Seamless Steel Pipe, SMLS Steel Pipe, used for used for low pressure liquid delivery, such as water, gas, and oil. Oil drilling and machinery manufacturing, etc.
Standard: DIN 2391
Precision seamless steel tubes.
Seamless Steel Pipe, SMLS Steel Pipe, SMLS Steel Tube
Chemical Composition(%):
Steel Grade |
Chemical Analysis % |
|||||
Grade |
Material NO. |
C max. |
Si max. |
Mn |
P max. |
S max. |
St 30 Si |
1.0211 |
0.1 |
0.3 |
≤0.55 |
0.025 |
0.025 |
St 30 Al |
1.0212 |
0.1 |
0.05 |
≤0.55 |
0.025 |
0.025 |
St 35 |
1.0305 |
0.17 |
0.35 |
≥0.40 |
0.025 |
0.025 |
St 45 |
1.0408 |
0.21 |
0.35 |
≥0.40 |
0.025 |
0.025 |
St 52 |
1.058 |
0.22 |
0.55 |
≤1.60 |
0.025 |
0.025 |
Can join the alloy elements: Nb:≤0.03%;Ti:≤0.03%;V:≤0.05%;Nb+Ti+V:≤0.05% |
Mechanical Properties:
Delivery State |
BK |
BKW |
BKS |
GBK |
NSK |
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Grade |
|||||||||||||
Grade |
Material NO. |
Tensile Strength
(N/mm2)
Min.
|
Elongation
%
Min.
|
Tensile Strength
(N/mm2)
Min.
|
Elongation
%
Min.
|
Tensile Strength
(N/mm2)
Min.
|
Yield Strength
(N/mm2)
min.
|
Elongation
%
Min.
|
Tensile Strength
(N/mm2)
Min.
|
Elongation
%
Min.
|
Tensile Strength
(N/mm2)
Min.
|
Yield Strength
(N/mm2)
min.
|
Elongation
%
Min.
|
St 30 Si |
1.0211 |
430 |
8 |
380 |
12 |
380 |
280 |
15 |
280 |
30 |
290-420 |
215 |
30 |
St 30 Al |
1.0212 |
430 |
8 |
380 |
12 |
380 |
280 |
15 |
280 |
30 |
290-420 |
215 |
30 |
St 35 |
1.0305 |
480 |
6 |
420 |
10 |
420 |
315 |
14 |
315 |
25 |
340-470 |
235 |
25 |
St 45 |
1.0408 |
580 |
5 |
520 |
8 |
520 |
375 |
12 |
390 |
21 |
440-570 |
255 |
21 |
St 52 |
1.058 |
640 |
4 |
580 |
7 |
580 |
420 |
10 |
490 |
22 |
490-630 |
355 |
22 |
OD/mm | WT/mm | |||||||||||||||||||||||||||||||||||||
3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | |
21.3 | √ | √ | √ | √ | √ | |||||||||||||||||||||||||||||||||
26.7 | √ | √ | √ | √ | √ | √ | ||||||||||||||||||||||||||||||||
33.4 | √ | √ | √ | √ | √ | √ | ||||||||||||||||||||||||||||||||
48.3 | √ | √ | √ | √ | √ | √ | √ | √ | ||||||||||||||||||||||||||||||
60.3 | √ | √ | √ | √ | √ | √ | √ | √ | ||||||||||||||||||||||||||||||
73 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||||||||||||||||||||||||
88.9 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |||||||||||||||||||||||||||
114.3 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||||||||||||||||||||||
168.3 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||||||||||||||||||
219.1 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||||||||||||||||
273.1 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||||||||||||||
323.3 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |||||||||||
355.6 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |||||||||
406.4 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||
457.2 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||
508 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||
609.6 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |||||||
660.4 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |||||||
711.2 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||||||
762 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
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