TEL:0086 317 2186001

/ 2186002 / 3585001

FAX:0086 317 5671157

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Cangzhou KTD Steel Pipe Co., Ltd.

Tel: 86-317-2186001  2186002   3585001    

Fax: 86-317-5671157  3580002    

 

Add: King Long Square,

Jianshe South Avenue,

Xinhua district, Cangzhou,
Hebei,China  061000

  SMLS Chemical components and mechanical property
Class Sort Chemical components Mechanical property
C Mn Mo Cr Ni Cu P S Si tensile strength
(Mpa) 
yield strength (Mpa)
Hardness
Min Max Min Max Min Max Min Max Max Max Max Max Max Min Max Min HRC HBW/HBS
H40 / / / / / / / / / / / 0.03 0.03 / 278 552 414 / /
J55 / / / / / / / / / / / 0.03 0.03 / 379 552 517 / /
K55 / / / / / / / / / / / 0.03 0.03 / 379 552 655 / /
N80 1 / / / / / / / / / / 0.03 0.03 / 552 768 689 / /
0 / / / / / / / / / / 0.03 0.03 / 552 768 689 / /
M65 / / / / / / / / / / / 0.03 0.03 / 448 586 586 22 235
1 / 0.48 / 1.90 / / / / 0.25 0.35 0.03 0.03 0.45 552 655 655 28 241
L80 9Cr / 0.15 0.30 0.60 0.9 1.1 8 10 0.5 0.25 0.02 0.01 1 552 655 655 23 241
13Cr 0.15 0.22 0.25 1.00 / / 12 14 0.5 0.25 0.02 0.01 1 552 655 655 23 241
C90 1 / 0.35 / 1.00 0.25 0.76 / 1.2 0.99 / 0.02 0.01 / 621 724 689 25.4 255
2 / 0.50 / 1.90 / NL / NL 0.99 / 0.03 0.01 / 621 724 689 25.4 255
T95 1 / 0.35 / 1.20 0.25 0.85 0.4 1.5 0.99 / 0.02 0.01 / 655 758 724 25.4 255
2 / 0.50 / 1.90 / / / / 0.99 / 0.03 0.01 / 655 758 724 25.4 255
P110 / / / / / / / / / / / 0.03 0.03 / 758 965 862 / /

 

  Tolerences of Outer Diameter and Wall Thickness
Standard Tolerences of Outer Diameter(mm) Tolerences of Wall Thickness(mm)
Ourter Diameter(mm) Tolerences of Outer Diameter(mm) Outer Diameter≤130mm Outer Diameter>130mm
GB/T8162-1000 >50 +1%

S≤4
4-20
S>20

S±12.5% 
+15%-10%
±12.5%
GB/T8163-1999 ALL Tolerence of hot finished steel pipe
+1%,min +0.5mm
ALL +15%-10%
ASTM A53

<48.3
>60.3

+0.4mm -0.79mm 
+1%
ALL ±12.5%
ASTM A106 <48.3
48.3-114.3 
>114.3
+0.4mm -0.79mm
+0.79mm
+1.59mm -0.79mm
ALL ±12.5%
GB9948-1988 ≤159 
>159

+1.0% 
+1.25%

S≤20
S>20
±12.5%
+10%

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