NEW-ERA STEEL TUBE HOLDING
NINGBO PIPEWAY TRADE CO.,LTD
| Place of Origin: | China |
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| Brand Name: | Pipeway |
| Certification: | ISO 9001 ， TS16949 |
| Model Number: | DIN2391 Precision Seamless Steel Tube |
| Minimum Order Quantity: | 1 tons |
| Packaging Details: | Bundles Packages |
| Delivery Time: | 30 days |
| Payment Terms: | T/T |
| Supply Ability: | 3000 tons per month |
| Shape: | Round | Surface: | Galvanized, Black, Polished, Oiled |
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| Technique: | Cold Rolled, Cold Drawn | Tolerance: | ±0.05mm |
| Ends: | Plain | Package: | Standard Export Package |
| Surface Treatment: | Bright And Clean | Material: | Steel |
| Highlight: | DIN2391 Precision Seamless Tubes,St52 Precision Seamless Tubes,Seamless Precision Tubes |
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Material & Chemical Composition
| Material Name | St35 | St45 | St52 |
| chemical analysis | C: ≤0.17;Si: ≤0.35;Mn: ≥0.40;P: ≤0.025; S: ≤0.025; | C: ≤0.21;Si: ≤0.35;Mn: ≥0.40;P: ≤0.025; S: ≤0.025 | C:≤0.22;Si: ≤0.55;Mn: ≤1.60;P: ≤0.025; S: ≤0.025 |
| Tensile Strength | BK, ≥480MPa; BKW, ≥420MPa;BKS, ≥420MPa;GBK, ≥315MPa;NBK,340-470MPa | BK, ≥580MPa; BKW, ≥520MPa;BKS, ≥520MPa,GBK, ≥390MPa, NBK 440-570MPa | BK, ≥640MPa; BKW, ≥580MPa;BKS, ≥580MPa;GBK, ≥490MPa;NBK,490-630MPa |
| Yield strength | BKS, ≥315MPa; NBK, ≥235MPa |
BKS,≥ 375MPa; NBK≥255MPa |
BKS, ≥420MPa; NBK, ≥355MPa |
| Standard | DIN2391 | ||
| Length | 5-5.8M, 5.8M fixed length, or as customer's request | ||
| Packaging | Bundles Package, wooden box | ||
| Heat Treatment/ Delivery Condition |
1.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 2.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) 3.Cold finished and stress-relieved annealing 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. 4.Annealed GBK(+A) The last Cold forming process is followed by annealing in a controlled atmosphere. 5.Normalized NBK(+N) The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
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| Delivery Time | 45 days | ||
| Payment Term | 30% TT in advance, Balance to be paid before shipment | ||
| Usage/Application | Truck drag link, automotive parts | ||
| Surface | free of oxide scale, bright | ||
Keywords: DIN2391, Seamless steel tubes, Bright Annealing Tubes