EN10305-4 E355 Hard Chrome Plated Precision Rod for Hydraulic Pneumatic Cylinders Mechanical Engineer
EN10305-4
seamless precision bending steel tubes of hydraulic systems
Size for Precision Steel Tube: 5-100mm
Delivery condition for Precision Steel Tube: +N, +C,+LC, +SR, +A
1. Standard for Precision Steel Tube:
EN10305-4 Cold drawn Precision Seamless Steel Pipes
2. Steel Grade for Precision Steel Tube:
E215,E235,E355, other materials upon agreement with customers.
3. Production method for Precision Steel Tube:
Cold drawing on the seamless steel tubes, to reach high accuracy on the OD and WT tolerance,
with certain heat treatment to achieve better mechanical properties for bending and pressure purposes
4.Size range for Precision Steel Tube:
O.D.:5-100mm
W.T.:1-15mm
L:max12000mm
5. Packing for Precision Steel Tube:
In Hexagonal Bundles, wth anti-rust oil protection, with seaworthy packing
6.Deliver condition for Precision Steel Tube:
+N After the final cold drawing operation the tubes are normalized in a controlled atmosphere
Please specifiy the final heat treatment when sending the enquiry.
7.Inspection and testing for Precision Steel Tube:
Chemical analysis
Tensile test
Flattening test or Drift expanding test
Dimensional inspection
Visual examination
NDT for verification of leaking tightness
Chemical Composition for Precision Steel Tube:
| Steel Grade | Chemical Components (%) |
| Steel Name | Steel Number | C max. | Si max. | Mn max. | P max. | S max. | AL min. |
| E215 | 1.0212 | 0.10 | 0.05 | 0.7 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.2 | 0.025 | 0.025 | / |
| E355 | 1.058 | 0.22 | 0.55 | 1.6 | 0.025 | 0.025 | / |
Mechanical proporties for Precision Steel Tube:
| Mechanical properties at room temperature |
| Steel Grade | Minimum values for the delivery condition |
| Steel Name | Steel Number | +C | +LC | +SR | +A | +N |
| Rm Mpa | A % | Rm Mpa | A % | Rm Mpa | ReH Mpa | A % | Rm Mpa | A % | Rm Mpa | ReH Mpa | A % |
| E215 | 1.0212 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290 to 430 | 25 | 30 |
| E235 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340 to 480 | 235 | 25 |
| E355 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490 to 630 | 355 | 22 |
Delivery Conditions for Precision Steel Tube:The tubes shall be manufactured from hot finished seamless tubes by cold drawing or other suitable processes. The tubes shall be supplied in one of the delivery conditions as follows:
| Designation | Symbol | Description |
| Cold drawn/hard | +C | No heat treatment after the final cold drawing process. |
| Cold drawn/soft | +LC | After the final heat treatment there is a suitable drawing pass. |
| Cold drawn and stress relieved | +SR | After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere. |
| Annealed | +A | After the final cold drawing process the tubes are annealed in a controlled atmosphere. |
| Normalized | +N | After the final cold drawing operation, the tubes are normalized in a controlled atmosphere. |
Delivery Condition Symbol in accordance with EN10305 and DIN2391
| Symbol in accordance with EN 10305 | Symbol in accordance with DIN2391 |
| +C | BK |
| +LC | BKW |
| +SR | BKS |
| +A | GBK |
| +N | NBK |
Production Pictures for EN10305-4 E355 Hard Chrome Plated Precision Rod
Production Process for EN10305-4 E355 Hard Chrome Plated Precision Rod
Production Workshop for EN10305-4 E355 Hard Chrome Plated Precision Rod
Delivery and Packing of EN10305-4 E355 Hard Chrome Plated Precision Rod
FAQ for EN10305-4 E355 Hard Chrome Plated Precision Rod
Q: Are you trading company or manufacturer?
A: We are a professional steel pipes materials manufacturer.
Q: How long is your delivery time?
A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.
Q: Do you provide free samples?
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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