Company Details
  • Torich International Co.,Ltd--The Steel Tube Maker

  •  [Zhejiang,China]
  • Business Type:Distributor/Wholesaler , Manufacturer , Service , Trade Company
  • Main Mark: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide
  • Exporter:31% - 40%
  • Certs:GB, ISO9001, ISO14001
  • Description:GB 9948 Seamless Steel Tubes,12CrMo 15CrMo 12Cr1MoV 07Cr19Ni10,Petroleum Cracking Seamless Steel Tubes
Torich International Co.,Ltd--The Steel Tube Maker GB 9948 Seamless Steel Tubes,12CrMo 15CrMo 12Cr1MoV 07Cr19Ni10,Petroleum Cracking Seamless Steel Tubes
Home > Products > Seamless Steel Tubes > GB 9948 Petroleum Cracking Seamless Steel Tubes

GB 9948 Petroleum Cracking Seamless Steel Tubes

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    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF,FCA,CPT
    Min. Order: 5 Ton
    Delivery Time: 30 Days

Basic Info

Model No.: GB 9948

Additional Info

Packaging: packing in wooden boxes or in hexagonal bundles

Productivity: 20000 Tons per Year

Brand: Torich

Transportation: Ocean,Land,Air

Place of Origin: China

Supply Ability: 60000 Ton per year

Certificate: ISO9001:2008 ISO14001:2008, TS16949, CE PED, TUV, API

HS Code: 7304293000

Port: Shanghai,Ningbo

Product Description

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

We are manufacturer of Seamless Steel Tubes in China, if you want to buy Seamless Carbon Steel Tube, Oil Cylinder Steel Tube, Precision Seamless Steel Tube, Hydraulic Cylinder Steel Tube, please contact us.

Out Diameter: 3~600mm

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

S30mm:Normalizing:At Temperature 980℃~1020℃

Tempering:At Temperature 720℃~760℃

S30mm: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

S30mm:Normalizing:At Temperature 900℃~960℃

Tempering:At Temperature 700℃~750℃

S30mm: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

Seamless Steel Tubes,Seamless Carbon Steel Tube,Oil Cylinder Steel Tube,Precision Seamless Steel Tube,Hydraulic Cylinder Steel Tube


Looking for ideal GB 9948 Seamless Steel Tubes Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the 12CrMo 15CrMo 12Cr1MoV 07Cr19Ni10 are quality guaranteed. We are China Origin Factory of Petroleum Cracking Seamless Steel Tubes. If you have any question, please feel free to contact us.

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  • GB 9948 Petroleum Cracking Seamless Steel Tubes
  • GB 9948 Petroleum Cracking Seamless Steel Tubes
  • GB 9948 Petroleum Cracking Seamless Steel Tubes
  • GB 9948 Petroleum Cracking Seamless Steel Tubes
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