GB/T8163

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OD(mm) Wall Thickness Unit(mm)
  2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 12-16 16-18 18-20 20-24 24-30
Φ20-Φ23 ● ● ● ● ● ●                  
Φ24-Φ36 ● ● ● ● ● ● ● ●              
Φ38-Φ43 ● ● ● ● ● ● ● ● ● ●          
Φ44-Φ60 ● ● ● ● ● ● ● ● ● ●          
Φ61-Φ76     ● ● ● ● ● ● ● ●          
Φ89-Φ114     ● ● ● ● ● ● ● ● ● ● ●    
Φ121-133       ● ● ● ● ● ● ● ● ● ● ●  
Φ140-Φ159       ● ● ● ● ● ● ● ● ● ● ● ●
Φ168-Φ180       ● ● ● ● ● ● ● ● ● ● ● ●

OD(mm)
Wall Thickness Unit(mm)
/
10.5-12
12.5-17
18-20
21-25
26-30
Φ127
●
●
●
●
●
Φ133
●
●
●
●
●
Φ140
●
●
●
●
●
Φ146
●
●
●
●
●
Φ152
●
●
●
●
●
Φ159
●
●
●
●
●
Φ168
●
●
●
●
●
Φ180
●
●
●
●
●

Seamless carbon steel tube for liquid service

Application:

for petrol,gas and other liquid transportation

Size(mm):

O.D.:6.0-180.0 W.T.:1-30 L:max 12000

Mechanical Properties(Mpa):


Standard

Grade

(Mpa) Tensil strength

(Mpa) Yield point

(%)  

GB/T8163

10

335-475

≥205

≥24

20

410-550

≥245

≥20

Q345

490-665

≥325

≥21

Grade and Chemical Composition(%):


Standard

Grade

Chemical composition

C

Si

Mn

P

S

Cu

GB/T8163

10

0.07-0.14

0.07-0.37

0.35-0.65

≤0.035

≤0.035

≤0.25

20

0.17-0.24

0.17-0.37

0.35-0.65

≤0.035

≤0.035

≤0.25

Q345

0.12-0.20

0.20-0.55

1.20-1.60

≤0.045

≤0.045

-

Dimensional Accuracy:

Way of producing

OD

WT

Pipe Size

Tolerance

(mm)

Tolerance

   

 

 

Hot rolled

All

±1.0%(min±0.50mm)

All

15%,-12.5% 
min+0.45mm,-0.40mm

Cold Drawn(rolled)

6∼10

±0.20mm

±0.15mm

≤1

±0.15mm

±0.12mm

>10-30

±0.40mm

±0.20mm

>1-3

+15%,-10%

+12.5%,-10%

>30-50

±0.45mm

±0.30mm

>3

+12.5%,-10%

±10%

>50

±1%

±0.8%

 -

 -

 -

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