The chemical composition of DIN 2391 ST 35 seamless precision steel tubes consists of carbon, silicon, manganese, phosphorus and sulphur. This chemical composition allows carbon steel DIN 2391 ST 35 tubes to have high hardness at low carbon content and to be processed at a much lower cost than high-carbon steels.
The final heat treatment of DIN 2391 ST 35 tubes is followed by cold drawing, which involves limited distortion. Appropriate further processing permits some degree of cold forming, e.g. bending and expansion.
DIN 2391 ST35 low carbon seamless steel tubes are used for applications requiring excellent hardness properties in a wide variety of chemical industries, water, gas and oil supply pipelines as well as fluid and boiler piping systems.
DIN 2391 ST35 steel pipes Seamless pipe specifications
| DIN Standard | DIN 2391 |
| Available Grade | ST35 |
| Outer Dimensions | 4.0 To 60.0 MM |
| Size in Mm | OD (4-190) x WT (0.5-15) |
| Wall Thickness | 0.5 To 8 mm |
| Maximum Length | Maximum 6000mm |
DIN 2391 ST35 Carbon steel precision tube 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 |
DIN 2391 ST35 Low carbon cold drawn tube Mechanical Properties
| Mechanical properties at room temperature | ||||
| Steel Grade | Minimum values for the delivery condition | |||
| Steel Name | Steel Number | NBK | ||
| Rm | ReH | A % | ||
| Mpa | Mpa | |||
| St 35 | 1.0308 | 340 to 470 | 235 | 25 |
DIN 2391 ST35 precision steel pipe
Advantages of GNEE
Gnee has an ISO9001-2000 quality management system and an ISO14001 environmental protection system. At the same time, it actively develops diversification and has formed mainly carbon steel and stainless steel, covering pipes, profiles, plates and other products.
