• Seamless Steel Pipe For Petroleum Cracking

Seamless Steel Pipe For Petroleum Cracking

Application: Boiler, heat exchanger and conveying fluid pipeline for oil refinery.

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  • Introduction
  • Specification
  • Application
  • Inquiry

Introduction:

Execution standard: GB9948 (2006) --- seamless steel pipe for petroleum cracking (GB)
GB9948 is a seamless steel pipe (GB9948-88) for petroleum cracking, which is suitable for furnace pipe, heat exchanger and pipe seamless steel pipe.
Boiler, heat exchanger and conveying fluid pipeline for oil refinery. Its representative material is 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb, etc.

Specification:

 

Standard Grade Chemical   Composition(%)
    C Si Mn P S
GB9948 10 0.07~0.13 0.17~0.37 0.35~0.65 ≤0.030 ≤0.020
20 0.17~0.23 0.17~0.37 0.35~0.65 ≤0.030 ≤0.020
12CrMo 0.08~0.15 0.17~0.37 0.40~0.70 ≤0.030 ≤0.020
15CrMo 0.12~0.18 0.17~0.37 0.40~0.70 ≤0.030 ≤0.020
1Cr5Mo ≤0.15 ≤0.50 ≤0.60 ≤0.030 ≤0.020
Standard Grade Chemical   Composition(%)
    Cr Mo Ni Nb  
GB9948 10          
20          
12CrMo 0.40~0.70 0.40~0.55      
15CrMo 0.80~1.10 0.40~0.55      
1Cr5Mo 4.00~6.00 0.45~0.60 ≤0.60    

10 of the residual contents:Ni≤0.25%、Cr≤0.15%、Cu≤0.20%

 

20 of the residual contents:Ni≤0.25%、Cr≤0.25%、Cu≤0.20%、Mo≤0.15%、V≤0.08%

The residual contents:Ni≤0.30%、Cr≤0.30%、Cu≤0.20%

 
Standard Grade Tensile Strength(MPa) Yield Strength(MPa) Elongation(%) Impact work(J) Hardness  (HB)
 

 

 

 

 

GB9948

10 335~475 ≥205 ≥25 ≥35  
20 410~550 ≥245 ≥24 ≥35  
12CrMo 410~560 ≥320 ≥21 ≥35 156
15CrMo 440~640 ≥295 ≥21 ≥35 170
1Cr5Mo 390~590 ≥235 ≥22 ≥35 187

Application:

 Boiler, heat exchanger and conveying fluid pipeline for oil refinery.

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