Before the year of 2000, the grade of X70 had already been the most widely used in the pipeline, about 40%. At present, as the extension of pipeline steel outside diameter and the higher requirement of the steel strength, X70 is more and more used in daily life.
As the level of X70 is much higher, many small steel mill can't produce this material due to technical and equipment. In general, this material is mainly produced by the large steel mill like Bao steel, who is one of partner of our company. In order to meet customer's demand, we always keep 800tons stock of this material in Shanghai warehouse.
Grade
|
C
max |
Mn
max |
P
Max |
S
max |
V
max |
Nb
max |
Ti
max |
seamless pipe
| |||||||
X 70
|
0.28
|
1.4
|
0.03
|
0.03
|
f
|
f
|
f
|
welded pipe
| |||||||
X 70
|
0.26
|
1.65
|
0.03
|
0.03
|
f
|
f
|
f
|
f,except for other agreement, Ni+V+Ti ≤ 0.15%
Grade
|
Yield strength
R t0.5 MPa min |
Tensile strength
R m MPa min |
X 70
|
485
|
570
|
Katalor Industry. As a leading ERW and SSAW steel pipe manufacturer in China, we can supply high quality petroleum & gas line pipe, water pipe and construction pipe.
【Whatsapp:+8615538304508】
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