The company values the concept of making accurate and high-quality downhole motor seamless tube, Head & Tail Lifting Welding Positione, Ck45 Hydraulic Steel Tube. We take 'diligence, unity, innovation, gratitude' for the spirit of enterprise and 'for the sake of employees, satisfying customers' as our business philosophy, and provide customers with products and services that exceed their expectations. Our company has set up a bridge of friendship with friends from all walks of life in the world and is committed to increasing the glory and heat of the industry. All colleagues of our company hand in hand to offer a bright pearl. Based on the implementation of total quality management, we provide sophisticated technology and equipment, advanced and rational design, and specialized production. We will continue to expand resources and strive to build our company into the most competitive enterprise in the industry.
Ck45 Steel Honed Pipe 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.
Ck45 Steel Honed Pipes 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 |
Size list: (if you need other sizes, please let us know)

Honed Tubes characteristics
1. The inside tolerance could up to H8.
2. Honing Inside roughness could reach to Ra 0.4um. Skiving inside could reach to Ra 0.2 um.
3. ID size from 50 to 280mm, OD size from 60 to 370mm, totally has more than 200 sizes.
4. Length could be fixed length of random length.
5. Inside chrome plated is for optional.
Experience and markets
Our factory has more than 20years working experiences on researching and selling. Products are well sailed all over the world, got many compliments from customers.
Our Advantages
a. Extensive production experience: we are specialized in honed tubes, skived tubes, cold drawn pipe, and chrome bar with an experience of 20 years.
b. Complete production facilities: owning cold drawn machine, skived and roller burnished machine, honing machine, precision centerless grinding machine, straightening machine, fine polishing machine, precision lathe, milling and drilling machine, roller press and other advanced equipments. Our technicians will do regular scheduled maintenance on these machines to guarantee them work well.
c. Strict Physical/Chemical testing procedures: meeting the requirements of the product design and process, providing reliable testing data.
d. Short Delivery time: Usually one container 20 days. We also stock some standard-sized tubes and bars.
e. Safe packing: anti-rust oil be spread on tubes and bars before shipping, plastic caps on tube ends to protect inside surface, each bar be protected with cardboard tube.
Reasonable Rate and Efficient Service' for Honed Pipes for Hydraulic Cylinders St52 Bks DIN2391. For a long time, our company has accumulated rich practical experience in production, and has advanced production technology and high degree of automation as we actively relied on scientific and technological progress. We always firmly believe that innovation is the way to achieve success, integrity is the foundation of a hundred years of business, we wholeheartedly provide you with reliable quality products and satisfactory service, welcome the new and old customers from all walks of life to patronize and guide!
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