168mm API Steel Pipe

1) Size: OD 6"-38"(API Steel Pipe)168mm-965mm
2) Wall thickness:6mm-50mm
3) API Steel Pipe Executive standard:
A.ASTM A53 GR.B,API,ASTM A106 Gr. B/ A178-C/ A210-A, JISG3454/3455/3461/3456, DIN7175/1626/1629,EN10204,EN10203,GOST;
B. JIS G345,ASTM A210-C,DIN1629/17155;
C. JIS G3201/G4051,DIN17200,ASTM A266
4) Technique: Hot rolling or cold drawn or hot expanding
5) Packing:Bundles wrapped with strong steel trips,caps on two ends of every pipe or according to customers' requests.
6) Surface:Oiled or black painted to prevent rust.
7) Delivery time: 7-15 days after receipt of the order.

Chemical composition Of API Steel Pipe,GB/T Steel Pipe,DIN Steel Pipe

Standards Grade C Si Mn P≤ S≤
GB/T 10 0.07-0.14 0.17-0.37 0.35-0.65 0.035 0.035
20 0.17-0.24 0.17-0.37 0.35-0.65 0.035 0.035
35 0.32-0.39 0.17-0.37 0.50-0.80 0.035 0.035
45 0.42-0.50 0.17-0.37 0.50-0.80 0.035 0.035
16Mn 0.12-0.20 0.20-0.55 1.20-1.60 0.045 0.045
DIN St35 ≤0.18 0.15-0.35 0.35-0.65 0.035 0.035
St45 ≤0.25 0.15-0.35 0.50-0.80 0.035 0.035
St55 0.33-0.41 0.15-0.35 0.50-0.80 0.035 0.035
St52 ≤0.20 ≤0.55 ≤1.50 0.035 0.035
ASTM A53 CK45 0.42-0.50 0.17-0.37 0.50-0.80 0.035 0.035
ASTM A106 A ≤0.25 / ≤0.95 0.05 0.045
B ≤0.30        

Mechanical properties Of GB/DIN/API Steel Pipe

Standards Grade T.S.(MPa) Y.S.(MPa) Elongation(%)
<16mm 16-30mm
GB/T 10 335 205 195 24
20 390 245 235 20
35 510 305 295 17
45 590 335 325 14
16Mn 490 325 315 21
DIN   <16mm >16mm  
ST35 345-460 235 225 25
ST45 440-550 255 245 21
ST55 540-645 295 285 17
ST52 490-630 355 345 22
ST45 590-730 335 325 14
ASTM A53 A 330 205  
B 415 240
ASTM A106 A 330 205  
B 415 240
C 485 275

 


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