Precision Steel Tube Cold Drawn Carbon Seamless Steel Pipe DIN2391 St35 St45 St37.0 St37.4 St52.0 St30Si
Product Description:
Torich supply Precision Steel Tubes size from OD 4 mm to OD80 mm,Wall thickness from WT 0.5 mm to WT 10 mm ,Length max 12m ,Could Cut to length for your special requests.Material ST 35,St45,St52 St30Al,St 30Si,Other materials upon agreement with customers.
Standard: DIN2391
Size Range: OD: 4-80mm
WT: 0.5-10mm
Length: 1-12m
Steel Grade: 10#, 20#, 16Mn, ST35, St45, St52
1.Production method:
Cold Drawn on the Seamless Steel Tubes, to reach high accuracy on the OD and WT tolerance
2.Features:
Smooth inner and outer surfaces
Available in a variety of outer diameter sizes
Good raw material quality
Narrow tolerance
3.Deliver condition:
1). BK Cold finished (hard)
2). BKW Cold finished (soft)
3). BKS Cold finished and stress relieved
4). GBK Annealed
5). NBK Normalized
4.Relative standard:
DIN2391 Precision Seamless Steel tubes for precision hydraulic systems
DIN2393 Precision Welded Steel tubes for precision hydraulic systems
Product Pictures:
5. Steel Grade and Chemical Compositions:
| Grade | C max | Si max | Mn | P max | S max |
| ST35 | 0.17 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| ST45 | 0.21 | 0.35 | ≥0.40 | 0.025 | 0.025 |
| ST52 | 0.22 | 0.35 | ≥1.60 | 0.025 | 0.025 |
8.Mechanical properties
| Grade | Condition | Tensile Point(Mpa) | Yield Point(Mpa) | Enlongation |
| ST35 | BK | ≥440 | | ≥6% |
| | BKW | ≥370 | | ≥10% |
| | GBK | ≥315 | | ≥25% |
| | NBK | 340-470 | 235 | ≥25% |
| ST45 | BK | ≥540 | | ≥5% |
| | BKW | ≥470 | | ≥8% |
| | GBK | ≥390 | | ≥21% |
| | NBK | 440-570 | 255 | ≥21% |
| ST52 | BK | ≥590 | | ≥5% |
| | BKW | ≥540 | | ≥7% |
| | GBK | ≥490 | | ≥22% |
| | NBK | 490-630 | 355 | ≥22% |
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 for Precision Steel Tube Cold Drawn Carbon Seamless Steel Pipe DIN2391 St35 St45 St37.0 St37.4 St52.0 St30Si
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.
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
Precision Steel Tube Cold Drawn Carbon Seamless Steel Pipe DIN2391 St35 St45 St37.0 St37.4 St52.0 St30Si
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