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Specifications
plunger cylinder honed pipe1. Widely used in hydraulic cylinder
2. Best reputation
3.Top Service
plunger cylinder honed pipe
1.Usually Description of honed tube for hydraulic cylinder :
| product name | honed tube for hydraulic cylinder |
| Standard | DIN 2391 EN10305 DIN17175 |
| Wall Thickness | 3-40mm |
| Out Diameter | 36-480mm |
| Material | ST 44 ST 52 |
| Steel Grade | 20# 45# 16Mn ST 45 ST 52 |
| Length |
Length Length ≤ 500mm , +2mm
|
| The end | Tube ends Tube ends shall be cut nominally square to the axis and free from burs |
2.Variety of honed tube :
Processing form |
I.D.mm |
Length |
Straightness |
I.D.tolerance |
I.D.Roughness(RA) |
Cold-rolled |
30-100 |
≤12M |
0.3-1.0/1000 |
H8-H10 |
0.4-1.6um |
Cold-drawn |
30-250 |
≤12M |
H8-H10 |
0.8-1.6um |
|
Hone |
40-500 |
≤12M |
H8-H9 |
0.4-0.8um |
|
SRB |
50-250 |
≤9M |
H8 |
0.1-0.4um |
3. Tolerance of ID and WT of honed tube:
|
Size of inside Diameter(mm) |
ID Tolerance |
Tolerance of wall thickness |
||
30 |
+0.0330 |
+0.0520 |
+0.0840 |
<120mm(OD) ±5% >120mm up to 210mm±7.5% >210mm ±10%
|
>30-50 |
+0.0390 |
+0.0620 |
+0.1000 |
|
>50-80 |
+0.0460 |
+0.0740 |
+0.1200 |
|
>80-120 |
+0.0540 |
+0.0870 |
+0.1400 |
|
>120-180 |
+0.0630 |
+0.1000 |
+0.1600 |
|
>180-250 |
+0.0720 |
+0.1150 |
+0.1850 |
|
>250-315 |
+0.0810 |
+0.1300 |
+0.2100 |
|
>315-400 |
+0.0890 |
+0.1400 |
+0.2300 |
|
4.OD Tolerance of st52 honed tube:
| Name | (Scope)mm | (GB Series)mm | (DIN Series)mm | Enterprise internal Control standards mm | (Special high-precision)mm |
| O D | 4-30 | +-0.10 | +-0.08 | +-0.05 | +-0.03 |
| O D | 31-40 | +-0.15 | +-0.15 | +-0.05 | +-0.03 |
| O D | 41-50 | +-0.20 | +-0.20 | +-0.08 | +-0.03 |
| O D | 51-60 | +-0.25 | +-0.25 | +-0.08 | +-0.03 |
| Wall thickness | 0.5-7 |
+-10% (MIN)+-0.12 |
+-10% | +-10%(MIN)+-0.05 | +-10%(MIN)+-0.03 |
Production Process:
- Pretreatment : Pickling—Phosphating—Saponification
- Cold drawn/cold rolled
- Annealing furnace——+SR
- Straightener—— Straightening
- Straightness inspecting
- Dimension inspecting
- Sawing
- Lathe
- Polishing
- Products inspecting
- Finished Products
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