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GB9948 Petroleum Cracking Seamless Steel Tubes 10#20# 12CrMo 15CrMo 12Cr1MoV 07Cr19Ni10

Categories Seamless Steel Tube
Brand Name: Torich
Model Number: GB 9948
Certification: ISO9001:2008,ISO14001:2008
Place of Origin: Zhejiang,China
MOQ: 5T
Price: USD500-1500/Ton
Payment Terms: D/A, L/C, D/P, T/T, Western Union, MoneyGram
Supply Ability: 60000Ton Per Year
Delivery Time: 30 Work days
Packaging Details: packing in wooden boxes or in hexagonal bundles
Product name: GB9948 10#20# 12CrMo 15CrMo 12Cr1MoV 07Cr19Ni10 Petroleum Cracking Seamless Steel Tubes
Standard: GB EN ASTM JIS DIN
Surface: oiled
Material: 10#20#12CrMo15CrMo12Cr5Mo-NT022Cr17Ni12Mo2
Usage: Petroleum Cracking
Shape: Round
OD: 5-600mm
WT: 0.5-50mm
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GB9948 Petroleum Cracking Seamless Steel Tubes 10#20# 12CrMo 15CrMo 12Cr1MoV 07Cr19Ni10

Product name: GB 9948 Material10#20# 12CrMo 15CrMo 12Cr1MoV Petroleum Cracking Seamless Steel Tubes


Out Diameter: 3~500mm


Wall Thickness: 0.5~50mm


Application: It is used for the seamless steel tubes for furnace,heat exchangers, Petroleum Cracking etc.


Table1 The Tolerances of Outer Diameter and Wall Thickness Unit:mm

Sort CodeManufacuring MethodNominal SizeTolerances
Common LevelHigh Level
W-HHot Rolling (Extrusion)Outer Diameter D≤54±0.50±0.30
>54~325±1%D±0.75%D
>325±1%D-
Wall Thicknass S≤20

+15%S

-10%S

±10%S
>20

+12.5%S

-10%S

±10%S
Hot ExpandOuter Diameter DAll±1%D
Wall Thicknass SAll±15%S
W-CCold Drawn(Rolling)Outer Diameter D≤25.4±0.15
>25.4~40±0.20
>40~50±0.25
>50~60±0.30
>60±0.75%D±0.5%D
Wall Thicknass S≤3.0±0.3±0.2
>3.0±10%S±7.5%S

Table2 The Tolerance of Minimum Wall Thickness Unit :mm

Sort CodeManufacturing MethodMinimum Wall Thickness SminTolerance
Common LevelHigh Level
W-HHot Rolling(Extrusion)≤4.0

+0.90

0

+0.70

0

>4.0

+25%Smin

0

+22%Smin

0

W-CCold Drawn(Rolling)≤3.0

+0.6

0

+0.4

0

>3.0

+20%Smin

0

+15%Smin

0

Table3 Steel grade and chemical composition

Steel gradeChemical composition %
CSiMnCrMoNiNbTiVCuPS
10

0.07~

0.13

0.17~

0.37

0.35~

0.65

≤0.15≤0.15

0.25

≤0.08≤0.200.0250.015
20

0.17~

0.23

0.17~

0.37

0.35~

0.65

≤0.25≤0.15

0.25

≤0.08≤0.200.0250.015
12CrMo

0.08~

0.15

0.17~

0.37

0.40~

0.70

0.40~

0.70

0.40~

0.55

0.30

≤0.200.0250.015
15CrMo

0.12~

0.018

0.17~

0.37

0.40~

0.70

0.80~

1.10

0.40~

0.55

0.30

≤0.200.0250.015
12CrlMo

0.08~

0.15

0.50~

1.00

0.30~

0.60

1.00~

1.50

0.45~

0.65

0.30

≤0.200.0250.015
12CrlMoV

0.08~

0.15

0.17~

0.37

0.40~

0.70

0.90~

1.20

0.25~

0.35

0.30

0.15~

0.30

≤0.200.0250.015
12Cr2Mo

0.08~

0.15

≤0.50

0.40~

0.60

2.00~

2.50

0.90~

1.13

0.30

≤0.200.0250.015

12Cr5MoI

12Cr5MoNT

0.15

≤0.50

0.30~

0.60

4.00~

6.00

0.45~

0.60

0.60

≤0.200.0250.015

12Cr9MoI

12Cr9MoNT

0.15

0.25~

1.00

0.30~

0.60

8.00~

10.00

0.90~

1.10

0.60

≤0.200.0250.015
07Cr19Ni10

0.04~

0.10

1.00

≤2.00

18.00~

20.00

8.00~

11.00

0.0300.015
07Cr18Ni11Nb

0.04~

0.10

1.00

≤2.00

17.00~

19.00

9.00~

12.00

8C~

1.10

0.0300.015
07Cr19Ni11NTi

0.04~

0.10

≤0.75≤2.00

17.00~

20.00

9.00~

13.00

4C~

0.60

0.0300.015
022Cr17Ni12Mo2

0.30

≤1.00≤2.00

16.00~

18.00

2.00~

3.00

10.00~

14.00

0.0300.015

Table4 Heat Treatment Standard

Steel GradeHeat Treatment Standard
10aNormalizing;At Temperature 880℃~940℃
20aNormalizing:At Temperature 880℃~940℃
12CrMob

Normalizing:At Temperature 900℃~960℃

Tempering:At Temperature 670℃~730℃

15CrMob

Normalizing:At Temperature 900℃~960℃

Tempering:At Temperature 680℃~730℃

12Cr1Mob

Normalizing:At Temperature 900℃~960℃

Tempering:At Temperature 680℃~750℃

12Cr1MoVb

S≤30mm:Normalizing:At Temperature 980℃~1020℃

Tempering:At Temperature 720℃~760℃

S>30mm:Quenching:At Temperature 950℃~990℃

Tempering:At Temperature 720℃~760℃

Or Normalizing:At Temperature 980℃~1020℃

(rapid cooling after Normalizing)

Tempering:At Temperature 720℃~760℃

12Cr2Mob

S≤30mm:Normalizing:At Temperature 900℃~960℃

Tempering:At Temperature 700℃~750℃

S>30mm:Quenching:At Temperature ≥ 900℃

Tempering:At Temperature 700℃~750℃

Or Normalizing:At Temperature 900℃~960℃

(rapid cooling after Normalizing)

Tempering:At Temperature 700℃~750℃

12Cr5MoIFull Annealing or isothermal annealing
12Cr5MoNT

Normalizing:At Temperature 930℃~980℃

Tempering:At Temperature 730℃~770℃

12Cr9MoIFull Annealing or isothermal annealing
12Cr9MoNT

Normalizing:At Temperature 890℃~950℃

Tempering:At Temperature 720℃~800℃

07Cr19Ni10

Treatment with solid solving:At Temperature ≥ 1040℃

(rapid cooling after Treatment)


07Cr18Ni11Nb

Treatment with solid solving:

For Hot Rolled Tube At Temperature ≥ 1050℃

For Cold Drawn(rolled)Tube At Temperature ≥ 1100℃

(rapid cooling after Treatment)


07Cr19Ni11Ti

Treatment with solid solving:

For Hot Rolled Tube At Temperature ≥ 1050℃

For Cold Drawn(rolled)Tube At Temperature ≥ 1100℃

(rapid cooling after Treatment)



Table5 Mechanical Property

Steel Grade

Tensile

Strength

Rm/MPa

Lower yield strength Rp0.2/MPaElongation A/Shock absorption KV2/JBrinell hardness
Longitudinal directionTransverseLongitudinal directionTransverse
10335~47520525234027-
20410~55024524224027-
12CrMo410~56020521194027156HBW
15CrMo440~64029521194027170HBW
12Cr1Mo415~56020522204027163HBW
12Cr2MoV470~64025521194027179HBW
12Cr2Mo450~60028022204027163HBW
12Cr5MoI415~59020522204027163HBW
12Cr5MoNT480~64028020184027-
12Cr9MoI460~64021020184027179HBW
12Cr9MoNT590~74039018164027-
07Cr19Ni10≥52020535--187HBW
07Cr18Ni11Nb≥52020535--187HBW
07Cr19Ni11Ti≥52020535--187HBW
022Cr17Ni12Mo2≥48517035--187HBW
If the wall thickness of the tube is less than 5mm, doesn’t have to do the hardness test

Table6 Impact energy absorption attenuation factor of small sample

SpecimenSpecimen size(heightXwidth)mmAttenuation factor
Standard sample10X101.00
Small sample10X7.50.75
Small sample10X50.50

Table7 Diameter flaring rate of steel tubes

SteelDiameter flaring rate of steel tubes/%
ID/OD
≤0.6>0.6~0.8>0.8
Carbon structural steel101217
Alloy structural steel81015
Stainless(heat resistance)steel121520

Table8 Testing items and sampling quantity of steel tubes

NumberTesting itemsSampling quantity
1Chemical composition1 sample from each furnace
2Tensile test1 sample from each of two steel tubes on each batch
3Hardness test3 samples taken on 2 steel tubes on each batch
4Impact testAll
5Hydraulic test1 sample from each of two steel tubes on each batch
6Flattening test2 samples taken on 2 steel tubes on each batch
7Bending test1 sample taken on 2 steel tubes on each furnace
8Flaring test2 samples taken on 2 steel tubes on each batch
9Macroscopic examination1 sample taken on 2 steel tubes on each furnace
10Non-metallic inclusions1 sample taken on 2 steel tubes on each furnace
11Eddy current testingAll
12Magnetic flux leakage detectionAll
13Ultrasonic testingAll
14Intergranular corrosion test1 sample from each of two steel tubes on each batch

Table A.1 Comparison Table of Similar Steel Grade

No.GBSimilar Steel Grade
ISOENASTM/ASMEJIS
110-P195GHASTB 340
220PH26P235GHA-1,BSTB 410
312CrMo--T2/P2STBA 20
415CrMo13CrMo4-513CrMo4-5T12/P12STBA 22
512Cr1Mo-10CrMo5-5T11/P11STBA 23
612Cr1MoV----
712Cr2Mo10CrMo9-1010CrMo9-10T22/P22STBA 24
812Cr5Mo-IX11CrMo9-1TAX11CrMo5+IT5/P5STBA 25
912Cr5Mo-NT-X11CrMo5+NTT5/P5STBA 25
1012Cr9Mo-IX11CrMo9-1TAX11CrMo9-1+IT9/P9STBA 26
1112Cr9Mo-NT-X11CrMo9-1+NTT9/P9STBA 26
1207Cr19Ni10X7CrNi18-9X6CrNi18-10TP304HSUS 304H TB
1307Cr18Ni11NbX7CrNiNb18-10X7CrNiNb18-10TP347HSUS 347H TB
1407Cr19Ni11Ti-X6CrNiTi18-10TP321HSUS 321H TB
15022Cr17Ni12Mo2-X2CrNiMo17-12-2TP316LSUS 316L TB

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