The three-dimensional roll of cold-rolled ribbed bar is a kind of steel bar with three sides crescent shaped, which is formed by hot-rolled wire rod after multi-channel cold-rolled reducing, one rib pressing and internal stress relieving. Cold rolled ribbed steel bar in prestressed concrete members is the replacement product of cold drawn low carbon steel wire. In cast-in-place concrete structure, it can replace grade I steel bar to save steel. It is a better kind of cold-worked steel of the same kind.
分類 Classification | 牌號 Grade | 粘結劑 Binder（wt%） | 硬度/HRA Hardness | 密度(g/cm3) Density | 抗彎強度 Mpa TRS | 抗壓強度 Mpa Compressive Strength |
|---|---|---|---|---|---|---|
| DG-series（Co-Ni-Cr） | DG1X | 8 | 88.00 | 14.70 | 2850 | 4100 |
| DG06 | 10 | 86.50 | 14.50 | 2850 | 3800 | |
| DG1A | 10 | 87.00 | 14.50 | 2800 | 3900 | |
| DG2 | 13 | 58.00 | 14.20 | 2700 | 3700 | |
| DG2A | 15 | 84.50 | 14.00 | 2650 | 3500 | |
| DG4 | 18 | 83.50 | 13.70 | 2580 | 3300 | |
| DG5 | 20 | 82.00 | 13.60 | 2580 | 3100 | |
| DG6 | 25 | 80.00 | 13.10 | 2500 | 2900 | |
| DG7 | 27 | 78.50 | 12.90 | 2400 | 2700 | |
| DG9 | 30 | 77.50 | 12.65 | 2300 | 2600 | |
| M-series（Cobalt） | DG2-M | 13 | 86.70 | 14.20 | 2750 | 3900 |
| DG2A-M | 15 | 85.30 | 14.05 | 2750 | 3800 | |
| DG4-M | 18 | 84.50 | 13.70 | 2800 | 3500 | |
| DG5A | 22 | 81.50 | 13.40 | 2650 | 3000 | |
| DG5-M | 20 | 83.50 | 13.50 | 2600 | 3300 | |
| DG6-M | 25 | 82.50 | 13.10 | 2600 | 3100 | |
| Cobalt | HY07 | 6 | 88.50 | 14.90 | 2800 | 4300 |
| Hengcheng | Cerametal | Sandvik | Kennametal | Sintermet | Mitsubishi | Saramant | Taegutec | ZCC | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| old | new | old | new | old | new | ||||||
| DG1F | HY07 | CE3(CTC12A) | H6T | MN0 | VG07 | KHR01 | T065 | ||||
| DG1X | SM80 | GA5210 | GX210 | ||||||||
| DG1A | CE51(CTC20A) | C10C | MN04 | SM63 | GA5315 | GX315 | VN10 | KHR05 | T11L | YGR20 | |
| DG06 | |||||||||||
| DG2 | CE65(CTC25A) | GA5320 | GX320 | KHR30 | T14L | YGR25 | |||||
| DG2A | CE79(CTC30A) | C15C | MN2 | SM59 | GA5328 | GX330 | VN40 | KHR10 | T15M | YGR30 | |
| DG2-M | YGH25 | ||||||||||
| DG2A-M | YGH30 | ||||||||||
| DG4 | CE103(CTC35A) | GA5335 | GX335 | VN45 | KHR40 | T17L | YGR40 | ||||
| DG4-M | YGH40 | ||||||||||
| DG5 | CE107(CTC40A) | C20C | MN4 | SM60 | GA5540 | GX540 | VN50 | KHR60 | T20M | YGR45 | |
| DG5A | HY22 | CE112(CTC44A) | GA5250 | KHR70 | |||||||
| DG5-M | YGH45 | ||||||||||
| DG5A-M | YGH50 | ||||||||||
| DG6 | CE114(CTC50A) | C25C | RCV5 | SM61 | GA5350 | GX350 | KHR75 | T25H | YGR55 | ||
| DG6-M | YGH55 | ||||||||||
| DG7 | G55 | GA5355 | KHR80 | ||||||||
| DG7-M | |||||||||||
| DG9 | CE115(CTC60A) | C30T | RCV6 | SM62 | GA7365 | GX365 | VN77 | KHR90 | T30M | YGR60 | |
| DG9A | HY30 | H30P | MN6 | VN76 | KHR90A | ||||||
| DG9-M | YGH60 | ||||||||||
