Precision Cold Drawn Steel Tube DIN 2391 Hydraulic Cylinder Pipe
Product Details
Cold Rolled Hydraulic Cylinder Honed Tube
,St52.4 Hydraulic Cylinder Honed Tube
,Din2391 Hydraulic Cylinder Honed Tube
Precision Cold Drawn Steel Tube DIN 2391 Hydraulic Cylinder Pipe
TORICH has been worked for precision cold drawn steel tube industry like DIN 2391 over 20 years, with rich experience in export.
1.Product information of DIN 2391 precision cold drawn seamless steel tube:
| Hydraulic steel tube | |||||
| Standard | Material | Delivery | Surface | Sizes | |
| DIN | 2391/1630/2445 | ST37.4 ST52.4 | NBK | 1) BA 2) 2)Black phosphating 3) Galvanizing | OD 2 -60mm × WT0.3 -10mm |
| EN | 10305-4 | E235 E355 | (+)N | ||
| BS | 3602 | CFS 360 | Zinc Layer thickness more than 8um | ||
| Other steel grades also available upon request | |||||
2. Size range:
OD:2-60mm
Wall thickness:0.3-10mm
Length:Max 13000mm
3. Delivery condition:
The tubes can be produced in the following delivery conditions:
BK (+C) Cold finished/hard (cold finished as drawn).
No heat treatment after the last cold forming process.
BKW (+LC) Cold finished/soft (lightly cold worked)
After the last heat treatment there is a light finishing pass (cold drawing).
BKS (+SR) Cold finished/stress relieve annealed.
After the final cold forming process the tubes are stress relieve annealed.
GBK (+A) Annealed.
After the final cold forming process the tubes are annealed in a controlled atmosphere.
NBK (+N) Normalized. (Mainly focus on)
After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere
4. Main feature of our precision cold drawn steel tube:
High precision
Excellent brightness
No oxidization on outer and inner walls after heat treatment
High cleanness of inside wall
High pressure
No deformation after clod bending
No crack after flaring and flattening
Color : Gray with white
QUALITY CONTROL:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking
5.Application:
Hydraulic system
Automobile
6.Product display from mill:
7. FAQ
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, and it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but you need to 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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