Seamless Cold Drawn DIN2391 17mm Precision Steel Tube for Hydraulic System
| Product name: | DIN2391 Cold Drawn Pipes 17mm High Precision Seamless Steel Tube |
| Standard: | DIN2391-2, EN10305-1, GB/T3639, GB/T8163, GB/T14976, EN10216-5... |
| Grade: | 10#, 20#, 45#, Q345, E255, E355,etc. |
| Technical: | Cold Drawn or Cold Rolled |
| Size Range: | OD: 4-200 mm WT: 0.5-22 mm Or according to customers' actual application and production. |
| Application: | Structural, Machinery,etc. |
Quality grades
Tubes shall be supplied in the following quality grades:
for precision steel tubes, that do not require an inspection certificate and thus are not subject to special requirements, grade A;
for precision steel tubes subject to special requirements, grade C.
In accordance with the stated demands of the purchaser, such special requirements and the relevant test methods shall
be the subject of agreement.
Main feature
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
Type of test or inspection
Tensile test, Flattening test, Drift expanding test, Measurement of surface roughness
Dimensional check, Surface inspection, Leak tightness test, Non-destructive test,
Physis laboratory, Chemical spectrometer, Pressure blasting machine, Metallographic analysis, Salt Spray Test
Delivery Condition: BK(+C), BKW(+LC), BKS(+SR), GBK(+A),NBK( +N)
| BK (+C) Cold finished/hard | No heat treatment after the last cold forming process. |
| BKW (+LC) Cold finished/soft | 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. | After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere |
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
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects
Product Display of Precison Steel Tube for Hydraulic System
Packing & Delivery
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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Seamless Cold Drawn DIN2391 17mm Precision Steel Tube for Hydraulic System Images
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