MOST COMMONLY USED BRANDS/ORIGIN
| JAPAN | NIPPON STEEL & SUMITOMO METAL, JFE; BENKAN, AWAJI, KASUGAI |
| KOREA | SEAH STEEL, HYUNDAI, KJF, GANA, KOFCO, DONGKUK, POSCO, KUMWOO |
| EUROPE | BENTELER, V&M, METALFAR, MELESI, ULMA, ERNE FITTINGS, TENARIS |
| THAILAND | BKL, COTCO-SV |
| CHINA | CNBM, TPCO, BAOSTEEL |