belong to constructional material, profile steel.. It's made of hot rolled or welded.steel plate, has deep trough, thick plate. H type steel, H beams, H steel beams, H profile steel, H section steel , H-shaped steel, belong to constructional material, profile steel..It's made of hot rolled or welded.steel plate, has deep trough, thick plate. Types: HW, HM, HN,H . Detail Specifications: ...