ST45 ST52 honed tubes are used for manufacturing or repairing hydraulic cylinders. They are produced from ST45 and ST52 cold drawn seamless steel tubes. The inner diameter is achieved by ID honing or SRB (skimming and rolling). ST45 and ST52 honed tubes have precise ID tolerances and smooth and bright surface finish.
Delivery conditions: BK, BK+S, NBK
ID range: wide range of metric and imperial sizes, 40-450mm.
ID tolerance: H7, H8, H9
Length: 5-8m at will or fixed length up to a maximum of 14m.
Straightness: ≤0.5/1000
ID roughness: 0.2-0.4um
ST45 ST52 Cold Drawn Steel Pipe Specification
| Product Name | Honed Pipe |
| Technique | Cold Rolled/Cold Drawn |
| Material | 10#,20#,35#,45#,Q345B 20cr,40Cr,20CrMo 6mn 27simn 304 201 310S etc. |
| Standard | ASTM A106 ASTM A53 ASTM A179 ASTM A210 ASTM A213 GB/T3639 DIN 2448 DIN1629 DIN1626 DIN2391 DIN2444 EN10025etc. |
| Outside Diameter | 10mm-1020mm or as your request |
| Thickness | 2mm-80mm or as your request |
| Length | Single random length/double random length 5m-14m 2-12m |
Chemical Composition:
| Standard | Grade | Chemical Components (%) | |||||
| Symbol | Material No. | C | Si | Mn | P | S | |
| DIN2391 | St45 | ≤0.21 | ≤0.35 | ≥0.4 | 0.025 | 0.025 | |
| DIN2391 | St 52 | 1.058 | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.025 | ≤0.025 |
FAQ
Q: Can we visit your factory?
A: Of course, you are welcome to visit our factory, check our production line and learn more about our strength and quality.
Q: Do you have a quality control system?
A: Yes, we have ISO, BV, MTC certifications and our own quality control laboratory. Third-party testing services are also available
Q: Can you arrange shipment for us?
A: Yes, we have designated sea and railway freight forwarders with decades of experience, we get the best price with the earliest ships and professional services.
Q: How long is your delivery time?
A: Generally it is 7 days if we have the exact goods in stock. If not, it will take about 15-20 days to prepare the goods for delivery.
Q: Can I get some samples?
A: We are happy to provide you with free samples, but we do not provide shipping costs.
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