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

Basic Information
Place of Origin: Zhejiang,China
Brand Name: Torich
Certification: ISO9001:2008,ISO14001:2008
Model Number: GB 9948
Minimum Order Quantity: 5T
Price: negotiable
Packaging Details: packing in wooden boxes or in hexagonal bundles
Delivery Time: 30 Work days
Payment Terms: D/A, L/C, D/P, T/T, Western Union, MoneyGram
Supply Ability: 60000Ton Per Year
Detail Information
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
High Light:

seamless steel pipe

,

precision stainless steel tubing


Product Description

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 Code Manufacuring Method Nominal Size Tolerances
Common Level High Level
W-H Hot 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 Expand Outer Diameter D All ±1%D
Wall Thicknass S All ±15%S
W-C Cold 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 Code Manufacturing Method Minimum Wall Thickness Smin Tolerance
Common Level High Level
W-H Hot Rolling(Extrusion) ≤4.0

+0.90

0

+0.70

0

>4.0

+25%Smin

0

+22%Smin

0

W-C Cold 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 grade Chemical composition %
C Si Mn Cr Mo Ni Nb Ti V Cu P S
10

0.07~

0.13

0.17~

0.37

0.35~

0.65

≤0.15 ≤0.15

0.25

≤0.08 ≤0.20 0.025 0.015
20

0.17~

0.23

0.17~

0.37

0.35~

0.65

≤0.25 ≤0.15

0.25

≤0.08 ≤0.20 0.025 0.015
12CrMo

0.08~

0.15

0.17~

0.37

0.40~

0.70

0.40~

0.70

0.40~

0.55

0.30

≤0.20 0.025 0.015
15CrMo

0.12~

0.018

0.17~

0.37

0.40~

0.70

0.80~

1.10

0.40~

0.55

0.30

≤0.20 0.025 0.015
12CrlMo

0.08~

0.15

0.50~

1.00

0.30~

0.60

1.00~

1.50

0.45~

0.65

0.30

≤0.20 0.025 0.015
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

≤0.20 0.025 0.015
12Cr2Mo

0.08~

0.15

≤0.50

0.40~

0.60

2.00~

2.50

0.90~

1.13

0.30

≤0.20 0.025 0.015

12Cr5MoI

12Cr5MoNT

0.15

≤0.50

0.30~

0.60

4.00~

6.00

0.45~

0.60

0.60

≤0.20 0.025 0.015

12Cr9MoI

12Cr9MoNT

0.15

0.25~

1.00

0.30~

0.60

8.00~

10.00

0.90~

1.10

0.60

≤0.20 0.025 0.015
07Cr19Ni10

0.04~

0.10

1.00

≤2.00

18.00~

20.00

8.00~

11.00

0.030 0.015
07Cr18Ni11Nb

0.04~

0.10

1.00

≤2.00

17.00~

19.00

9.00~

12.00

8C~

1.10

0.030 0.015
07Cr19Ni11NTi

0.04~

0.10

≤0.75 ≤2.00

17.00~

20.00

9.00~

13.00

4C~

0.60

0.030 0.015
022Cr17Ni12Mo2

0.30

≤1.00 ≤2.00

16.00~

18.00

2.00~

3.00

10.00~

14.00

0.030 0.015

 

Table4 Heat Treatment Standard

Steel Grade Heat Treatment Standard
10a Normalizing;At Temperature 880℃~940℃
20a Normalizing: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℃

12Cr5MoI Full Annealing or isothermal annealing
12Cr5MoNT

Normalizing:At Temperature 930℃~980℃

Tempering:At Temperature 730℃~770℃

12Cr9MoI Full 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/MPa Elongation A/ Shock absorption KV2/J Brinell hardness
Longitudinal direction Transverse Longitudinal direction Transverse
10 335~475 205 25 23 40 27 -
20 410~550 245 24 22 40 27 -
12CrMo 410~560 205 21 19 40 27 156HBW
15CrMo 440~640 295 21 19 40 27 170HBW
12Cr1Mo 415~560 205 22 20 40 27 163HBW
12Cr2MoV 470~640 255 21 19 40 27 179HBW
12Cr2Mo 450~600 280 22 20 40 27 163HBW
12Cr5MoI 415~590 205 22 20 40 27 163HBW
12Cr5MoNT 480~640 280 20 18 40 27 -
12Cr9MoI 460~640 210 20 18 40 27 179HBW
12Cr9MoNT 590~740 390 18 16 40 27 -
07Cr19Ni10 ≥520 205 35 - - 187HBW
07Cr18Ni11Nb ≥520 205 35 - - 187HBW
07Cr19Ni11Ti ≥520 205 35 - - 187HBW
022Cr17Ni12Mo2 ≥485 170 35 - - 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

Specimen Specimen size(heightXwidth)mm Attenuation factor
Standard sample 10X10 1.00
Small sample 10X7.5 0.75
Small sample 10X5 0.50

 

 

 

Table7 Diameter flaring rate of steel tubes

Steel Diameter flaring rate of steel tubes/%
ID/OD
≤0.6 >0.6~0.8 >0.8
Carbon structural steel 10 12 17
Alloy structural steel 8 10 15
Stainless(heat resistance)steel 12 15 20
 

 

Table8 Testing items and sampling quantity of steel tubes

Number Testing items Sampling quantity
1 Chemical composition 1 sample from each furnace
2 Tensile test 1 sample from each of two steel tubes on each batch
3 Hardness test 3 samples taken on 2 steel tubes on each batch
4 Impact test All
5 Hydraulic test 1 sample from each of two steel tubes on each batch
6 Flattening test 2 samples taken on 2 steel tubes on each batch
7 Bending test 1 sample taken on 2 steel tubes on each furnace
8 Flaring test 2 samples taken on 2 steel tubes on each batch
9 Macroscopic examination 1 sample taken on 2 steel tubes on each furnace
10 Non-metallic inclusions 1 sample taken on 2 steel tubes on each furnace
11 Eddy current testing All
12 Magnetic flux leakage detection All
13 Ultrasonic testing All
14 Intergranular corrosion test 1 sample from each of two steel tubes on each batch

 

 

 

                                    Table A.1 Comparison Table of Similar Steel Grade

No. GB Similar Steel Grade
ISO EN ASTM/ASME JIS
1 10 - P195GH A STB 340
2 20 PH26 P235GH A-1,B STB 410
3 12CrMo - - T2/P2 STBA 20
4 15CrMo 13CrMo4-5 13CrMo4-5 T12/P12 STBA 22
5 12Cr1Mo - 10CrMo5-5 T11/P11 STBA 23
6 12Cr1MoV - - - -
7 12Cr2Mo 10CrMo9-10 10CrMo9-10 T22/P22 STBA 24
8 12Cr5Mo-I X11CrMo9-1TA X11CrMo5+I T5/P5 STBA 25
9 12Cr5Mo-NT - X11CrMo5+NT T5/P5 STBA 25
10 12Cr9Mo-I X11CrMo9-1TA X11CrMo9-1+I T9/P9 STBA 26
11 12Cr9Mo-NT - X11CrMo9-1+NT T9/P9 STBA 26
12 07Cr19Ni10 X7CrNi18-9 X6CrNi18-10 TP304H SUS 304H TB
13 07Cr18Ni11Nb X7CrNiNb18-10 X7CrNiNb18-10 TP347H SUS 347H TB
14 07Cr19Ni11Ti - X6CrNiTi18-10 TP321H SUS 321H TB
15 022Cr17Ni12Mo2 - X2CrNiMo17-12-2 TP316L SUS 316L TB
 

    GB9948 Petroleum Cracking Seamless Steel Tubes 10#20# 12CrMo 15CrMo 12Cr1MoV 07Cr19Ni10 0       GB9948 Petroleum Cracking Seamless Steel Tubes 10#20# 12CrMo 15CrMo 12Cr1MoV 07Cr19Ni10 1

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