Free Tap Water Copper test Card-EXPIRED
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By: Free Stuff Times
How to Fix a Small Copper Pipe Leak Using a Repair Clamp
2009-09-08 09:00:00 Rating ExcellentRead More...
Why refigerant distributor from Brass material but not copper
2009-09-07 11:54:00 The present outdoor unit and/or an indoor unit of an air conditioner equipped with a heat exchanger having a plurality of refrigerant passages, and a refrigerant distributor system for use in same. Why the refrigerant distributor make from brass but not copper? Although the distributor is fitte
Creostote Buildup on Copper Lines
2009-09-06 03:02:00 I've got alot of creosote buildup on copper lines that are inside the firebox. We use them to heat our indoor pool... It works great except this past winter we ended up with alot of buildup.. We were able to remove the top layer by heating and scraping but we can't get rid of the thick coating on t
Copper Tin Lead Plating?
2009-08-12 21:28:00 I am working on a reverse engineering project for a customer. The part is a gear bushing and has a Copper (73.841%) Tin (3.90%) Lead (21.60%) plating (the analysis says it is consistent with CU-116492). I am having difficulty finding a supplier (inside the US) who can do this type of plating. Any
Copper Manufacturing Plant
2009-08-08 16:55:00 Hi all of u...I am back with my ignorant questions..Please forgive me. I just finished my electrical engineering.I am attending an interview at a copper,brass,alloy busbar manufacturing company. I would like to know the role of an electrical engineer at a such a plant?
How to Select Copper Cables
2009-07-27 19:32:00 how to select aluminiam and coper cable for 3 phase load
Welding for copper conductors
2009-07-21 16:07:00 What is the standard for welding of Copper conductors?
Aluminium & copper busbar size
2009-07-11 12:51:00 Dear Sir, how to selection of Aluminium & copper busbar size 100A to 5000A current rating then how to the calculate the current carrying capacity in Al&Cop bus bar Can you help me
Copper Water Lines
2009-07-03 20:13:00 Electrolysis once it has done damage to the inside of a copper water line what does it look like
copper sulphate vs cupric sulphate
2009-07-02 20:01:00 Hello gang, its me again with another question posed by my tariff. The technical book written by bureaucrats. They have given me different tariff numbers for "Cupric sulphate" and "Other copper sulphates". Wikipedia doesn't help me see what (if any)difference there is. I thought copper and cupric we
Copper Cable Manufacture
2009-07-02 19:34:00 Peace upon you all in Copper wire drawing M/C we use Steam to protect copper wire from oxidation but we need replacement of steam by Nitrogen so we need know what are the advantages of Nitrogen and what is the expected problems may be appear if we used it.
Acid for Washing Stainless Steel and Copper
2009-06-23 10:56:00 Hello, we have to brazing a stainless steel-copper joint by induction. After brazing, some place on the stainless steel turn to black because of oxidation. Our company has very critical environment requirment. So who knows any kind of acid to remove the oxidation and keep the tube copper color?
No Load Loss and Full Load Copper Loss
2009-06-16 11:54:00 Hello Everybody! Could somebody tell me the standard " No Load Loss " and " Full Load Copper Loss at 75 deg C, for a 10 MVA transformer working at 132 / 11 KV ? Regards, Rooney India
Sonic Sealing of Copper Tubes Issues
2009-06-13 02:37:00 I would like some infomation on sonic sealing of copper tubing. I'm sealing tubes which have some discoloration from previous heating. I've heard opinions both ways, some say it will work, some say no. Any of you boffins who could provide some guidance would be welcomed.
Corroding Copper Water Service Connections
2009-06-09 22:22:00 I have been a practising Civil Engineer for 12 years and i came across a new situation today. I had client call and they are having copper service laterals corroding to the point of failure on a couple projects. These laterals were connected to a C-900 plastic water line. They are failing on the
Problems Soldering Copper Caps to Copper Tubing
2009-06-04 10:14:00 Hi all, we have a product that soldering a copper cap to a copper tube using Sn97-Ag3. our customer need remove this cap. Some of cap could not removing from the copper tube even heated to the copper tube melted. I could not find the rootcause? We soldering the cap by induction, the joint c
Tight Bend Radius on Copper Pipe
2009-06-02 13:35:00 I wonder if anyone can help , we are trying to find a method of bending 22mm copper pipe at a centre line radius of only 50mm is this possible and how can we achieve it. Pulling our hair out at moment as normal pipe benders dont go that samll a radius.
Copper Level Increase - Effect?
2009-05-28 09:03:00 Hi, We're performing soldering operation in our organization. As per solder bar manufacturer profile, Cu level to be 0.95% max. Our cleaning cycle will be around 2 month once. While testing the utilised[2month] material for Lead test, it was found to be an increase of 3.80
Soldering and Increased Copper Content
2009-05-28 09:03:00 Hi, We're performing soldering operation in our organization. As per solder bar manufacturer profile, Cu level to be 0.95% max. Our cleaning cycle will be around 2 month once. While testing the utilised[2month] material for Lead test, it was found to be an incr
Copper Conductor Discoloring
2009-05-26 08:13:00 we have the problem of copper discoloring but for electrical wire Step of process. 1-Drawing wire from 8mm to 1.7mm 2-multi draw of wire from 1.7 to 0.52,0.6,0.72,0.82,1.02mm depend on cable section area. 3-Continues annealing in resistance arc furnace attached with drawing M/C.
Annealed Copper
2009-05-25 15:54:00 We use annealed copper in our process. Is there any reason why we should be using it within a 24 hour period of it being annealed. We have severe discolouration in our product and the heat treatment supplier claims it is because we do not use the product soon enough after Annealing. Any fee
Copper Scrap Metal Recycling Prices in lbs per USD
2009-05-22 18:38:00 Current copper scrap prices. LTL and TL prices is USD per pound are shown below:No.1 Heavy Scrap Copper 1.69 1.84 lbs USD No.2 Scrap Copper 1.48 1.63 lbs USD Soldered Copper Pipe... more from scrapmetalprices...
Aluminium lug to Copper bus bar connection
2009-05-09 15:29:00 Dear colleagues, At site, most of the cables that we use are Aluminium, XLPE. The lugs used for termination are also Aluminium. But the switchgear (power control centre) bus bars are made of copper. I think that bimetallic strip is required at either the lug or the switchgear terminal point. Bu
lamianted copper busbars
2009-04-28 05:40:00 I am currently stacking on a busbar selection problem. I wanna to have 3500A current rating and 65KA/S for short current, and I wanna using 2 layers laminated copper busbars Cu W100mm*T10mm I have tried forluma A=300*I*[1+0.075(N-1)] W=A/T and some busbar calculation softwares to calculate,
Laminated Copper Busbars
2009-04-28 05:40:00 I am currently stacking on a busbar selection problem. I wanna to have 3500A current rating and 65KA/S for short current, and I wanna using 2 layers laminated copper busbars Cu W100mm*T10mm I have tried forluma A=300*I*[1+0.075(N-1)] W=A/T and some busbar calculation softwares to ca
iPath Copper ETN (JJC): Ready to rebound?
2009-04-02 14:00:00 "Our latest bet is on copper through the iPath DJ AIG Copper TR Sub-Index ETN (NYSE: JJC)," notes international investing expert Nicholas Vardy.In his Global Bull Market Alert he suggests, I believe copper is at the beginning stages of a full-fledged uptrend.""Copper is used in everything from electronics, piping, roofing, and cookware to musical instruments, fire extinguishers and biotech compounds. "As a result, its price movements have been a reliable leading indicator of the health of the global economy. And look behind doom and gloom headlines, and you find that demand for copper has been rising steadily. "Since bottoming in December, the price of copper has risen 28% in 2009, after plunging 54% last year."In particular, China’s imports of unwrought copper, refined metal and copper alloy for the first two months of the year surged 53.5% from a year earlier."hina’s State Reserve Bureau (SRB) has been purchasing copper...
Heat dessipation calculation of copper busbar
2009-03-28 15:37:00 Please help me to do the heat dessipation calculation of the copper bus bar in general. Actualyy i am looking for the 5000A disribution panel ( bus bar used is 200*10*3 per phase.) Rated ambient temperature is 50°C
Scrap Metal Auction for Copper Scrap and Other Metals March 17 2009
2009-03-16 14:20:00 Auction Event 7088 - National Scrap Metal auction ends March 17, 2009. Auction consists of 59 lots of various scrap metals. Some example lots are: Lot 5001 - 40,000 pounds of insulate... more from scrapmetalprices...
Current Carrying Capacity of Copper Cables
2009-03-10 07:48:00 How much AC current a 16 Sq. MM copper cable will carry? Is there any thumb to approximate CS VS. Current Carry capacity ?
Scrap Copper Prices World Summary For Feb 28 2009
2009-02-28 21:23:00 prices for copper scrap are based on current spot market prices and are shown LTL and TL pricing.US Scrap Copper 1.14 1.29 lbs USD Canadian Copper 1.43 1.61 lbs CND EU Scrap Copp... more from scrapmetalprices...
Using Copper Plating as a Lubricant to Deep Draw CRS
2009-02-26 05:25:00 We have a government drawing that specifies to use AISI 1008 copper plated steel to form a small tube. I was told that this method was used in the 1940's to lubricate the metal to help draw the part. After the part is formed we have to strip off the copper and re-copper plate the part. That seems
Auction for 100000 pounds of copper bearing scrap ends Feb 26
2009-02-25 16:41:00 LOT (100, 000LBS) APPOXIMATELY COPPER BEARING, SCRAP. THIS IS A SIX MONTH TERM CONTRACT LOCATED AT PUGET SOUND NAVAL SHIPYARD, BREMERTON, WA. THE PRICE WILL BE ADJUSTED EVERY 30 DAYS FROM THE BID A... more from scrapmetalprices...
Copper Cars: The Mercer-Cobra
2009-02-11 06:01:00 The Mercer-Cobra showcar was conceived to play a dual role. First, it would tour the world and show the general public the striking appearance of copper and brass trim on a modern automobile. Second, it could be (and was) used to focus industry attention on not only the decorative possibilities
Spot-Welding Copper
2009-02-03 22:44:00 Hi all Is it possible to spot-weld copper sheet (2.0mm/14SWG) together ?
Copper Pipes and Boiler Base Plates
2009-01-14 13:37:00 I'll preface this by saying I am not professional, however this did seem like a good place to ask my question. I have a vacation home with a small wood fired boiler which circulates water through the old style radiators with a small pump. The newest secton (Over 30 years old) is attached at the end
Aluminum Wires vs. Copper Wires
2009-01-12 11:26:00 I need to get convertion table to determine the size of winding alumunium wires in stead of copper wires.
mulit strand copper wire
2009-01-11 08:03:00 a section of multi-strand copper wire (14AWG) breaks in a brittle fashion. Can we infer anything from its past heating and/or current carrying capacity? Insulation has been burnt off over some portions.
Nickel and Copper in Hydrogenating
2009-01-07 19:33:00 I know that Nickel is used as catalysts in Hydrogenating of vegetable oil. If copper is present in the process, what will happen? On the periodic table nickel and copper are near one another.
Scrap Metal Auction For 11,200 lbs of Copper Ends Today
2008-12-16 15:23:00 Currrent scrap auctions this week include 11,2000 lbs of copper turnings and shavings for sale. The auction ends December 16. To bid on tghis auction and other scrap metal auctions, go ... more from scrapmetalprices...
Getting a good earth return using copper rods.
2008-12-08 13:01:00 I have a copper road earth electrode that shows a resistance of 200Ω on the earth loop test meter. It also reads a total of 400Ω when using an ohmmeter connected to the incoming lead water pipe. From which I deduce the water pipe is also 200Ω. When the earth electrode and all wat
Current Scrap Metal Prices - Copper
2008-12-06 23:21:00 US Scrap Copper 1.20 1.35 lbs USD Canadian Copper 1.55 1.74 lbs CND EU Scrap Copper 2087.69 2348.65 MT EUROChina Tong Scrap 18194.77 20469.12 MT RMB Asia Copper 2645.52 2976... more from scrapmetalprices...
copper coating
2008-12-06 12:16:00 Hello every one, I need to know how mild steel AISI 1008 can be cleaned , pickling before copper coated.I use sulfuric acid @ 15 % concentration , then coppering by using copper sulfate acidic solution,but the colour is not shiny. Any help is highly appreciated. Thanks and best regard
Southern Copper (PCU): Mining for value and yield
2008-12-04 06:00:00 "Weakness in commodities suggests a screaming sign of an overreaction; it's time to take another look at a high-quality, high-yielding commodity stocks such as Southern Copper (http://www.thestockadvisors.co-m/quote.htm?sym=) (NYSE: PCU (http://www.thestockadvisors.co-m/quote.htm?sym=pcu))," says global investing expert Nick Lanyi (http://www.thestockadvisors.co-m/ccount/click.php?id=2617).In- his High Yield International (http://www.thestockadvisors.co-m/ccount/click.php?id=2617), he says, "With mines in Mexico and Peru, Southern Copper ranks #1 in total copper reserves of any publicly traded company, making it almost a pure play on a rebound in the metal's price." Here's his contrarian outlook. "Southern Copper has enough reserves to continue its current rate of production for the next 80 years without a single expansion or acquisition."With copper prices falling, the firm's earnings are taking a hit -- and the dividend has recently been cut. Now that this cut has alrea...
Is machining beryllium copper hazardous?
2008-12-03 06:25:00 I have a question that is not related to manufacturing process so much as personnel health in the manufacturing environment. Many years ago I had an opportunity to machine some precision components that were designed to be made from Beryllium Copper. The parts were destined to be both lathed an
Material constant for Tinned copper
2008-11-30 07:37:00 Hi, I stucked while desiginig the Earthing of substation.Fisrt question is Tinned copper and Annealed copper are same or different.2)If it is different can you share the material constants for the same. I need 1)Thermal coefficient of resisitivity 2)Material conductivity 3)Fusi
copper busbars
2008-11-27 03:48:00 what is the acceptable/recommended value of milli volt drop test in copper bus bar jouints used in LV switchgear panel?
copper leads and commutator soldering methods
2008-11-24 07:23:00 Greeting from India !!! kindly tell me soldering methods for copper leads of armature winding and commutator also specify any machinery is available
Current and Historical Copper Metal Prices
2008-11-20 17:02:00 Current and historical copper metal prices can be obtained at www.scrapmetalpricesandauctions-.com ... more from scrapmetalprices...
Current and Historical Copper Metal Prices
2008-11-20 16:45:00 Current and historical copper metal prices can be obtained at www.scrapmetalpricesandauctions-.com ... more from scrapmetalprices... |
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