GB3094 Q345 rectangular hollow section, rectangular pipe, rectangular tube
GB/T 6728 Q345 square hollow section is widely used for agricultural and chemical machinery, glass curtain wall, car chassis, airports, boiler construction, highway railings, housing construction, pressure vessel , oil storage tanks, bridges, power station equipment, lifting and transport machinery and other higher loads welded structure steels and so on.
Q345 rectangular hollow section Feature:
1.High strength grades are highly competitive on the market of alternative products
2.Flat surface of the tube makes it easy to couple with other materials or perform other fabrication process
3.Clean lines make it easily apply finishes
4.Minimal edge preparation required for joining and welding
5.Advanced coatings suit most top coats
6.Easy and safe to weld
GB3094 Q345 rectangular hollow section Chemical Composition Analysis:
Grade | C | Si | Mn | P | S | |
GB3094
Q345 |
A | ≤0.20 | ≤0.50 | ≤1.70 | 0.035 | 0.035 |
B | 0.035 | 0.035 | ||||
C | 0.030 | 0.030 | ||||
D | ≤0.18 | 0.030 | 0.025 | |||
E | 0.025 | 0.020 |
GB3094 Q345 rectangular hollow section Mechanical Properties:
Grade | Thickness
mm |
Yield strength
MPa |
Tensile strength
MPa |
Elongation
% |
|
GB3094
Q345 |
A | ≤40 | ≥335 | 470~630 | ≥20 |
B | |||||
C | ≥21 | ||||
D | |||||
E |
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