Transport Seamless Honed Precision Steel Tube Oil Gas Sewage For Hydraulic Cylinder
I.D.: 40-400mm
W.T.: ≥5mm
Technique: Cold Draw
Alloy Or Not: Non-alloy
Place Of Origin: Zhejiang, China (Mainland)
Surface Treatment: As Customer's Required
Length: Up To 12000mm According To Customer's Requirement
Material: 20#,45#,Q345B,Q345D,25Mn,27SiMn,E355
Standard: GB/T3639, GB/T8713, EN10305-1:2002, EN10305-2:2002, ASTM A519-2006, ASTM A513-2007, GB/T1591-2008, GB/T17396-2009
Applications:
for Auto industry
for machinery use
Oil Cylinder Tube
Motorcyle shock absorber
Auto shock absorber innder cylinder
Telescopic Cylinders
Size range:
ID.: 20-650mm W.T.:1-50mm L:max12000mm
Steel Grade:
E155, E195, E235, E275, E355. S45C
Steel Grade and Chemical Compositions
| Steel Grade | C | Si | Mn | P | S | |
| Steel Name | Steel Number | max | max | max | max | max |
| E155 | 1.0033 | 0.11 | 0.35 | 0.70 | 0.025 | 0.025 |
| E195 | 1.0034 | 0.15 | 0.35 | 0.70 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 |
| E275 | 1.0225 | 0.21 | 0.35 | 1.40 | 0.025 | 0.025 |
| E355 | 1.0580 | 0.22 | 0.35 | 1.60 | 0.025 | 0.025 |
Heat treatment method:
+Cc, +LCc, +SR, +Ad, +N
Note: Special steel grade is also available, according to customer request.
Please specify the steel grade and heat treatment mothod when sending the enquiry!
ID Honing
The honing process makes :
1.Smooth surface finishes inside bores
2.Hold precise tolerances on bore diameters
ID H7 H8 H9
ID roughness 0.2-0.8μm
ID max 630mm
Roller Burnish+ Skiving
Two thin chips are cut at high feed rate while the tool passes through the workpiece.producing super finish surface,with a bore precise tolerance .
ID H7 H8 H9
ID roughness 0.2-0.8μm
ID max 630mm
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.
Packing Details : In bundles or in wooden boxes packaging of honed tube
Delivery Details : 30-60days
In hexagonal bundles packaging with woven
In hexagonal shaps,the tubes will be well fixed,so it can avoid the damages when delievey .
In wooden boxes.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.