Petroleum cracking tube
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Boilers, heat exchangers, and fluid transportation pipelines used in petroleum refineries. GB9948-2013 Main steel grades: 10, 20, 12CrMo, 15CrMo
Product name：
Martensitic precipitation hardening stainless steel
Material：
FV520B
Warehouse：
Tianjin
Surface treatment：
Polishing/Grinding/brushing/pickling/passivation/electroplating
Category：
Keyword：
Petroleum cracking tube
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Details description
Dimensional Deviation
Steel Pipe Type |
Steel Pipe Dimensions |
Allowable Deviation |
|
Hot-rolled Pipe |
Outer Diameter |
≤ 159 |
± 1.00% |
> 159 |
± 1.25% |
||
Wall Thickness |
≤ 20 |
± 12.5% |
|
> 20 |
± 10.0% |
||
Cold Drawn Pipe |
Outer Diameter |
≤ 30 |
± 0.20 |
30~50 |
± 0.30 |
||
> 50 |
± 0.8% |
||
Wall Thickness |
≤ 3 |
+ 12% - 10% |
|
> 3 |
± 10% |
||
Chemical Composition, Mechanical Properties
Standard |
Steel Grade |
Chemical Composition (%) |
||||||
C |
Si |
Mn |
Ni |
Cr |
Mo |
P.S |
||
GB9948 |
10 |
0.17 ～ 0.14 |
0.17 ～ 0.37 |
0.35 ～ 0.65 |
≤ 0.25 |
≤ 0.15 |
/ |
≤ 0.035 |
20 |
0.17 ～ 0.24 |
0.17 ～ 0.37 |
0.35 ～ 0.65 |
≤ 0.25 |
≤ 0.25 |
/ |
≤ 0.035 |
|
12CrMo |
0.08 ～ 0.15 |
0.17 ～ 0.37 |
0.40 ～ 0.70 |
≤ 0.30 |
0.40 ～ 0.70 |
0.40 ～ 0.55 |
≤ 0.035 |
|
15CrMo |
0.12 ～ 0.18 |
0.17 ～ 0.37 |
0.40 ～ 0.70 |
≤ 0.30 |
0.80 ～ 1.10 |
0.40 ～ 0.55 |
≤ 0.035 |
|
Mechanical Properties |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
|||||
10 |
330 ～ 490 |
≥ 205 |
≥ 24 |
|||||
20 |
410 ～ 550 |
≥ 245 |
≥ 21 |
|||||
12CrMo |
410 ～ 560 |
≥ 205 |
≥ 21 |
|||||
15CrMo |
440 ～ 640 |
≥ 235 |
≥ 21 |
|||||
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