Rebar yog lub npe nquag rau kub-rolled ribbed steel kab. Cov qib ntawm dog dig kub-yob steel bar muaj ntawm HRB thiab qhov tsawg kawg ntawm cov qib kawm. H, R, and B are the first English letters of the three words, Hotrolled, Ribbed, and Bars, respectively. Hot-rolled ribbed steel bars are d...
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