Table: GB/T3094 Q345B SHS/RSH Pipe Specifications
| Property | Value |
|---|---|
| Yield Strength | ≥345 MPa |
| Tensile Strength | 470-630 MPa |
| Elongation | ≥21% |
| Size Range (SHS) | 40x40mm to 400x400mm |
| Size Range (RHS) | 40x20mm to 400x200mm |
| Thickness Range | 2mm to 20mm |
| Standard Length | 1000mm to 12000mm |
SHS (Square Hollow Section) pipes have equal sides, while RHS (Rectangular Hollow Section) pipes have two pairs of parallel sides with different lengths.
GB/T3094 Q345B SHS/RSH pipes are available in sizes ranging from 40x40mm to 400x400mm for SHS, and 40x20mm to 400x200mm for RHS, with thicknesses from 2mm to 20mm.
Q345B is a high-strength low-alloy steel grade with a minimum yield strength of 345 MPa. The “B” designation indicates it has good low-temperature impact toughness, tested at 20°C.
GB/T3094 Q345B SHS/RSH pipes offer excellent strength-to-weight ratios and are particularly useful for applications requiring high load-bearing capacity and good torsional resistance.
The main advantages include high strength, good weldability, versatility in design, and suitability for various construction applications, especially those requiring high load-bearing capacity and good low-temperature performance.
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