Seamless Precision Steel Tube CK45 DIN2391 Cold Rolled Tube
Brand Name:Torich
Certification:TS16949
Model Number:DIN2391
Minimum Order Quantity:5tons
Delivery Time:5-8 week days
Payment Terms:L/C, T/T
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Daqiao Developing Zone Haiyan,Zhejiang Province,China
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within 45 hours
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Product Details
Seamless Precision Steel Tube CK45 DIN2391 Cold Rolled Tube
TORICH is a professional steel tubes supplier from China with over
23 years manufacturing and exporting experience.
Our main products are seamless precision pipe,carbon steel seamless
precision pipe,alloy steel seamless precision pipe, stainless steel
seamless precision pipe.The material we usually use for producing
Seamless Precision Steel Tube CK45 DIN2391 Cold Rolled Tube
is10#,20#,1010,1020,1026,ST37,ST44,E235,E215,E355
Chemical Composition
| Steel grade | C max. | Si max. | Mn max. | P max. | S max. | Altot min. | |
| Name | Number | ||||||
| E215 | 1.0212 | 0.10 | 0.05 | 0.7 | 0.025 | 0.015 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.2 | 0.025 | 0.015 | -- |
| E355 | 1.0580 | 0.22 | 0.55 | 1.6 | 0.025 | 0.015 | -- |
Tolerance
| Outer Diameter | Allowable tolerance | special tolerance | ||
| GB/T3639 | DIN2391 | OD | WT | |
| 4mm-20mm | ±0.10mm | ±0.08mm | ±0.05mm | ±0.05mm |
| 20mm-30mm | ±0.10mm | ±0.08mm | ±0.08mm | ±0.08mm |
| 31mm-40mm | ±0.15mm | ±0.15mm | ±0.10mm | ±0.08mm |
| 41mm-60mm | ±0.20mm | ±0.20mm | ±0.15mm | ±0.15mm |
| 61mm-80mm | ±0.30mm | ±0.30mm | ±0.20mm | ±0.20mm |
| 81mm-120mm | ±0.45mm | ±0.45mm | ±0.30mm | ±0.30mm |
Mechanical Properties
| Steel grade | Yield strengtha | Tensile strength | Elongation | |
| Name | Number | ReH | Rm | A |
| min. | min. | min. | ||
| MPa | MPa | % | ||
| E215 | 1.0212 | 215 | 290 to 430 | 30 |
| E235 | 1.0308 | 235 | 340 to 480 | 25 |
| E355 | 1.0580 | 355 | 490 to 630 | 22 |
Delivery Condition
| Designation | Symbol | Description |
| Cold finished (hard) | BK(+C) | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation |
| Cold finished (Soft) | BKW (+LC) | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding) |
| Cold finished and stress-relieved | BKS(+SR) | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
| Annealed | GBK(+A) | The last Cold forming process is followed by annealing in a controlled atmosphere. |
| Normalized | NBK(+N) | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Seamless Precision Steel Tube CK45 DIN2391 Cold Rolled Tube
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