Copper Flat Bar

Copper Flat Bar is a versatile and widely used material known for its excellent conductivity, corrosion resistance, and malleability. It is commonly crafted from pure copper or copper alloys such as brass or bronze.

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Purchasing Information

Product name

Copper Flat Bar




SGS, BV, etc


Thickness: 3mm~100mm  or as your requirements

Width: 10mm~310mm  or as your requirements

Length: 2000mm~12000mm  or as your requirements


1 ton

Supply Ability

5000 tons / month

Lead Time

10-15 working days after the receipt of 30% deposit

Payment Terms

30%T/T Advance + 70% Balance

Price Terms



Standard sea-worthy package or as required

*If you do not find what you are looking for, please call us now. If you have found it, we are happy to answer any questions or concerns you may have about flat bar grades and assist you through the purchasing process.


Copper Flat Bar is a versatile and widely used material known for its excellent conductivity, corrosion resistance, and malleability. It is commonly crafted from pure copper or copper alloys such as brass or bronze.


Performance of Copper Flat Bar:


The corrosion resistance of galvanized flat steel installation copper is more than ten times that of steel, and copper plating is more than three times that of zinc plating.
The corrosion resistance of the copper-plated steel is close to that of pure copper, and the copper surface will produce oxide with strong adhesion (copper green Cu (OH) 2), which has a good protection effect on the internal materials.
The thickness of the copper-plated material of the grounding rod must be greater than 0.25mm, and the copper-plated stranded wire and copper-plated flat steel greater than 0.070mm can be used as the grounding grid to ensure that the grounding grid is free of maintenance for 40 years.
Strong current conduction capacity. At 20 ℃, the resistivity of copper is 17.24 × 10-6 (Ω mm), and the resistivity of steel is 138 × 10-6(Ω mm)。 Assuming that the conductivity of copper is taken as the reference value 1 (i.e. 100%), the conductivity of angle steel and galvanized round steel is only 8.6%, the conductivity of copper plated steel is more than 20%, and the conductivity of copper plated steel strand is 30%.
Under the action of high-frequency current such as lightning current, copper-plated steel will produce a skin effect, and its conductivity is close to that of pure copper, far higher than that of steel grounding body.
In addition, the relative permeability of copper to vacuum is 1, and that of steel is 636 times. When passing lightning current or fault current, the impedance of copper conductor is far less than that of steel grounding body, so the probability of a side strike caused by the increase of ground potential caused by impedance will be greatly reduced.


Advantages of Copper Flat Bar:


1. Excellent anti-corrosion performance

The material shows that 99.99% of the electrolytic copper molecules with a thick copper layer have an average thickness of more than 0.25mm, so they have strong corrosion resistance and a service life of more than 50 years.

2. Better conductivity
Because the surface layer of copper is composed of 99.99% electrolytic copper molecules, it has excellent conductivity, and its self resistance is far lower than that of conventional materials.

3. Wider use
The copper flat bar is applicable to soil conditions with different humidity, temperature and PH value.




Lightning protection and grounding works in petrochemical, oil storage, power plant, substation, communication base station, airport, network machine room, railway, subway and other places.

Order Process:


The order process of our Delong Metal copper flat bar products:

1. Receive Inquiry(drawing,temper,etc.)

2. Feasibility study & quotation

3. Offer is accepted by customer

4. Comfirmation on order details

5. Signing Pl

6. Receive deposit

7. Design&make the die for extrusion

8. Mold test,make samples

9. Sample approval,mass production

10. Receive balance

11. Deiivery



Q:Can you send samples?

A:Sample can be for free,freight cost collect.

Q:What product information do I need to provide?

A:Steel grade/thickness/width/quantity,these will decide the price.

Q:About product prices?

A:Prices vary from period to period due to cyclical changes in the price of raw materials.

Q:What are the certifications for your products?

A:We have ISO 9001,CE,SGS,BV and other certifications.

Q:How about the delivery time?

A:Regularly the delivery time around 10-15 days,customized one will inform the delivery time ahead.

Q:Does the product have quality inspection before loading?

A:All the products are strictly tested before packaging,also can inspect by third party inspection.

Q:How to pack the products?

A:Standard export package with waterproof film and wooden pallet.It can effectively protect products from corrosion.

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