Of all the commonly available casting metals, the alloys ~f copw per offer the best general corrosion resistance. This unique and important characteristic is onc of the chief reasons why these aUoys are used so extensively in industry_
Virtually al1 aUoys of copper bave good resistance to corrosion. When this characteristic is combined with such other valuable properties as strength, electrical conductivity and machinability, the engineer and designer have a highly useful group of marerials with which to work.
Pure copper is highly resistant to the atmosphere; to natural hot, fresh and salt water; and to all alkaline solutions except those distinctly anunoniacal. In general, the copper alloys retain these inherent resistances.
For exposure to weather, the entire group of alloys behaves excellently. For underground water or gas service all of the tin bronzes, leaded tin bronzes and silicon bronzes are acceptable. In ma~y instances, they are the only alloys specified for water or gas systems, since tin bronze and silicon bronze valves and fit. tings retain good operating characteristics indefinitely in service. Tin bronze has long been a standard alloy for use in sea water. The United States Navy specifies these alloys for equipment such as heat exchangers, condensers, and marine bardware for which sea water corrosion is an important consideration. Manganese or aluminum bronze is used extensively for propeller wheels of an sizes from those for small outboard engines to large wheels weighing over 75,000 pounds.
Copper alloys offer resistance to many chemicals, acid, alkaline or organic. They are widely used in equipment for industrial and chemical plants involving exposure to many types of COrTOsive agents.
Numerous tabulations are avajIable to indicate the materials with which the various groups of copper alloys can be successfully used. However, since corrosion of any metal depends on a variety of conditions, including concentration of the liquid, temperature., agitation, etc., it is difficult and unsafe to generalize.
Sunday, June 01, 2008
COLOR OF BRASS
For thousands of years, brass and bronze alloys have been used because of their pleasing colors. The rich warmth of polished brass is familiar to all.
By varying the composition of copper alloys. distinct color changes are possible; established and precise alloying techniques enable modern non-ferrous metal producers to provide ingot of almost any specified metallic color for a wide variety of applications from plumbing fixtures to statuary.
Among the groups of common alloys, the copper~zinc brasses have the well-known golden color, although by varying the zinc content, color gradations from pinks to deep yellow can be produced.
The copper-tin alloys have the true bronze color, as do most
of the I~aded tin bronze alloys. Silicon bronze has a yellow cast when polished. Manganese bronze is normally golden yellow.
Nickel silvers, sometimes called "White Brasses", contain DO silver but are alloys of copper, lead. tin, nickel and zinc. They range from pale yellow to white as the zinc or niekel content is increased. For decorative purposes, the white alloy using 18 to 20 percent nickel is most popular.
By varying the composition of copper alloys. distinct color changes are possible; established and precise alloying techniques enable modern non-ferrous metal producers to provide ingot of almost any specified metallic color for a wide variety of applications from plumbing fixtures to statuary.
Among the groups of common alloys, the copper~zinc brasses have the well-known golden color, although by varying the zinc content, color gradations from pinks to deep yellow can be produced.
The copper-tin alloys have the true bronze color, as do most
of the I~aded tin bronze alloys. Silicon bronze has a yellow cast when polished. Manganese bronze is normally golden yellow.
Nickel silvers, sometimes called "White Brasses", contain DO silver but are alloys of copper, lead. tin, nickel and zinc. They range from pale yellow to white as the zinc or niekel content is increased. For decorative purposes, the white alloy using 18 to 20 percent nickel is most popular.
BEARING PROPERTIES
Brass and Bronze casting alloys are the standard materials for many bearing applications. Properly specified and designed, copper alloy bearings are resistant to deformation, are long~ wearing. and in some cases are able to operate for long periods without lubrication. The copper alloy bearing materia1s are easy to machine within the close toJerances required of modern precision bearing design.
The leaded bronzes are traditional for bearings. They offer the vaJuable combination of soft lead embedded in a harder copper-tin matrix. The lead in these aUoys improves seating qualities, acts as a temporary self-lubricant in case of lubrication failure, and has the quality of embeddability which may save an expensive shaft from scoring because of the presence of abrasive materials.
There are leaded bronze alloys operating successfully in almost every type of bearing application. As examples: 83-7-7-3
Federated MetaUurgical Engineers wilL be pletMed to help you choose the correct copper alloy for your bearing application.
Other important bronze bearing alloys are the copper-tin alloys containing tin in quantities of from 6 to 20 percent. These alloys aro characterized by their unusually high compression strength but should be used only where the design provides for adequate lubrication.
A third important class of brOnze beariDg materials is the. aluminum bronze; which ate able to withstand exceptionally high loads and high speeds and which perform well in difficult sliding operations. Aluminum- bronze bearings must be adequately and consistently lubricated.
The leaded bronzes are traditional for bearings. They offer the vaJuable combination of soft lead embedded in a harder copper-tin matrix. The lead in these aUoys improves seating qualities, acts as a temporary self-lubricant in case of lubrication failure, and has the quality of embeddability which may save an expensive shaft from scoring because of the presence of abrasive materials.
There are leaded bronze alloys operating successfully in almost every type of bearing application. As examples: 83-7-7-3
Federated MetaUurgical Engineers wilL be pletMed to help you choose the correct copper alloy for your bearing application.
Other important bronze bearing alloys are the copper-tin alloys containing tin in quantities of from 6 to 20 percent. These alloys aro characterized by their unusually high compression strength but should be used only where the design provides for adequate lubrication.
A third important class of brOnze beariDg materials is the. aluminum bronze; which ate able to withstand exceptionally high loads and high speeds and which perform well in difficult sliding operations. Aluminum- bronze bearings must be adequately and consistently lubricated.
BRASS AND BRONZE CASTING ALLOYS
Millions of pounds of copper alloy castings are used by industry every month. These readUy available metals provide. unusual combinations of physical and chemical properties which cannot readily be obtained from other types of castings . . . strength greater than that of many iron and steel casting alloys; outstanding ease of machining; a complete range of decorative colors from white to deep bronze; resistance to corrosion by atmosphere and by most alkaline, saline and acid solutions; a wide range of electrical and thermal conductivity. In addition, most copper alloys cast well in the foundry and castings can be obtained from thousands of reliable foundries all over America.
Saturday, May 17, 2008
Brass fittings
Brass is composed of copper and zinc alloy. If it is only the copper, zinc composition of the brass called on ordinary brass. If it is from the above two kinds of elements called on the various special brass alloy. If the lead, tin, manganese, nickel, lead, iron, copper alloy composed of silicon. Brass has strong wear resistance. Special Brass special brass called it high strength, hardness, corrosion-resistant chemical. Also cutting the mechanical properties are more prominent. From the brass pull into a seamless brass, soft, strong wear resistance. Brass seamless tube heat exchanger and condenser can be used for low temperature piping, the Cross-Harbour transport tube. Manufacturing sheet metal, beams, rods, tubing, such as casting parts. Copper in 62% ~ 68%, plastic-to create pressure equipment.
According brass alloy elements contained in the different types, brass brass is divided into ordinary and special brass two. Pressure processing brass called deformation brass.
1. Ordinary brass
(1) General Organization ordinary brass at room temperature Cu-Zn binary alloy is brass, zinc variation range, so the room temperature organizations were very different. According Cu-Zn binary state diagram (Figure 6), the brass at room temperature three organizations: 35% zinc volume in the following brass, at room temperature microstructure from single-phase solid solution composed of α, α called brass; zinc in the 36% to 46% within the scope of brass, at room temperature by the microstructure (α + β) two-phase component, known as the (α + β) brass (two-phase Brass) ; zinc content in excess of 46 per cent to 50 per cent of the brass, at room temperature microstructure only by β phase, known as β brass. brass fitting
(2) pressure-α processing performance of brass (from the H96 and H65) has a good plasticity, can withstand the cold processing, but α brass in the single-phase heat processing, forging and other vulnerable emerging temperature brittle, with the specific temperature range volume containing Zn vary, generally between 200 to 700 ℃. Therefore, thermal processing temperature should be higher than 700 ℃. Single-phase α Brass temperature brittle zone is the main reason in the Cu-Zn alloy α phase of the region there is a Cu3Zn and orderly Cu9Zn two compounds, in the low-temperature heating in an orderly change to Alloy addition, Alloy in the amount of lead, bismuth and copper forming harmful impurities low melting point eutectic films distributed in the grain boundary, the thermal processing of a rupture between the crystal. Practice shows that, by adding small amount of cerium can be effectively eliminated in the temperature brittle.
Brass two-phase (from the H63 and H59), in addition to Alloy Plastic good α phase, but also emerged from the electronic CuZn-based compounds β-solid solution. Β-phase high temperature with high plasticity, and temperature of β 'phase (orderly solid solution) hard and brittle nature. Therefore, (α + β) brass should be carried out in the hot forging.brass ball valve
Zinc is greater than 46% to 50% of the β brass because of hard and brittle, not pressure processing.
(3) the mechanical properties of zinc brass because of different mechanical properties are different, Figure 7 is a brass mechanical properties of the zinc vary the curve. For α brass, with the increased volume of zinc, σ b and δ are rising. For (α + β) brass, zinc when volume increased to about 45%, at room temperature strength continues to increase. If further increase the volume of zinc, as Alloy has emerged in the greater fragility of the r (Cu5Zn8 compounds, as the solid solution), the drastic reduction in strength. (Α + β) at room temperature plastic brass were always with the increase in zinc and lower. So zinc in excess of 45% of the copper-zinc alloy no practical value.
2. Special brass fitting
In order to improve the corrosion resistance of brass fitting, strength, hardness and cutting, etc., in the copper - add a small amount of zinc alloy (usually 1% to 2%, the minority of 3% to 4%, and certain individuals of 5% to 6 %) tin, aluminum, manganese, iron, silicon, nickel, lead, elements of a ternary, four or even five yuan alloy, which is complicated brass, also known as special brass.
(1) Zn equivalent coefficient brass complex organizations, according to add elements of brass "zinc equivalent coefficient" to projections. Because in a small number of copper-zinc alloy joined other alloying elements, usually only the Cu-Zn state diagram in the α / (α + β) phase left or right movement. Therefore, the special brass, brass usually equivalent to the general increase or decrease in the zinc content of the organization. For example, in the Cu-Zn alloy by adding 1% after the silicon, which is equivalent to the Cu-Zn alloy 10 per cent increase in zinc alloy. So Silicon "zinc equivalent" to 10. Silicon "zinc equivalent coefficient of the" largest, Cu-Zn in the α / (α + β) phase boundary significant shift copper side, that is strongly reduced α phase. Nickel "zinc equivalent coefficient" is negative, that is, expansion of α-phase region.
(2) special brass in the performance of special brass α-and β-phase solid solution is diverse complex, the effect of strengthening its larger, and ordinary brass in the α and β phase is the simple solution of Cu-Zn, strengthening effect lower. Although zinc is equivalent multi-solid solution with the simple solution of the dual nature is not the same. Therefore, a small number of multi-alloy enhanced performance is to raise a way. brass fitting
(3) Several special deformation brass pressure on the organization and processing properties
Lead Brass: Brass do not dissolve in the actual lead, the state was free distribution of particles on the grain boundaries. Lead Brass α and their organizations (α + β) two. Α leaded brass because of the harmful effects of lead greater low temperature plastic, it can only cold deformation or hot extrusion. (Α + β) Lead Brass has good high temperature plastic, can be forged.
Tin brass: adding tin brass, and can significantly increase the heat-resistant alloys, especially to raise the capacity of seawater corrosion resistance, the tin brass "Navy brass," said.
Tin can into copper-based solid solution, from the solid solution strengthening effect. But with the increase of tin alloy appears in the brittleness of the r (CuZnSn compounds), to the detriment of alloy plastic deformation, the tin containing tin brass of the general 0.5% to 1.5% range.
Commonly used tin brass have HSn70-1, HSn62-1, HSn60-1. The former is α alloy, high plasticity, can be cold and hot pressure processing. After the two brands of alloy with (α + β), the two organizations, and often appeared with a small r, not high temperature plastic, the only state in the thermal deformation.
Brass Manganese: Manganese in solid brass in the greater solubility. Brass by adding 1% to 4% of the manganese, can significantly increase the strength and corrosion resistance of the alloy, without reducing its plasticity.
Manganese brass with (α + β), a commonly used HMn58-2, cold, hot under the pressure of processing performance is quite good.
Rail Brass: Brass Rail, Rail to iron-rich phases of particulate precipitation, as a nucleus and the grain refinement, and can stop recrystallization grain growth, thereby enhancing the mechanical properties of alloy technology and performance. Brass Rail in the iron content is usually at 1.5% below their organizations (α + β), a high strength and toughness, good high temperature plastic, may also cold deformation. Popular brands for Hfe59-1 - 1.
Nickel Brass: nickel and copper to form continuous solid solution, a significant expansion α phase. Brass adding nickel brass can be significantly enhanced in the atmosphere and seawater corrosion resistance. Brass Nickel also enhance the re-crystallization temperature, and to develop more small grains.
HNi65 nickel brass-5 with single phase α organizations, has good room temperature plastic, but also in the thermal deformation, but the lead content of impurities must be strictly controlled, and whether the system will be a serious deterioration alloy thermal processing performance.
China first began using brass Zhu Jian Ming Jiajingnianjian. "Brass" first appeared with respect to the Western Han Dongfang Shuo ((() Shen vary by Arakawa in the ":" Palace northwest, the brass wall, and that of the imperial palace to. "This" brass "refers to the copper alloy, Daikao." Xintangshu-food goods "are 'bronze," "Brass" description refers to the respective colors and smelting ore products, is not now the copper-tin alloy and copper Zinc alloy. consultative Hung Song Kui essays "Daye Fu," another "for its brass also, there is not a pit, hilly Public Park," referring to the refining fire of the copper. term Brass refers specifically copper-zinc alloy, began in the Ming Dynasty, and its records found "that will be Code": "Jiajing in the cases, Tongbao money 6000000, and that the sharing of the burden of two fire brass 47,272……. "Based on the analysis of the Ming Dynasty coins ingredients found" that will be Code, "said Zhu Jian real sense of the kind of brass than the emergence of several other copper alloy night many, it is because the brass was in the metal zinc comparison difficulties. zinc oxide in a 1000 ℃ 950 ℃ temperature can be quickly be restored as zinc, and in liquid zinc at 906 ℃ already boiling, so the reduction of zinc metal steam-existence. cooling in response to downturn Steam zinc furnace oxidation to carbon dioxide into zinc oxide, zinc metal to be the condensation must have a special device, which is the use of zinc metal than copper, lead, tin, iron use much later the reason for brass Coining one of the reasons why there late, but in Jiangzhai Yangshao culture sites have been unearthed in a zinc in excess of 20 per cent of the brass-and yellow brass, plastic County, Shandong Sanlihe Longshan Culture in the strata have unearthed two kind of brass cone. Clearly, the emergence of these artifacts brass is not to say that people in the hands of the brass prehistoric smelting technology, but people in the use of Cu-Zn mine at the symbiotic inadvertently obtained. Shang and Zhou dynasties Bronze the volume of zinc are low, usually in the 10 - z order of magnitude. Han dynasty, Xinmang money in the plate of individual Cu-Zn Gan money, and some of the content of zinc in the coin of 7 per cent, but this could not explain the brass and Zhu Jian arising from the Western Han Dynasty Xinmang time because these copper-zinc alloy is very isolated phenomenon, zinc and generally more of the true meaning of brass zinc 15% to 40% of a much smaller, so we think that these zinc is the coins in the Han Dynasty, "Hill Zhuqian that" the use of copper-zinc ore at the symbiotic. According to a survey of the mine found Shandong Changwei, Yantai, Linyi and Hubei, and other places have rich resources of copper Symbiosis zinc mine, which makes the smelting of copper containing a small portion of zinc. to the Tang Dynasty, Zhu Jian materials standardization, Suozhu trip to the coin of the content of zinc are constant.
According brass alloy elements contained in the different types, brass brass is divided into ordinary and special brass two. Pressure processing brass called deformation brass.
1. Ordinary brass
(1) General Organization ordinary brass at room temperature Cu-Zn binary alloy is brass, zinc variation range, so the room temperature organizations were very different. According Cu-Zn binary state diagram (Figure 6), the brass at room temperature three organizations: 35% zinc volume in the following brass, at room temperature microstructure from single-phase solid solution composed of α, α called brass; zinc in the 36% to 46% within the scope of brass, at room temperature by the microstructure (α + β) two-phase component, known as the (α + β) brass (two-phase Brass) ; zinc content in excess of 46 per cent to 50 per cent of the brass, at room temperature microstructure only by β phase, known as β brass. brass fitting
(2) pressure-α processing performance of brass (from the H96 and H65) has a good plasticity, can withstand the cold processing, but α brass in the single-phase heat processing, forging and other vulnerable emerging temperature brittle, with the specific temperature range volume containing Zn vary, generally between 200 to 700 ℃. Therefore, thermal processing temperature should be higher than 700 ℃. Single-phase α Brass temperature brittle zone is the main reason in the Cu-Zn alloy α phase of the region there is a Cu3Zn and orderly Cu9Zn two compounds, in the low-temperature heating in an orderly change to Alloy addition, Alloy in the amount of lead, bismuth and copper forming harmful impurities low melting point eutectic films distributed in the grain boundary, the thermal processing of a rupture between the crystal. Practice shows that, by adding small amount of cerium can be effectively eliminated in the temperature brittle.
Brass two-phase (from the H63 and H59), in addition to Alloy Plastic good α phase, but also emerged from the electronic CuZn-based compounds β-solid solution. Β-phase high temperature with high plasticity, and temperature of β 'phase (orderly solid solution) hard and brittle nature. Therefore, (α + β) brass should be carried out in the hot forging.brass ball valve
Zinc is greater than 46% to 50% of the β brass because of hard and brittle, not pressure processing.
(3) the mechanical properties of zinc brass because of different mechanical properties are different, Figure 7 is a brass mechanical properties of the zinc vary the curve. For α brass, with the increased volume of zinc, σ b and δ are rising. For (α + β) brass, zinc when volume increased to about 45%, at room temperature strength continues to increase. If further increase the volume of zinc, as Alloy has emerged in the greater fragility of the r (Cu5Zn8 compounds, as the solid solution), the drastic reduction in strength. (Α + β) at room temperature plastic brass were always with the increase in zinc and lower. So zinc in excess of 45% of the copper-zinc alloy no practical value.
2. Special brass fitting
In order to improve the corrosion resistance of brass fitting, strength, hardness and cutting, etc., in the copper - add a small amount of zinc alloy (usually 1% to 2%, the minority of 3% to 4%, and certain individuals of 5% to 6 %) tin, aluminum, manganese, iron, silicon, nickel, lead, elements of a ternary, four or even five yuan alloy, which is complicated brass, also known as special brass.
(1) Zn equivalent coefficient brass complex organizations, according to add elements of brass "zinc equivalent coefficient" to projections. Because in a small number of copper-zinc alloy joined other alloying elements, usually only the Cu-Zn state diagram in the α / (α + β) phase left or right movement. Therefore, the special brass, brass usually equivalent to the general increase or decrease in the zinc content of the organization. For example, in the Cu-Zn alloy by adding 1% after the silicon, which is equivalent to the Cu-Zn alloy 10 per cent increase in zinc alloy. So Silicon "zinc equivalent" to 10. Silicon "zinc equivalent coefficient of the" largest, Cu-Zn in the α / (α + β) phase boundary significant shift copper side, that is strongly reduced α phase. Nickel "zinc equivalent coefficient" is negative, that is, expansion of α-phase region.
(2) special brass in the performance of special brass α-and β-phase solid solution is diverse complex, the effect of strengthening its larger, and ordinary brass in the α and β phase is the simple solution of Cu-Zn, strengthening effect lower. Although zinc is equivalent multi-solid solution with the simple solution of the dual nature is not the same. Therefore, a small number of multi-alloy enhanced performance is to raise a way. brass fitting
(3) Several special deformation brass pressure on the organization and processing properties
Lead Brass: Brass do not dissolve in the actual lead, the state was free distribution of particles on the grain boundaries. Lead Brass α and their organizations (α + β) two. Α leaded brass because of the harmful effects of lead greater low temperature plastic, it can only cold deformation or hot extrusion. (Α + β) Lead Brass has good high temperature plastic, can be forged.
Tin brass: adding tin brass, and can significantly increase the heat-resistant alloys, especially to raise the capacity of seawater corrosion resistance, the tin brass "Navy brass," said.
Tin can into copper-based solid solution, from the solid solution strengthening effect. But with the increase of tin alloy appears in the brittleness of the r (CuZnSn compounds), to the detriment of alloy plastic deformation, the tin containing tin brass of the general 0.5% to 1.5% range.
Commonly used tin brass have HSn70-1, HSn62-1, HSn60-1. The former is α alloy, high plasticity, can be cold and hot pressure processing. After the two brands of alloy with (α + β), the two organizations, and often appeared with a small r, not high temperature plastic, the only state in the thermal deformation.
Brass Manganese: Manganese in solid brass in the greater solubility. Brass by adding 1% to 4% of the manganese, can significantly increase the strength and corrosion resistance of the alloy, without reducing its plasticity.
Manganese brass with (α + β), a commonly used HMn58-2, cold, hot under the pressure of processing performance is quite good.
Rail Brass: Brass Rail, Rail to iron-rich phases of particulate precipitation, as a nucleus and the grain refinement, and can stop recrystallization grain growth, thereby enhancing the mechanical properties of alloy technology and performance. Brass Rail in the iron content is usually at 1.5% below their organizations (α + β), a high strength and toughness, good high temperature plastic, may also cold deformation. Popular brands for Hfe59-1 - 1.
Nickel Brass: nickel and copper to form continuous solid solution, a significant expansion α phase. Brass adding nickel brass can be significantly enhanced in the atmosphere and seawater corrosion resistance. Brass Nickel also enhance the re-crystallization temperature, and to develop more small grains.
HNi65 nickel brass-5 with single phase α organizations, has good room temperature plastic, but also in the thermal deformation, but the lead content of impurities must be strictly controlled, and whether the system will be a serious deterioration alloy thermal processing performance.
China first began using brass Zhu Jian Ming Jiajingnianjian. "Brass" first appeared with respect to the Western Han Dongfang Shuo ((() Shen vary by Arakawa in the ":" Palace northwest, the brass wall, and that of the imperial palace to. "This" brass "refers to the copper alloy, Daikao." Xintangshu-food goods "are 'bronze," "Brass" description refers to the respective colors and smelting ore products, is not now the copper-tin alloy and copper Zinc alloy. consultative Hung Song Kui essays "Daye Fu," another "for its brass also, there is not a pit, hilly Public Park," referring to the refining fire of the copper. term Brass refers specifically copper-zinc alloy, began in the Ming Dynasty, and its records found "that will be Code": "Jiajing in the cases, Tongbao money 6000000, and that the sharing of the burden of two fire brass 47,272……. "Based on the analysis of the Ming Dynasty coins ingredients found" that will be Code, "said Zhu Jian real sense of the kind of brass than the emergence of several other copper alloy night many, it is because the brass was in the metal zinc comparison difficulties. zinc oxide in a 1000 ℃ 950 ℃ temperature can be quickly be restored as zinc, and in liquid zinc at 906 ℃ already boiling, so the reduction of zinc metal steam-existence. cooling in response to downturn Steam zinc furnace oxidation to carbon dioxide into zinc oxide, zinc metal to be the condensation must have a special device, which is the use of zinc metal than copper, lead, tin, iron use much later the reason for brass Coining one of the reasons why there late, but in Jiangzhai Yangshao culture sites have been unearthed in a zinc in excess of 20 per cent of the brass-and yellow brass, plastic County, Shandong Sanlihe Longshan Culture in the strata have unearthed two kind of brass cone. Clearly, the emergence of these artifacts brass is not to say that people in the hands of the brass prehistoric smelting technology, but people in the use of Cu-Zn mine at the symbiotic inadvertently obtained. Shang and Zhou dynasties Bronze the volume of zinc are low, usually in the 10 - z order of magnitude. Han dynasty, Xinmang money in the plate of individual Cu-Zn Gan money, and some of the content of zinc in the coin of 7 per cent, but this could not explain the brass and Zhu Jian arising from the Western Han Dynasty Xinmang time because these copper-zinc alloy is very isolated phenomenon, zinc and generally more of the true meaning of brass zinc 15% to 40% of a much smaller, so we think that these zinc is the coins in the Han Dynasty, "Hill Zhuqian that" the use of copper-zinc ore at the symbiotic. According to a survey of the mine found Shandong Changwei, Yantai, Linyi and Hubei, and other places have rich resources of copper Symbiosis zinc mine, which makes the smelting of copper containing a small portion of zinc. to the Tang Dynasty, Zhu Jian materials standardization, Suozhu trip to the coin of the content of zinc are constant.
Brass Neutral Links
One of the main industry sourceable item in electrical industry is brass neutral links. It is also called as brass terminals or inserts etc., Neutral link has rod or bar size in rectangular or square. It has wire holes at one end and other end threads for screws to tight copper wire. It has ranges from 3 holes to 144 holes or upto 1 metre of length.
Friday, May 16, 2008
Brass Components
Manufacturer and exporter of brass Electrical electronics ComponentsBrass Sanitary Plumbing hose pipe tube nipples union couplers FittingsBrass hex wind cap milled flare lock Nut split Bolt ScrewBrass Cable GlandsElectrical Wiring AccessoriesBrass battery Terminal ConnectorsBrass Anchors FastenersBrass Copper Alloy Ingots Rods BilletsPhenumatic precision turned PartsNon-ferrous metal brass copper zinc cable scraps Manufacturer Exporter of Components jamnagar india Brass hinges tower bolts Building Hardwarecable lugs inserts clamps socket switchgear plug pins earthing neutrallinks hrc fusebrass compression moulding lamp holder conduit fittingsDIN standard male female adaptors automobile energy meter components reducer coupler.
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