| Customization: | Available |
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| Certification: | ISO9001 |
| Pressure: | Low or High |
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| Type: | High-precision cold-drawn seamless tube |
| Standard: | GB/T3639-2018, GB/T 5777-2008,the technology agreement |
| Material steel: | 45#, 16Mn(Q345B), 25Mn, 27SiMn, SY720, ZNP460 |
| Internal diameter Tolerance: | H8, H9,H10 |
| Straightness rate/roundness rate/mechanical performance : | As agreement |
| Chrome-plated | As request |
| Size: | 100mm-500mm |
| Shape: | Round, square |
| Package: | As request |
| Usage: | 1. For oil cylinder's outside cylinder and piston rod; 2. For transportation of natural gas, oil, kerosene, etc to avoid leakage; 3. For making parts of some machines such as the drive shaft of an automobile or the drill pipe of oil and bicycle frames; 4. For some large machinery such as boiler heating supply pipe; 5. For the storage of liquefied natural gas such as taxi trunk cylinders. |
| Our Advantages / Why choose us |
| 1. We have our own factory with 29,000 square meters in the hometown of heavy industry, |
| Changsha City, Hunan Province. |
| 2. We have 16 years experience in the field with powerful RD and machining equipment. |
| 3. We have 13 effective utility patents and 80 sets of production and test equipment. |
| 4.We focus on cylinder and accept OEM and ODM processing. |
| 5. We follow ISO9001 and have established long-term co-operation with Zoomlion, |
| ZMJ and LiuGong. |
| FAQ |
| Q1. Are you a factory or a trading company? |
| We are a factory focusing on hydraulic engineering. |
| Q2. Do you have your own brand? |
| Yes, we have. Our brand is CSDLS. |
| Q3. Do you accept sample orders? |
| Yes, we do. |
| Q4. What about your warranty? |
| One year since delivery. |
| Q5. What are your payment terms? |
| T/T, L/C,OA |
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