We take 'strengthening management, optimizing service, quality first, reputation first' as our tenet, and provide you with excellent 42CrMo drilling tube, Welding Rotary Positioner, Turning Positioner at a price-performance ratio. We take the brand as the driving force to serve more customers and achieve greater social value. Our company has always adhered to the 'customer first, abide by the contract' purpose, and has formed a sound domestic and foreign marketing network and service system. Since the establishment of our company, we have been adhering to the business philosophy of 'manufacturing with heart, serving with heart' and forge ahead. After years of development, we have provided products and services to many customers at home and abroad with advanced technology, high-quality product quality and perfect service system. The above products have passed professional certification, and we not only can produce OEM-standard products but we also accept Customized Products order.
Tempered Chrome Bar Introduction
Chrome plated bars can be divided into standard bar, induction bar and tempered & quenched bar. Surface of bar goes through special grinding and hard chrome plating process, and then mirror polishing. They always work together with precision tubes.
Tempered Chrome Bar technical parameters and Details
Application: hydraulic cylinder, pneumatic cylinder, oil cylinder, telescopic cylinder.
Original: Jiangsu, China
Certification: ISO9001.
Material: CK45, ST52, E355, 42CrMo4
Payment term: TT, LC
Delivery date: usually 20 to 40 days.
Packing: each packed in peper sleeve, and then in bundle.
Market: Middle East/ Africa/Asia/South America/Europe/North America
MOQ: Depends on exact size and material.
Mechanical Properties:
Material | T.S (MPA) | Y.S (MPA) | Elongation % | CHARPY | CONDITION |
CK45 | ≥610 | ≥355 | ≥15 | >41J | NORMALIZE |
CK45 | ≥800 | ≥630 | ≥20 | >41J | Q + T |
ST52 | ≥500 | ≥355 | ≥22 | NORMALIZE | |
20MnV6 | ≥750 | ≥590 | ≥12 | >40J | NORMALIZE |
42CrMo4 | ≥980 | ≥850 | ≥14 | >47J | Q + T |
40Cr | ≥1000 | ≥800 | ≥10 | Q + T |
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.
Production process
Raw material –peeling – straightening – quenched and tempered – cutting – grinding – straightening – grinding – polishing – chrome plating – polishing - oiled plated - packing

With the vision of becoming the most competitive enterprise and the most valuable company in the world, we are committed to providing customers with valuable Export Hardened and Tempered Chrome Plated Bar and services. Our company will, as always, implement the business principle of 'quality is life, reputation is guarantee', and provide customers with high-quality products and good services. We hope to provide customers with better products, return to shareholders with sustained profit growth and good performance, and benefit the society.
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