Our company is a company specializing in the production of medium and high-end Precision Seamless Steel Honing Pipe, Hard Chrome Plated Steel Tube, 30crmo Cold Drawn Seamless Tube, with nearly ten years of enterprise accumulation and professional rich experience, with an independent product research and development center and an excellent team of designers, devoting to the research and development of high-quality mid-priced products. We are committed to achieving quality and service standards in all business areas and everywhere. We have implemented a strict and complete quality control system, which ensures that each product can meet quality requirements of customers. Based on the business philosophy of 'quality determines success or failure, technology determines development, and users determine survival', we put the interests of customers at a high level during development, and provide them with professional and thoughtful services anytime, anywhere. Make sure provide the best Service, the Best Quality, The fast Delivery.
Ck45 Cold Drawn Tube Introduction
Cold drawn steel pipe is 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. ID and OD tolerance could be decided by customer. IF you are looking for seamless cold drawn pipe for hydraulic cylinder pipes or pneumatic cylinder tubes, please contact us without any hesitation.
Ck45 Cold Drawn Tube 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, with caps on both ends.
Market: Middle East/ Africa/Asia/South America/Europe/North America
MOQ: Depends on exact size and material.
Mechanical Properties:
Final Supply | Cold finished | Cold drawn and stress-relieved (BK+S or + SR) | Hardness HB | |||
Parameters | T.S | Elongation | T.S | Y.S | Elongation | |
20# (A106B, ST45, E255) | ≧550 | ≧8 | ≧520 | ≧375 | ≧12 | 175 |
45#(CK45) | ≧650 | ≧5 | / | / | / | 207 |
Q345B(ST52, E355) | ≧640 | ≧5 | ≧600 | ≧520 | ≧15 | 190 |
25Mn | ≧640 | ≧5 | ≧600 | ≧510 | ≧15 | 195 |
27SiMn | ≧840 | ≧5 | ≧800 | ≧720 | ≧10 | 230 |
Cold drawn steel pipe characteristics
1. The inside tolerance could be decided by customer. It depends on if it is ready for hone or ready for skived.
2. ID size from 50 to 280mm, OD size from 60 to 370mm, totally has more than 200 sizes.
3. Length could be fixed length of random length.
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. High quality raw material: we mainly choose raw material from big steel factory, such as AN STEEL, TPCO, BAO STEEL, SHA STEEL, which are best and largest raw material manufacturer in China.
d. Strict Physical/Chemical testing procedures: meeting the requirements of the product design and process, providing reliable testing data.
e. Short Delivery time: Usually one container 20 days. We also stock some standard-sized tubes and bars.
f. 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.
We're going to commit ourselves to giving our esteemed buyers using the most enthusiastically considerate solutions for C45e Ck45 Cold Drawn Seamless Hydraulic Honed Steel Tube for Hydraulic Cylinder Barrel. In the era of knowledge economy and e-commerce, we also use the powerful functions of the Internet to provide convenient and fast services for customers. We adhere to the business philosophy of 'taking science and technology as the guide and innovation as our responsibility', and continue to develop new products and improve quality.
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