We adhere to the product positioning of specialized and high-quality, and take the creation of high-end brands as our own responsibility, leading the domestic and even global 30crmo Cold Drawn Seamless Tube, Hydraulic Chrome Rod, Welding Rotator products to be personalized and intelligent. Our company adheres to the concept of 'quality-oriented, reputation as the soul, and people-oriented' to provide customers with high-quality, fast and complete services. We are willing to work together with our customers to create a better future! We start from serving local enterprises and customers, starting from providing a single product, starting from the little things that are never known and accumulating step by step and year by year. Welcome your visiting and any your inquires, sincerely hope we can have chance to cooperate with you and we can build up long well business relationship with you.
Ck20 Steel 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.
Ck20 Steel 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 |

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.

We rely on the business philosophy of honesty, adhere to the development policy of 'high starting point, high quality, specialization', we will definitely become the future model of the Honed Seamless Steel Tube of St52 for Hydraulic Cylinder industry. We adhere to the tenet of 'do professional things with a professional heart' to provide customers with high-quality products and perfect after-sales service. Welcome domestic and foreign merchants to visit us. Our company has a R&D and management team composed of high-quality elites, and has established a complete development and scientific research center.
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