S355JO has better low temperature toughness than S355JB and is suitable for cold regions or dynamic load scenarios. S355 series generally requires controlled rolling (TMCP) or normalizing (N) delivery to ensure uniformity of structure.
S275JR angle steel: has low yield strength, suitable for general structural purposes, and can meet the basic requirements for structural strength of common buildings, bridges and other general projects. S355JR angle steel: has high strength, suitable for structures with high loads and high stresses, and can meet the high strength requirements of tower cranes, runways and other scenes.
Q235B seamless pipe is a seamless pipe made of carbon structural steel defined in accordance with the Chinese national standard GB/T700. It has certain strength and good processing performance at room temperature, good surface quality, and can meet the use requirements of general engineering.
Seamless welding technology is the key to ensure the quality of rectangular tubes. Through advanced welding technology, it is possible to achieve no welds inside the tube and a smooth and flat outside. It is not only beautiful, but also effectively prevents leakage or breakage caused by welds, enhancing the overall performance and reliability of the tube.
It is easy to cast and weld, which is conducive to manufacturing parts of various shapes and processing and assembly. It also has good plasticity, which is convenient for cutting, bending, stamping and other processes. It can withstand various harsh climate and environmental conditions and has certain corrosion resistance.
Q355B is a low-alloy high-strength structural steel with a tensile strength of 470-630MPa, a yield strength of 280-420MPa, and an elongation of 21-29%. This makes it have better strength and stability under heavy loads and complex working conditions, and can show good plastic deformation ability when subjected to external forces, absorb more energy, and protect the structure from damage.
