China ASTM A671 Gr60 CL22 welded pipe wholesale is often produced in electric-fusion-welded steel pipe for atmospheric and lower temperatures. This kind of pipe is mainly used for transporting oil and gas.
ASTM A671 welded pipes can be divided into 23 grades and 28 classes.Grades shall designate the type of plate used while class shall designate the type of heat treatment performed during pipe manufacture. Class shall be designated as to whether the weld is radiographically examined, and as to whether the pipe is pressure tested.
ASTM A671 Gr. CC60 EFW welded steel pipe is made from A516 Gr. 60 killed and plain carbon steel plates for cryogenic pressure vessels .A516 gr.60 steel plate for ASME specification is recommended for non-nickel low temperature steel materials, and the lowest temperature is 18~60 degrees C.
ASTM A671 CC 60 welded pipe chemical composition
Steel grade
|
C max |
Si |
Mn |
P |
S |
Ti |
| CC 60/c60 |
0.21 |
0.13-0.45 |
0.55-0.98 |
0.035 |
0.035 |
/ |
ASTM A671 CC 60 welded pipe mechanical properties
| Steel grade |
Yield point (N/mm2) |
Tensile Stregth (N/mm2) |
Elongation (%) |
Welding point tensile strength (N/mm2) |
| CC60/C60 |
220 |
415~550 |
25 |
415~550 |
In accordance with the principle of chemical composition and performance matching of the material, in order to ensure good welding and low temperature toughness of welded joints, the tig-80ni1 welding wire and W506Ni welding rod are used as welding materials for the steel tube of the A671 Gr 60C CL22 EFW welded steel pipe.
