
1. Description: Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder.
2. Commodity: Cold drawn steel tube for hydraulic cylinder honed pipe
3. Size range: 40mm*30mm-580mm*500mm
4. Available steel grade:
EN 10305-1 |
E195, E235, E355, C35E, C45E, E410, E470, S355J2, S355J2G3, 25CrMo4, 34CrMo4, 42CrMo4 |
DIN 2391-2 |
ST37, ST44, ST52 |
ASTM A519 |
1010, 1020, 1026, 1045, 1518, 1524, 1541, 4130, 4140, 4145, 4340, 8620 |
JIS |
STKM 13A, STKM 13B, STKM 13C |
GB |
Q345B, 25Mn, 16Mn, Q345D, Q345E, 20#, 45#, 20CrMo, 25CrMo, 30CrMo, 35CrMo, 42CrMo |
5. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring
6. Delivery condition:
BK |
BKW |
BKS |
GBK |
NBK |
Q+T |
+C |
+LC |
+SR |
+A |
+N |
|
Cold rolled |
Cold drawn |
Stress relieved |
Annealed |
Normalized |
Quenched+Tempered |
7. Bore treatment: Honing, skiving&roller burnishing
8. Bore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes.
9. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes.
10. Standard export packing: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags.
11. Customized packing and marking can be provided upon request.
12. Difference between honed tube and skived&roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness.
Hydraulic Cylinder Honing Tube |
|||||
Inside Dia (mm) |
ID Tolerance (mm) |
WT Tolerance (mm) |
|||
H7 |
H8 |
H9 |
H10 |
||
≤30 |
+0.021/0 |
+0.033/0 |
+0.052/0 |
+0.084/0 |
±7.5% >210mm ±10% |
30 - ≤50 |
+0.025/0 |
+0.039/0 |
+0.062/0 |
+0.100/0 |
|
50 - ≤80 |
+0.030/0 |
+0.046/0 |
+0.074/0 |
+0.120/0 |
|
80 - ≤120 |
+0.035/0 |
+0.054/0 |
+0.087/0 |
+0.140/0 |
|
120 - ≤180 |
+0.040/0 |
+0.063/0 |
+0.100/0 |
+0.160/0 |
|
180 - ≤250 |
+0.046/0 |
+0.072/0 |
+0.115/0 |
+0.185/0 |
|
250 - ≤315 |
+0.052/0 |
+0.081/0 |
+0.130/0 |
+0.210/0 |
|
315 - ≤700 |
+0.057/0 |
+0.089/0 |
+0.140/0 |
+0.230/0 |
Steel Grade |
Chemical Composition % |
|||||
C |
Si |
Mn |
P |
S |
Al |
|
≤ |
≥ |
|||||
20# |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
0.035 |
0.035 |
/ |
45# |
0.42-0.50 |
0.17-0.37 |
0.50-0.80 |
0.035 |
0.035 |
/ |
Q345B |
≤0.2 |
≤0.5 |
1.00-1.60 |
0.03 |
0.03 |
/ |
Q345D |
≤0.2 |
≤0.5 |
1.00-1.60 |
0.03 |
0.03 |
0.015 |
25Mn |
0.22-0.29 |
0.17-0.37 |
0.70-1.00 |
0.035 |
0.035 |
/ |
27SiMn |
0.24-0.32 |
1.10-1.40 |
1.10-1.40 |
0.035 |
0.035 |
/ |
ST52 |
≤0.22 |
≤0.55 |
≤1.6 |
0.025 |
0.025 |
/ |
SAE1026 |
0.22-0.28 |
0.15-0.35 |
0.60-0.90 |
0.04 |
0.05 |
/ |
Delivery Condition |
Cold Finished (hard) (BK) |
Cold Drawn and Stress-relieved (BK+S) |
|||
Steel Grade |
Tensile Strength |
Elongation |
Tensile Strength |
Yield Strength |
Elongation |
20# |
≥550 |
≥8 |
≥520 |
≥375 |
≥15 |
45# |
≥640 |
≥5 |
≥600 |
≥520 |
≥10 |
16Mn |
≥640 |
≥5 |
≥600 |
≥520 |
≥14 |
25Mn |
≥640 |
≥5 |
≥600 |
≥510 |
≥15 |
27SiMn |
≥800 |
≥5 |
≥760 |
≥610 |
≥10 |
ST52 |
≥640 |
≥5 |
≥600 |
≥520 |
≥14 |
SAE1026 |
≥640 |
≥5 |
≥600 |
≥510 |
≥15 |
FAQ
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties’ inspections are all available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q13:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.
Q14:What is your working time?
A:In general, When you first contacted us, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day. Business in progress, we will be online 24 hours for you.
If you are interested in our products, you can contact me at any time and look forward to our cooperation!
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