Cold drawn seamless steel tube are manufactured by drawing solid steel billets through a die at room temperature. This process results in a tube with exceptional dimensional accuracy, superior surface finish, and excellent mechanical properties, including high strength and uniformity.
It is ideal for high-precision devices,hydraulic system,automotive components and others


| COLD DRAWN SEAMLESS STEEL TUBE | |||
| Standards | Steel Grades | Size Range | |
| DIN | 2391 | ST35/45/52 | OD2 - 60mm WT0.3 -10mm |
| 1629 | ST37/44/52 | OD2 - 60mm WT0.3 -10mm | |
| 1630 | ST37.4/44.4/52.4 | OD2 - 60mm WT0.3 -10mm | |
| 2445 | ST35/ST52/ST37.4//52.4 | OD2 - 60mm WT0.3 -10mm | |
| 73000 | ST 35 / 45 / 52/ 37.4 / 44.4 /52.4 | OD3 - 30mm ID 1 - 12.5 mm | |
| GB/T | 8162 | 10/20/16Mn/35/45/30CrMo/42CrMo/etc | OD2 - 60mm WT0.3 -10mm |
| 8163 | 10/20/16Mn/35/45/30CrMo/42CrMo/etc | OD2 - 60mm WT0.3 -10mm | |
| 3639 | 10/20/16Mn/35/45/30CrMo/42CrMo/etc | OD2 - 60mm WT0.3 -10mm | |
| 3093 | 10/20/16Mn/35/45/30CrMo/42CrMo/etc | OD3 - 30mm ID 1 - 12.5 mm | |
| EN | 10305-1 | E215/235/255/355 | OD2 - 60mm WT0.3 -10mm |
| 10305-4 | E215/235/255/355 | OD2 - 60mm WT0.3 -10mm | |
| ASTM | A822-A450 | A822 | OD2 - 60mm WT0.3 -10mm |
| A179-A450 | A179 | OD2 - 60mm WT0.3 -10mm | |
| A519 | 1010/1015/1025/1030/1045/4130/4140/etc | OD2 - 60mm WT0.3 -10mm | |
| SAE | J524 | Low carbon steel | OD2 - 60mm WT0.3 -10mm |
| J529 | Low carbon steel | OD3 - 30mm ID 1 - 12.5 mm | |
| JIS | G3445 | STKM11A/12A/12B/12C/13A/13B/13C/S45C/etc | OD2 - 60mm WT0.3 -10mm |
| G3455 | STS35/38/42/49 | OD3 - 30mm ID 1 - 12.5 mm | |
| ISO | 8535 | ST 35 / 45 / 52/ 37.4 / 44.4 /52.4 | OD3 - 30mm ID 1 - 12.5 mm |
| NF | A49-310 | TU37b/TU52b | OD2 - 60mm WT0.3 -10mm |
| BS | 3602 | CFS 360 | OD2 - 60mm WT0.3 -10mm |
| 6323(-4) | CFS2/CFS3/CFS4/CFS5 | OD2 - 60mm WT0.3 -10mm | |
| ASTM | A269 | 304,304L, 316, 316L | OD2 - 60mm WT0.3 -10mm |
| EN | 10216-5 | 1.4401, 1.4404 | OD2 - 60mm WT0.3 -10mm |
| GOST | 8733-74 | 10/20/35/45/10Mn2/15Cr/20Cr/40Cr/30CrMnSiN/15CrMo | OD5 - 250mm WT0.3 - 24mm |
| 8734-75 | 10/20/35/45/10Mn2/15Cr/20Cr/40Cr/30CrMnSiN/15CrMo | OD5 - 250mm WT0.3 - 24mm | |