The main supply record
| JFE Steel Corporation |
| Galvatex Corporation |
| NITTO GALVANIZING CO., LTD. |
| Kazusa Steel Co.,LTD |
| Kubota Corporation |
| JFE Mechanical Co.,Ltd. |
| JP Steel Plantech Co. |
| JFE Metal Products & Engineering Inc. |
| NIPPON STEEL & SUMIKIN PIPE CO,LTD |
| IHI Corporation |
| Sojitz Machinery Corporation |
| TOKYO STEEL CO.,LTD |
| Thailand: T.U.S.、S.S.P.、T.H.S. |
| Taiwan: YIEH HSING ENTERPRISE CO,LTD |
| China： Xuzhow Steel |
| Korea： K.S.I. |
| Korea： Korea Steel Pipe CO,LTD |
| Korea： Coating Korea CO,LTD |
| New Zealand： BHP,New Zealand Steel |
| Israel： AVROT INDUSTRIES LTD |
| The other about 110 companies |