Product classification
API 5L steel pipe
The scope of use includes various structural pipes used in general structures and mechanical structures, as well as in various industries such as construction, machinery, transportation, aviation, and oil extraction
- 产品描述
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The scope of use includes various structural pipes used in general structures and mechanical structures, as well as in various industries such as construction, machinery, transportation, aviation, and oil extraction
Large diameter thick walled seamless steel pipe
1. Seamless steel pipe series for structural use
Standard
GB/T8162-2008, ISO2937, ASTM A53, ASTM A106
JIS G 3441, BS EN 10210-1Purpose
The scope of use includes various structural pipes used in general structures and mechanical structures, as well as in various industries such as construction, machinery, transportation, aviation, and oil extraction
Dimensional tolerances
Standard Outer diameter tolerance Thick wall tolerance GB/T 8162
D<50
±0.50mm
S<4mm
±12.5%
D≥50
±1%
4-20mm
+15/-12.5%
S≥20mm
±12.5%
DIN1629
D50
±0.50mm
S2Sn
+15/-10%
D48.3D48.3
±1%
2SnS4Sn
+12.5/-10%
S4Sn
±9%
ASTM A53
D<48.3
±0.4/-0.79mm
±12.5%
D≥48.3
±1%
ASTM A106
D<48.3
±0.4/-0.79mm
±12.5%
D48.3-114.3
±0.79mm
D≥114.3
±1.59/-0.79mm
Mechanical property
Standard
Steel grade Tensile strength(MPa)
Yield strength(MPa)
Elongation rate <16mm
16-30mm
GB/T 8162
10
335
205
195
24
20
390
245
235
20
35
510
305
295
17
45
590
335
325
14
16Mn
490
325
315
21
DIN 1629
<16mm
>16mm
ST35
345-460
235
225
25
ST45
440-550
255
245
21
ST55
540-645
295
285
17
ST52
490-630
355
345
22
ST45
590-730
335
325
14
ASTM A53
A
330
205
B
415
240
ASTM A106
A
330
205
B
415
240
C
485
275
化学成分 (%)
标准
牌号
C
Si
Mn
P≤
S≤
Cu≤
Ni≤
Cr≤
Mo≤
V≤
GB/T 8162
10
0.07-0.14
0.17-0.37
0.35-0.65
0.035
0.035
0.25
0.25
0.15
/
/
20
0.17-0.24
0.17-0.37
0.35-0.65
0.035
0.035
0.25
0.25
0.25
/
/
35
0.32-0.39
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
/
/
45
0.42-0.50
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.30
0.25
/
/
16Mn
0.12-0.20
0.20-0.55
1.20-1.60
0.045
0.045
0.25
0.25
0.25
/
/
DIN 1629
St35
≤0.18
0.15-0.35
0.35-0.65
0.035
0.035
0.25
0.25
0.25
/
/
St45
≤0.25
0.15-0.35
0.50-0.80
0.035
0.035
0.25
0.25
0.25
/
/
St55
0.33-0.41
0.15-0.35
0.50-0.80
0.035
0.035
0.25
0.25
0.25
/
/
St52
≤0.20
≤0.55
≤1.50
0.035
0.035
0.25
0.25
0.25
/
/
ASTM A53
CK45
0.42-0.50
0.17-0.37
0.50-0.80
0.035
0.035
0.25
0.25
0.25
/
/
ASTM A106
A
≤0.25
/
≤0.95
0.05
0.045
0.40
0.40
0.40
0.15
0.08
B
≤0.30
/
≤1.20
0.05
0.06
0.40
0.40
0.40
0.15
0.08
A
≤0.25
≥0.10
0.27-0.93
0.035
0.035
0.40
0.40
0.40
0.15
0.08
B
≤0.30
≥0.10
0.29-1.06
0.035
0.035
0.40
0.40
0.40
0.15
0.08
C
≤0.35
≥0.10
0.29-1.06
0.035
0.035
0.40
0.40
0.40
0.15
0.08
2. Fluid conveying pipe series
Standard
GB/T8163-2008, ASTM A53, ASTM A106, DIN 1629, JIS G 3458
Purpose
Transporting general fluids is widely used for remote transportation of oil and gas, as well as other liquid transportation
Chemical composition and mechanical properties
GB/T8163-2008
Chemical composition(%)
Mechanical properties
C
Si
Mn
P
S
Mo
Cr
Cu
Yield strength
Tensile strength
Elongation
MPa
MPa
δ（%）
≤
For T in mm
≥
T≤16
T＞16
10
0.07-0.14
0.17-0.37
0.35-0.65
0.035
0.035
≤0.30
≤0.15
≤0.25
205
195
335-475
24
20
0.17-0.24
0.17-0.37
0.35-0.65
0.035
0.035
≤0.30
≤0.25
≤0.25
245
235
410-550
20
16Mn
0.12-0.20
0.20-0.55
1.20-1.60
0.035
0.035
≤0.25
≤0.25
≤0.25
325
315
490-665
21
ASTM A106
Chemical composition(%)
Mechanical properties
C
Si
Mn
P
S
Ni
Cr
Cu
Mo
V
Yield strength
Tensile strength
Elongation
MPa
MPa
δ（%）
Max
Max
Max
Max
Max
Max
Max
Max
Max
Max
Min
Min
See ASTM A53
ASTM A53
A
0.25
/
0.95
0.05
0.045
0.40
0.40
0.40
0.15
0.08
205
330
B
0.30
/
1.20
0.05
0.045
0.40
0.40
0.40
0.15
0.08
240
415
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