DIN2391 St35 NBK Cold Drawn Seamless Steel Tube 14x3mm for Engineering Machinery Industry
1.Quick Details:
Standard: DIN2391
Material: St35, St45, St55, St52, St35.2, St45.2, St55.2, St52.2, etc.
Technology: Seamless cold drawn / Seamless cold rolled
Size Range: O.D.: 16 - 168 mm W.T.: 1 - 23 mm Length: Max 12000 mm
Application: for Auto Industry, machinery use, oil cylinder tube, motorcycle shock reducer steel tubes,
Auto shock reducer inner cyclinder, etc.
2.Surface Customize:
Galvanization/Galvanized/Zinc Coated
Blue White Zinc (Trivalent Chromium Passivation)
Plating Colour Zinc(Trivalent Chromium Passivation)
Yellow, Army-Green
Phosphated/Black Phosphated
3.Surface Quality:
Without oxidization, No crack, No fold, No rolling fold, No scar, No laminar defect
4.What we can do in our testing center:
Tensile test
Flattening test
Drift expanding test
Measurement of surface roughness
Dimensional check
Surface inspection
Leak tightness test
Non-destructive test (hydrostatic test, ultrasonic test)
| Delivey Condition | ||
| Designation | Symbol | Description |
| Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
| Cold finished (soft) | BKW | 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 | 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 | The last cold forming process is followed by annealing in a controlled atmosphere. |
| Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Tube Pictures for St35 NBK Cold Drawn Seamless Steel Tube:
Packing Details : In bundles or in wooden boxes packaging
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us.
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