With many years of continuous devotion to improving technology, we are capable of providing customers with superlative Round Chrome Bar, Hydraulic Honing Pipe, Precision Seamless Honed Tube featuring comprehensive stability and high quality, and have won their high approval and trust. We continue to strengthen our technical force to achieve reductions in staff and efficiency, optimize labor costs, and improve operational efficiency. In the product development and design, we have achieved pioneering and breakthrough, and directly connect with international products with rich and diversified products. Accurate quality, strict delivery and perfect service are our promise. As operation principle is 'be market-oriented, good faith as principle, win-win as objective', holding on 'customer first, quality assurance, service first' as our purpose, dedicated to provide the original quality, create excellence service, we won the praise and trust in the industry of auto parts.
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.
In order to adapt to the changes in the market, improve the competitiveness of enterprises, meet the diversified needs of customers, our company will be committed to absorbing more professionals, improve the development efforts and technical content and provide high-quality Honed & Skived Tubes of E355 & St52 for Hydraulic Cylinder Use and services for each customer. We take the policy of 'pursuing refinement by quality, change by newness, honesty and customer first' as the action guide, and we are striding towards the goal of zero defect in product quality. In the future, we will continue to adhere to the "customer-centric" philosophy, uphold the values of "sincerity and focus", and continue to work hard to provide customers with better and more considerate services.
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