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TORICH GB/T9948 12CrMo Seamless Steel Tubes Precision Steel Tube For Petrleum Cracking

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TORICH GB/T9948 12CrMo Seamless Steel Tubes Precision Steel Tube For Petrleum Cracking

Brand Name : TORICH

Model Number : GB/T9948

Certification : ISO9001 ISO14001

Place of Origin : CHINA

MOQ : 3ton

Price : 800-1200USD/TON

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 30000tons/year

Delivery Time : 30-45work days

Packaging Details : In plywood case,In wooden box.

Product name : TORICH GB/T9948 12CrMo Seamless Steel Tubes For Petrleum Cracking

Keyword : Seamless Steel Tubes

Type : Seamless Steel Tube

Surface : Oiled

Material : 30CrMo ZT380

Usage : Oil Pipe

Shape : Round

Length : 2-12m

OD : 30-340mm

WT : 2-30mm

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TORICH GB/T9948 12CrMo Seamless Steel Tubes For Petrleum Cracking

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

TORICH GB/T9948 12CrMo Seamless Steel Tubes Precision Steel Tube For Petrleum Cracking


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