We strictly control product quality, making our 30crmo Cold Drawn Seamless Tube, Welding Turning Roll, Seamless Honed Steel Tube sell well abroad. Our company takes 'serving customers and creating value' as the core and takes the needs of users as the center. Our company continues to absorb advanced mature technology and develop new products according to market demand.
Ck20 Cold Drawn honed Tube Introduction
Honed Tubes are presicion tubes with smooth inside, they also could be skived and burnished pipe. Tubes or pipes inside tolerance could be H10, H9 or H8. Outside tolerance, wall thickness tolerance are produced according to seamless cold drawn tubes for precision application standard GB/T3639-2009,EN10305 or DIN2391 standard. Material SAE1020, 20#, ST45, CK45, ST52, E355 tubes and so on for you to choose.
Cold Drawn honed Tubes technical parameters and Details
Application: hydraulic cylinder, pneumatic cylinder, oil cylinder, telescopic cylinder.
Original: Jiangsu, China
Certification: ISO9001.
Material: SAE1020, 20#, ST45, CK45, ST52, E355
Payment term: TT, LC
Delivery date: usually 20 to 40 days.
Packing: packed in bundle, oiled inside, with caps on both ends.
Market: Middle East/ Africa/Asia/South America/Europe/North America
MOQ: Depends on exact size and material.
Size and Tolerance:
Working method | Cylinder ID (mm) | Length (m) | Straightness (mm/m) | Tolerance on ID | Tolerance on WT | Roughness (μm) |
Cold drawn | 40-320 | ≤12M | 0.2-0.5 | / | ±5% | 0.8-1.6 |
Cold rolling | 30-100 | ≥12M | 0.2-0.5 | / | ±5% | 0.8-1.2 |
cold drawn- honed | 40-500 | 8M | 0.2-0.3 | H8-H9 | ±5% | 0.2-0.8 |
Cold drawn-skived | 40-400 | 7M | 0.2-0.3 | H8-H9 | ±5% | ≤0.4 |
Deep hole boring- honed | 320-400 | 8M | 0.2-0.3 | H7-H9 | ±8% | ≤0.8 |
Deep hole boring- skived | 320-400 | 7M | 0.2-0.3 | H8-H9 | ±8% | ≤0.4 |

Quality control
1. We only buy raw material from famous tube factory, and Checking raw material quality before production.
2. We check the tube ID tolerance, OD tolerance and surface after cold drawn one by one.
3. We inspect the honed tube inside tolerance and surface again one by one after honing or skiving.
Packaging & Delivery
Packaging Details | in bundle, with plastic caps, anti-rusted oiled, with woven bags |
Delivery Time | Shipped in 20 days after payment |

FAQ
1. Q:Are you a manufacturer, trading company or a third party?
A:We are a manufacturer, and we have builded up our company since 2001.
2. Q:Where is your factory located?
A:Our factory address is : Hengtong road, Yangshan Town, Huishan District, Wuxi City, Jiangsu Province, China.
3. Q:How can i get to your factory?
A:Our factory is near shanghai Airport, and then you could take fast train from Shanghai to Wuxi Station.
4. Q:If i will need to stay in your place for few days, is that possible to book the hotel for me?
A:It’s always my pleasure, hotel booking service is available.
Your requirements are our work, we will provide you with the finest quality St52 St52.3 E355 16mn Q345b/D Highprecision Cold Drawn Seamless Steel Tube/Pipe for Hydraulic Honed Tube and the most satisfying service! The company is committed to the development of new products in the market and pursues the principle of improving product quality and treating customers wholeheartedly. Whether it is to create performance or to improve competitiveness, we can not make any compromise on our commitment to integrity.
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