Qingdao Changdi Metal Surface Treatment Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 5000M/DAY |
| Delivery Time | 8-12days |
| Packaging Details | pallet OR wooden case packaging |
| Specification | 25*4mm |
| Length | Customized |
| Surface | Bright |
| Hardness | ≥ 100HB |
| Copper Adhesion | ≥Grade 1 |
| Thermal Conductivity | ≥ 50W/mK |
| Raw Material | Cold draw high quality mild flat steel |
| Package | 100m/roll |
| Brand Name | QDCD |
| Model Number | CCFS008 |
| Certification | ISO |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T | Supply Ability | 5000M/DAY |
| Delivery Time | 8-12days | Packaging Details | pallet OR wooden case packaging |
| Specification | 25*4mm | Length | Customized |
| Surface | Bright | Hardness | ≥ 100HB |
| Copper Adhesion | ≥Grade 1 | Thermal Conductivity | ≥ 50W/mK |
| Raw Material | Cold draw high quality mild flat steel | Package | 100m/roll |
| Brand Name | QDCD | Model Number | CCFS008 |
| Certification | ISO | Place of Origin | CHINA |
| High Light | copper coated flat bars for grounding ，copper clad steel grounding bars ，flat copper bars for electrical safety | ||
1. High Mechanical Strength with Excellent Conductivity
Copper-bonded (and copper-clad) steel flat bars combine the tensile strength of steel with the high electrical conductivity of copper.
This bimetallic structure ensures robust mechanical performance alongside reliable current flow—ideal for grounding, earthing, and structural electrical applications.
2. Enhanced Corrosion Resistance
The outer layer of copper offers superb corrosion resistance, protecting the steel core from environmental degradation.
This makes copper-bonded steel especially suitable for long-term use in outdoor and underground grounding systems.
3. Superior Durability and Long Service Life
Manufactured via cold rolling, hot drawing, or metallurgical bonding, these flat bars ensure a strong copper-steel interface that resists peeling, cracking, or delamination.
Typical copper layer thickness is ≥ 0.3 mm, and tensile strength ≥ 600 N/mm², giving a service life of 30–50 years or more.
Company Details
Year Established:
2019
Total Annual:
10000000-16000000
Employee Number:
70~120
Ecer Certification：
Verified Supplier
We are a high-tech enterprise specializing in manufacturing copper bonded steel earthing materials located in Qingdao, China. Since 2018. Participate France Exhibition We are a high-tech enterprise specializing in manufacturing copper bonded steel earthing materials located in Qingdao, China. Since 2018. Participate France Exhibition
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