DIN2391 ST35 cold-drawn precision seamless steel tube is a precision cold-drawn seamless tube with high dimensional accuracy and good surface finish used in mechanical structures and hydraulic equipment.GNEE Group is a professional manufacturer and supplier of cold-drawn precision seamless tubes. Choosing GNEE Group’s precision seamless tubes to manufacture mechanical structures or hydraulic equipment, etc., can greatly save machining man-hours, improve material utilization, and at the same time It will help to improve the quality of products. If you need cold-drawn precision seamless tubes, please feel free to contact us.
| Grade | ST35 |
| Size | 6mm-350mm |
| W.T. | 0.8mm-50mm |
| Shape | Round |
| Production type | Cold drawn |
| Length | Single random length/ Double random length or as customer’s actual request max length is 10m. |
ST35 Seamless Steel Pipe Chemical Composition
| Standard | Grade | Chemical Components (%) | |||||
| Symbol | Material No. | C | Si | Mn | P | S | |
| DIN2391 | St 35 | 1.0308 | ≤0.17 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 |
ST35 Cold Drawn Steel Pipe Mechanical Properties.
| Mechanical properties at room temperature | |||||||||||||
| Steel Grade | Minimum values for the delivery condition | ||||||||||||
| Steel Name | Steel Number | BK | BKW | BKS | GBK | NBK | |||||||
| Rm | A % | Rm | A % | Rm | ReH | A % | Rm | A % | Rm | ReH | A % | ||
| Mpa | Mpa | Mpa | Mpa | Mpa | Mpa | Mpa | |||||||
| St 35 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340 to 470 | 235 | 25 |
Inspection and test list for the DIN 2391 Standard Pipe
| Inspection or test types | Test frequency | |
| Internal test | Acceptance test | |
| Chemical analysis | M | M |
| Tensile testing | M | One per tested batch |
| Flattening test or extension test | M | Two per tested batch |
| Dimension verification | M | M |
| Visual inspection | M | M |
| NDT in order to identify leaks | Individual | Individual |
GNEE Group is a professional supplier and exporter of DIN2391 seamless precision steel pipes. We can provide DIN2391 steel pipes of different materials and specifications. If you need anything, you can contact us at any time and we will serve you wholeheartedly in terms of quality and price.
