steel pipe

Advantage: special wall thickness and large caliber seamless pipes. Such as O.D.457.2mm,508mm and 609.6mm,


Class
Sort
Chemical components
Mechanical property
C
Mn
Mo
Cr
Ni
Cu
P
S
Si
Yield Strength
(Mpa)
Tensile Strength
(Mpa)
Hardness
Min
Max
Min
Max
Min
Max
Min
Max
Max
Max
Max
Max
Max
Min
Max
Min
HRC
HBW/HBC
H40
/
/
/
/
/
/
/
/
/
/
/
0.030
0.030
/
276
552
414
/
/
J55
/
/
/
/
/
/
/
/
/
/
/
0.030
0.030
/
379
552
517
/
/
K55
/
/
/
/
/
/
/
/
/
/
/
0.030
0.030
/
379
552
655
/
/
N80
1
/
/
/
/
/
/
/
/
/
/
0.030
0.030
/
552
758
689
/
/
0
/
/
/
/
/
/
/
/
/
/
0.030
0.030
/
552
758
689
/
/
M65
/
/
/
/
/
/
/
/
/
/
/
0.030
0.030
/
448
586
586
22
235
1
/
0.43
/
1.90
/
/
/
/
0.25
0.35
0.030
0.030
0.45
552
655
655
23
241