The company is located at No. 1, Baihe Road, Hudai Town, Binhu District, Wuxi City. It is a professional manufacturer registered with the permission of relevant national departments. Its products are rich and diverse, covering a variety of high-quality steels such as cold-drawn round steel and cold-drawn round steel. Cold-drawn steel series products are widely used in many key industries, from high-strength fasteners for wind power anchor bolts to automotive parts, from medical components to logistics machinery and equipment, demonstrating its excellent quality and wide applicability.
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SAE 1045 Carbon Steel Black Bar
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AISI 1045 High Carbon Steel Bars
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High Carbon AISI 1045 Steel Round Bar
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SAE 1018 Carbon Steel Bright Bar
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High Strength Polished Steel Rod
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SAE1045 High Strength Polished Steel Rod
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Why Choose Us
High Quality
From cold-drawn bright round steel to cold-drawn silver-bright round steel, from cold-drawn square steel to cold-drawn hexagonal steel, the rich product variety meets the needs of different customers.
Advanced Equipment
Our company boasts a comprehensive range of equipment. From advanced production machinery like automated assembly lines to state - of - the - art inspection tools, we're well - equipped to meet diverse manufacturing demands.
Professional Team
Zhongao assembles a professional team. Comprising seasoned engineers, skilled technicians, and dedicated managers, we ensure efficient operations, quality products, and excellent customer service.
Custom Service
This service stands as one of the exclusive hallmarks of Zhongao. We craft tailor - made solutions, precisely addressing diverse client requirements with professionalism and creativity.
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Product name |
Polishing Rod |
|
OD tolerance |
H5/H6 |
|
Surface fineness |
Ra0.2um |
|
Sizes |
Diameter: Φ3-Φ35mm, Length: 50-330mm |
|
Material |
Tungsten Raw Materials |
|
Physical performance |
High Precision, strength, hardness, wear resistance. |
|
Application |
Carbide rods are mainly used for drill bits, end-milling cutters and winches. |
|
Non-standard or Tolerance |
Can be customized. |
|
Chemical requirements |
|||||||||||
|
Grade |
N(≤) |
C(≤) |
H(≤) |
Fe(≤) |
O(≤) |
Al(≤) |
V(≤) |
Pd(≤) |
Mo(≤) |
Ni(≤) |
Ti |
|
GR1 |
0.03 |
0.08 |
0.015 |
0.2 |
0.18 |
/ |
/ |
/ |
/ |
/ |
Bal |
|
GR2 |
0.03 |
0.08 |
0.015 |
0.3 |
0.25 |
/ |
/ |
/ |
/ |
/ |
Bal |
|
GR3 |
0.05 |
0.08 |
0.015 |
0.3 |
0.35 |
/ |
/ |
/ |
/ |
/ |
Bal |
|
GR4 |
0.05 |
0.08 |
0.015 |
0.2 |
0.4 |
/ |
/ |
/ |
/ |
/ |
Bal |
|
GR5 |
0.05 |
0.08 |
0.015 |
0.4 |
0.2 |
5.5~6.75 |
3.5~4.5 |
/ |
/ |
/ |
Bal |
|
GR7 |
0.03 |
0.08 |
0.015 |
0.3 |
0.25 |
/ |
/ |
0.12~0.25 |
/ |
/ |
Bal |
|
GR9 |
0.03 |
0.08 |
0.015 |
0.25 |
0.15 |
2.5~3.5 |
2.0~3.0 |
/ |
/ |
/ |
Bal |
|
GR12 |
0.03 |
0.08 |
0.015 |
0.3 |
0.25 |
/ |
/ |
/ |
0.2~0.4 |
0.6~0.9 |
Bal |
|
GR23 |
0.05 |
0.08 |
0.012 |
0.25 |
0.13 |
5.5~6.5 |
3.5~4.5 |
Bal |
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Tensile requirements |
|||||
|
Grade |
Tensil strength(≥) |
Yeild strength(≥) |
Elongation(≥)%) |
||
|
ksi |
Mpa |
ksi |
Mpa |
||
|
GR1 |
35 |
240 |
20 |
138 |
24 |
|
GR2 |
50 |
345 |
40 |
275 |
20 |
|
GR3 |
65 |
450 |
55 |
380 |
18 |
|
GR4 |
80 |
550 |
70 |
483 |
15 |
|
GR5 |
130 |
895 |
120 |
828 |
10 |
|
GR7 |
50 |
345 |
40 |
275 |
20 |
|
GR9 |
90 |
620 |
70 |
483 |
15 |
|
GR12 |
70 |
483 |
20 |
345 |
18 |
|
GR23 |
120 |
828 |
110 |
760 |
10 |

●Corrosion resistance, wear resistance,High pressure resistant;
●Long service life;
●Excellent performance, high cost performance;
●High dimensional accuracy;
●Quality and performance stability;
●High flatness, balance stress.
Applications of Polishing Rod
Aerospace Industry:
Used in aircraft structures such as airframes, landing gear components, and engine parts due to their high strength-to-weight ratio. They are also critical in space exploration vehicles and satellites for their lightweight nature and resistance to extreme temperatures.
Medical Field:
Utilized in orthopedic implants like bone screws, plates, and hip replacements due to their biocompatibility and resistance to bodily fluids. Also essential in dental implants for their corrosion resistance and ability to integrate with bone tissue.
Automotive Sector:
Employed in high-performance racing cars and luxury vehicles to reduce weight and improve fuel efficiency. Commonly used in exhaust systems and suspension components for their resistance to corrosion and fatigue.
Marine Applications:
Used in marine structures such as boat hulls, propeller shafts, and underwater pipelines, thanks to their excellent corrosion resistance in saltwater environments.
Sports and Recreation:
Found in bicycle frames, golf club shafts, and other sporting equipment due to their lightweight yet durable nature, enhancing performance.
Industrial Equipment:
Applied in chemical processing equipment, offshore oil rigs, and power generation plants for their resistance to corrosion and high temperatures.
Electronics:
Used in consumer electronics such as smartphones and laptops for their non-magnetic properties and durability.
Architecture and Design:
Utilized in architectural structures and sculptures for their aesthetic appeal, corrosion resistance, and longevity.
●Available in all kinds of sizes for your selection; lengths less than 1000mm can be supplied.
●Sintered by vacuum sintering furnace and HIP machine, with excellent specifications and no internal holes.
●Available types: Solid rod, single-hole rod, double straight-hole rod, and double 30° helical-hole rod.
●We have unground rods in stock, and can also grind outer diameters to H5, H6, H7, h6, h5, h7, etc.
●Various hardness levels available for selection:
84.5 HRA, 89.5 HRA, 90.5 HRA, 91.5 HRA, 92.2 HRA, 92.5 HRA, 93.2 HRA, 94.0 HRA, 94.1 HRA.
For more details, please refer to our grades below.
●Grain sizes available: 0.2 μm, 0.4 μm, 0.6 μm, 0.7 μm, etc.
●Unground rods are in stock; 5-day lead time for grinding and polishing.

FAQ
We're well-known as one of the leading polishing rod manufacturers in China. Please feel free to buy high quality polishing rod in stock here from our factory. For price consultation, contact us.
SAE 1018 Carbon Steel Bright Bar, High Carbon AISI 1045 Steel Round Bar, High Strength Polished Steel Rod








