Sumer (Beijing) International Trading Co., Ltd.
| Supply Ability | 500,000 pcs/month |
| Packaging Details | carton |
| Color | Bronze |
| Material | Brass (copper alloy) |
| Origin | China |
| MOQ | 500-1000pcs |
| Shape | LAMPHOLDER |
| Usage | Tombstone |
| Length | 10cm |
| Brand Name | B&R |
| Model Number | BD008 |
| Certification | CCPIT |
| Place of Origin | China |
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Product Specification
| Supply Ability | 500,000 pcs/month | Packaging Details | carton |
| Color | Bronze | Material | Brass (copper alloy) |
| Origin | China | MOQ | 500-1000pcs |
| Shape | LAMPHOLDER | Usage | Tombstone |
| Length | 10cm | Brand Name | B&R |
| Model Number | BD008 | Certification | CCPIT |
| Place of Origin | China | ||
| High Light | Casket Cross ，Ornamental Coffins Screws | ||
Main information:
Product name:Brass decoration
Model: BD008
Brand: B&R
Application: Tombstone ,cemetery or others.
Origin: China
Manufacturer: Sumer International (Beijing) Trading Co.,Ltd
Product detail:
Size: L 10cm
Material: Brass (Copper alloy)
Color /finishing: Antique Bronze
MOQ:500-1000 pcs
Packing: Carton
Main feature:
Professionally engaged in funeral field over 10 years;
Customized products acceptable;
Good quality and competitive price;
More Information:
Characteristics---Physical
Copper, silver, and gold are in group 11 of the periodic table; these three metals have one s-orbital electron on top of a filled d-electron shell and are characterized by high ductility, and electrical and thermal conductivity. The filled d-shells in these elements contribute little to interatomic interactions, which are dominated by the s-electrons through metallic bonds. Unlike metals with incomplete d-shells, metallic bonds in copper are lacking a covalent character and are relatively weak. This observation explains the low hardness and high ductility of single crystals of copper.At the macroscopic scale, introduction of extended defects to the crystal lattice, such as grain boundaries, hinders flow of the material under applied stress, thereby increasing its hardness. For this reason, copper is usually supplied in a fine-grained polycrystalline form, which has greater strength than monocrystalline forms.
The softness of copper partly explains its high electrical conductivity (59.6×106 S/m) and high thermal conductivity, second highest (second only to silver) among pure metals at room temperature.This is because the resistivity to electron transport in metals at room temperature originates primarily from scattering of electrons on thermal vibrations of the lattice, which are relatively weak in a soft metal.The maximum permissible current density of copper in open air is approximately 3.1×106 A/m2 of cross-sectional area, above which it begins to heat excessively.
Copper is one of a few metallic elements with a natural color other than gray or silver.Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between the filled 3d and half-empty 4s atomic shells – the energy difference between these shells corresponds to orange light.
As with other metals, if copper is put in contact with another metal, galvanic corrosion will occur.
Characteristics---Chemical
Copper does not react with water, but it does slowly react with atmospheric oxygen to form a layer of brown-black copper oxide which, unlike the rust that forms on iron in moist air, protects the underlying metal from further corrosion (passivation). A green layer of verdigris (copper carbonate) can often be seen on old copper structures, such as the roofing of many older buildings.and the Statue of Liberty.Copper tarnishes when exposed to some sulfur compounds, with which it reacts to form various copper sulfides.
Copper
| Atomic number (Z) | 29 |
| Group, period | group 11, period 4 |
| Block | d-block |
| Element category | transition metal |
| Standard atomic weight (Ar) | 63.546(3) |
| Electron configuration | [Ar] 3d10 4s1 |
| Electrons per shell | 2, 8, 18, 1 |
More Picture:
BD008 brass decoration for tombstone
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Catholic cemetery
Copper mine
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2007
Total Annual:
500000-1000000
Employee Number:
50~100
Ecer Certification：
Active Member
Sumer (Beijing) International Trading Co., Ltd, is one of biggest manufacturer and exporter in funeral products in China. We are specialized in coffin handle, casket corner, swing bar, crucifix, cross, decoration and others’ funeral products. And we also supply the wooden coffin, metal casket,... Sumer (Beijing) International Trading Co., Ltd, is one of biggest manufacturer and exporter in funeral products in China. We are specialized in coffin handle, casket corner, swing bar, crucifix, cross, decoration and others’ funeral products. And we also supply the wooden coffin, metal casket,...
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