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Oil Cracking Seamless Steel Tubes

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For furnace, heat-exchangers and pipelines in petroleum refineries.

Product Standard: GB9948

Main steel grades: 10,20,12CrMo,15CrMo,1Cr2Mo, 1Cr5Mo

StandardGradeTS(MPa)YS(MPa)Elongation(%)AK(J)Hardness(HB)Delivery Status
GB994810330~490≥205≥24//Normalized
20410~550≥245≥21≥39/Normalized
15CrMo440~640≥235≥21≥47≤170Normalized+ Tempered
1Cr2Mo≥390≥175≥22≥92≤179Normalized+ Tempered
1Cr5Mo≥390≥195≥22≥92≤187Annealed

StandardGradeChemical Composition(%)
CSiMnPSCrMoNi
GB9948100.07~0.140.17~0.370.35~0.65≤0.035≤0.035≤0.15/≤0.25
200.17~0.240.17~0.370.35~0.65≤0.035≤0.035≤0.25/≤0.25
15CrMo0.12~0.180.17~0.370.40~0.70≤0.035≤0.0350.80~1.100.40~0.55≤0.30
1Cr2Mo≤0.150.50~1.000.30~0.60≤0.035≤0.0302.15~2.850.45~0.65/
1Cr5Mo≤0.15≤0.50≤0.60≤0.035≤0.0304.00~6.000.45~0.60≤0.60
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