After-sales Service: | Yes |
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Warranty: | 12 Months |
Type: | Seamless |
Technique: | Cold Drawn |
Material: | Carbon Steel |
Surface Treatment: | Oiled |
Samples: |
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Customization: |
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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. In Changzhou Chengxin, we use hot rolled seamless steel pipes as raw material, and put them to hydraulic cold drawing and heat treating.
Honed tube is internally honed or skived&roller burnished to get very tight tolerance like H8 or H9 and bore roughness of around Ra0.25um.
1. Size range: 40mm*30mm-580mm*500mm
2. Available steel grades:
SAE/AISI: | SAE1020, SAE1026, SAE1045, SAE4130, SAE4140 |
DIN: | ST52, ST52.3, ST52.4 |
EN: | E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470 |
GB: | 20#, 45#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn, |
BK | BKW | BKS | GBK | NBK | Q+T |
+C | +LC | +SR | +A | +N | |
Cold rolled | Cold drawn | Stress relieved | Annealed | Normalized | Quenched+Tempered |
ID range | Tolerance | ID range | Tolerance |
18< d ≤30 | +0/+0.033 | 180< d ≤250 | +0/+0.072 |
30< d ≤50 | +0/+0.039 | 250< d ≤300 | +0/+0.081 |
50< d ≤80 | +0/+0.046 | 300< d ≤315 | +0/+0.081 |
80< d ≤120 | +0/+0.054 | 315< d ≤400 | +0/+0.089 |
120< d ≤180 | +0/+0.063 | 400< d ≤500 | +0/+0.097 |
1. MOQ: Generally Min Order Quantity can be 2-3 tons/size for tubes with OD below 250mm, and 10 tons/size for tubes with OD above 250mm. Sometimes, it depends on steel grade you need. If you need special grade like E410, E470 or alloy steel tube, MOQ should be 10 tons/size at least.
2. Delivery Time: Generally, our delivery time for honed tubes is around 40-60 days depending on the sizes and quantities. It will take us 15-30 days to get raw material. For example, if you need 3 tons of small size honed tubes 50mm*40mm with roughness of Ra0.25um max, it will take us at least 30 days to hone this size.We are a manufacturer of cold drawn, cold rolled, and hydraulic cold drawn steel tubes with OD upto 356mm since 2002. Covering an area of about 32000M2, we have 12 standard workshops with 2 hydraulic cold drawing benches, 4 chain cold drawing benches, and 2 ERW mills. Our facilities covers all the production procedures from pickling, cold drawing, heat treating, saw cutting, straightening, inspection, packing to further machining &turning, cold drawing die fabrication, and equipment repairation&maintenance.
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