Q345B is a kind of steel pipe material. Q represents the yield strength of the material，the following 345 refers to the yield value of this material. GB/T1591 Q345B steel is low carbon alloy steel, which own good overall performance, good low temperature performance, cold stamping, welding and cutting properties.
Q345B steel pipe is equal to 16Mn steel pipe, is a kind of seamless steel pipes.
GB/T1591 Q345B Low-Alloy Steel widely used in bridges, vehicles, ships, buildings, pressure vessels, etc.
GB/T1591 Q345B Steel Chemical Compositions:
|
Grade |
Chemical Compositions (%), maximum |
||||
|
C |
Mn≥ |
Si |
P |
S |
|
|
GB/T1591 Q345B |
0.20 |
1.70 |
0.50 |
0.035 |
0.035 |
GB/T1591 Q345B Steel Mechanical Property, minimum:
|
Grade |
Mechanical Property |
|||
|
Tensile Strength(MPa) |
Yield Strength(MPa) |
% Elongation in 2 in.(50mm) min |
Impacting Test Temperature(°C) |
|
|
GB/T1591 Q345B |
470-630 |
345 |
20 |
20 |
Anyway, if you want to find High quality GB/T1591 Q345B Low-alloy seamless steel pipe supplier, manufacturer, exporter, please contact Katalor steel’s sales team. We can assure you we will offer you the best price steel pipes with best quality.
