:
320, 360, 410, 460, 490, etc.
Mechanical properties:
| standard | Trademark | Tensile strength (MPa) | Yield strength (MPa) | Elongation(%) |
|
GB/T5312 |
320 |
320～410 |
≥195 |
≥25 |
|
360 |
360～480 |
≥215 |
≥24 |
- |
|
410 |
410～530 |
≥235 |
≥22 |
- |
|
460 |
460～580 |
≥265 |
≥21 |
- |
|
490 |
490～610 |
≥285 |
≥21 |
- |
chemical composition:
| standard |
|
chemical composition(%) |
- |
- |
- |
- |
|
C |
Si |
Mn |
P |
S |
- |
- |
|
GB/T5312 |
320 |
≤0.16 |
≤0.35 |
0.40～0.70 |
≤0.035 |
≤0.035 |
|
360 |
≤0.17 |
≤0.35 |
0.40～0.80 |
≤0.035 |
≤0.035 |
- |
|
410 |
≤0.21 |
≤0.35 |
0.40～1.20 |
≤0.035 |
≤0.035 |
- |
|
460 |
≤0.22 |
≤0.35 |
0.80～1.40 |
≤0.035 |
≤0.030 |
- |
|
490 |
≤0.23 |
≤0.35 |
0.80～1.50 |
≤0.035 |
≤0.030 |
- |
