Seamless steel tube for transmission of fluids
Size Range
- O.D 19.05-168.3mm
- W.T 2.31-14.27mm
Production Standard and Steel Grade:
- ASTM A106 (Grade A,B,C)
- ASTM SA53/SA-53M (Grade A,B,C)
Delivery Situation:
- Cold draw pipe shall be heat treated after the final cold draw pass at a temperature of 650Degrees Celsius or higher
Correlation Testing:
- ChemicalComposition, Heat Analysis, Product Analysis, Mechanical Properties,Bending Requirements, Flattening Tests, Hydrostatic Tests,Nondestructive Electric Tests
Surface Treatment:
- Temporary Coating, Special Coating, Galvanized, Antirust Treatment
Standard:
GB/T8163 Chinese national standard
Application:
General seamless steel tubes for conveying fluids
Models of major steel tubes:
1020,Q345,etc
GB/T8163 Chinese national standard
Application:
General seamless steel tubes for conveying fluids
Models of major steel tubes:
1020,Q345,etc
Diamensional tolerances:
Types of steel tubes | Outer diameter | Wall thickness | ||
Cold-rolled tubes | Tolerances(mm) | Tube sizes (mm) | Tolerances(mm) | |
3050 | ±0.3 | ≤30 | ±10 | |
50219 | ±0.8 | |||
Hot-rolled tubes | 219 | ±1.0 | 20 | ±10 |
Mechanical properties:
Standard codes | Models of steel tubes | Tensite strength(MPa) | Yield strength(MPa) | Elongation() |
GB/T8163 | 10 | 335475 | ≥205 | ≥24 |
20 | 410550 | ≥245 | ≥20 | |
Q345 | 490665 | ≥325 | ≥21 |
Chemical composition:
Standard codes | Models of steel tubes | Chemical compositions() | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu | ||
GB/T8163 | 10 | 0.070.14 | 0.170.37 | 0.350.65 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.25 | ≤0.25 |
20 | 0.170.24 | 0.170.37 | 0.350.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 | |
Q345 | 0.120.20 | 0.200.55 | 1.201.60 | ≤0.045 | ≤0.045 | / | / | / | |
