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Petroleum cracking tube
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Petroleum cracking tube

For the manufacture of furnace tubes, heat exchanger tubes and pipes for petroleum refineries
National Service Hotline:+86-0510-86160120
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Number of views:
1000
Product serial number
Specification Range:
∮6-1100×1-100mm
Use:
For the manufacture of furnace tubes, heat exchanger tubes and pipes for petroleum refineries
Main Material:

GB9948 (10, 20, Q345, 15CrMo, etc.)

Quantity
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+
Stock:
0
Product description
Parameters

● Standard

GB9948-2013 Main steel grades: 10、20、12CrMo、15CrMo

● Uses

For the manufacture of furnace tubes, heat exchanger tubes and pipes for petroleum refineries

Size deviation

Steel Tube Types

Tube size

Allowable Deviation

Hot rolled tube

Outer diameter ≤ 159 ± 1.00%
> 159 ± 1.25%
Wall thickness ≤ 20 ± 12.5%
> 20 ± 10.0%
Cold-drawn tube 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) Tensile 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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