300mm Perfect Polish Finish Shiny Copper Hollow Sphere

What is your lead time?

-- Our general lead time is 10-15 days but may extend during peak periods.

Is a deposit required?

--It depends on the price of the purchase. If it is over 10,000 o, then a deposit of 50% of the total sum is required in advance, and the rest could be paid before the products are finished. 

If I re-size your designs, is there a price change? 

--In most cases, varying the design will result in minimal variations in price. Customising would mean the cost of creating a new template, changes in laser cutting time, and re-formatting our machines usually contributes to a re-size fee.

Why choose us?

Our company is a professional supplier.we have many years of export experience of all kinds of stainless steel balls and we enjoy good reputation in South America,Mid East,Africa,etc.Our products haveacquired the CE certification 

Our Advantage

Powerful Strength

Our factory is one of 24-hour service, contact us anytime you like.

Quality Assurance

 the specialist in selling stainless steel product- the Land of sculpture In China, we have a strong supply capacity to satisfy your requirements. 

Factory Outlet

Factory direct sales not noly could ensure the reasonable price, but also guarantee the quality and delivery time of the stainless steel products. 

Professional

Grand A material, exquisite craft, carvers are artists with decades of experience, guarantee the process.

Gold Medal After-sales

All risks for your orders. Once your goods was broken, we will send you a new one freely.

Excellent Reputation

Over the years , we have won the praise of many consumers relying on our superior products and services

What kind of spheres we have?(similar products)

1.carbon steel balls

2.grinding steel balls

3.hollow stainless steel balls

4.large garden decoration balls

5.brass hemisphere

6.color gazing ball

7.precision steel ball

8.mirror polish ball

9.brushed stainless steel hollow stainless

Copper is the perfect conduit for heat and electricity, though balls or spheres made of copper are not recommended to the occasions or situations where they are exposed to corrosive liquids or appliances under high stress. These balls or spheres are , however, soft and sensitive to corrosion from various materials. 

Copper balls or spheres of Foshan Dongyuan Company range from 6mm to 300mm, with 0.8mm in thickness. The most sought-for coppers fall under the category of accessories of clothings, footwear and jewelry. They are also of excellent quality and superb craftmanship. Welding is employed in the copper balls without a noticeable seam and could also be applied in many ways. And we believe they could also be employed for many fruitful uses. 

Our copper balls come with no holes but could be customer-orientated, that is to say, we could add a hole or holes to your balls as you want. Drilling with small holes is free of charge and please rest assured that everything of the copper balls will come out as perfect as possible.

Copper is a reddish coloured metal which is malleable and ductile. It has excellent thermal and electrical conductivities and good corrosion resistance. It is found in sulphide ores and as carbonate, arsenide and chloride (abundance in the Earth's crust is 50 ppm). Extraction of the metal involves roasting the ore to produce the oxide, followed by reduction and purification by electrolysis. The element is inert to non-oxidising acids but reacts with oxidising agents. In air, it will weather to produce the characteristic green patina of the carbonate. Copper will combine with oxygen on heating to produce CuO at red heat, and Cu2O at elevated temperatures.

Pure copper has an electrical conductivity second only to that of silver and hence its main application is in the electrical industry. Copper is also the basis of many important alloys (e.g. brass, bronze and aluminium bronze) and has been traditionally considered to be one of the coinage metals, along with silver and gold, but being more common, is the least valued. It is one of the first metals ever to have been worked by man and is thought to have been mined for more than 5000 years.

Copper was discovered by known since ancient times in unknown at not known. Origin of name: from the Latin word "cuprum" meaning the island of "Cyprus". 

The discovery of copper dates from prehistoric times. There are reports of copper beads dating back to 9000BC found in Iraq. Methods for refining copper from its ores were discovered around 5000BC and a 1000 or so years later it was being used in pottery in North Africa.

Part of the reason for it being used so early is simply that it is relatively easy to shape. However it is somewhat too soft for many tools and around 5000 years ago it was discovered that when copper is mixed with other metals the resulting alloys are harder than copper itself. As examples, brass is a mixture of copper and zinc while bronze is a mixture of copper and tin.

Copper is one of the elements which has an alchemical symbol, shown below (alchemy is an ancient pursuit concerned with, for instance, the transformation of other metals into gold). {{floatR}}{{/floatR}}

Sometime prior to the autumn of 1803, the Englishman John Dalton was able to explain the results of some of his studies by assuming that matter is composed of atoms and that all samples of any given compound consist of the same combination of these atoms. Dalton also noted that in series of compounds, the ratios of the masses of the second element that combine with a given weight of the first element can be reduced to small whole numbers (the law of multiple proportions). This was further evidence for atoms. Dalton's theory of atoms was published by Thomas Thomson in the 3rd edition of his System of Chemistry in 1807 and in a paper about strontium oxalates published in the Philosophical Transactions. Dalton published these ideas himself in the following year in the New System of Chemical Philosophy. 

<

ASTM B134-52 Alloy 7 brass

hemical Analysis:
Copper............................................68.5% to 78.5%
Lead.................................................0.07% maximum
Iron...................................................0.05% maximum
Zinc..................................................Balance

Mechanical Properties
Hardness as measured on parallel flat surfaces is Rockwell “B” 75 to 85.
Tensile Strength............................80,000 psi
Yield Strength................................57,000 psi
Elongation in two inches.............20%
Reduction in area.........................85%
Modulus of elasticity....................15,000,000 psi
Density...........................................0.306 lbs./cu. in.

Brass balls provide excellent resistance to corrosion by water. Brass has the ability to resist the corrosive effects of fuel oil, gasoline, butane, dry carbon dioxide, benzene, lime-sulphur mixture and similar chemical agents.

 Corrugated carton, opp bag and foam

Certificate

Wild range of selection of various sizes and materials