Application Status and Prospects of Hot Rolled H Beam and Welded H Beam for Construction Steel Structure
In China,the steel for steel structure is mainly plate and applications of hot rolled H beam(RH)in steel structure is growing slowly.The use level of RH accounts for only 15%of total amount of H beam,which is relatively lower and the rest is welded H beam(BH).In this article,the specifications,types,production processes,residual stresses,microstructure at R corner,advantages and disadvantages as well as future development trends of BH and RH are compared and analyzed.Moreover,several countermeasures for the application bottleneck of RH in construction steel structure are proposed.
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