Spiral steel pipe itself has no life limit, and the service life is mainly related to the operating environment and production process. Spiral steel pipe operating environment is relatively poor In order to extend the service life, the oute.
ship pipe
ship pipe
Sizes (O.D. x T) from 6 x 1mm to 720 x 60mm
Standards :GB/T5312-1999,DIN EN 10025
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ship pipe Marine seamless pipe grade 320,360,410,460,490 mechanical properties and chemicalcomposition |
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| Standard:API,ASTM,JIS | ||||||
| CCS, DNV, LR, GL, ABS, BV, RINA, NK, GB/T5312 | ||||||
| Application: | ||||||
| Using for marine boiler, superheater and vessel | ||||||
| Grade of Products: | ||||||
| 320,360,410,460,490 | ||||||
| Dimensional Tolerance: | ||||||
| Type | O.D.(D) | Thickness(S) | ||||
| Cold drawn | O.D(mm) | Tolerance(mm) | Thickness(mm) | Tolerance(mm) | ||
| >30~50 | ±0.3 | ≤30 | ±10% | |||
| >50~219 | ±0.8% | |||||
| Hot rolling | >219 | ±1.0% | >20 | ±10% | ||
| Mechanical properties | ||||||
| Standard | Grade | Tensile strength δb (MPa) |
Yield strength δ(MPa) | Elongation δ%(%) | ||
| 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 | Grade | 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 | |
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3 Comments
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