test weight manufacturers? the power of ph
Discussion
in a nutshell, I need a number of 0.5, 1.0 and 2.0ton calibrated test weights. i have been googling all morning and can only find them to hire, not purchase.
given that pistonheads knows everything, can anyone help? I could design my own and have them cast, but I'd prefer off the shelf.
given that pistonheads knows everything, can anyone help? I could design my own and have them cast, but I'd prefer off the shelf.
shirt said:
Bill said:
Have you asked where the hire firms get them from?
they won't say. one said they could supply but at 3.5k each, and I need 45 of them. lloyds british are finding a price for me, but I'd like to buy direct. 
Have you tried contacting a foundry? They should be able to certify them with a witnessing party.
Gokartmozart said:
Chinese Company, not sure what lead time it would be.
http://chinaweight.com/
http://chinaweight.com/
use these. 
Unless you want them to be anywhere near the certified weight, then don't buy anything with a tight tolerance from China.
Mazda Baiter said:
Gokartmozart said:
Chinese Company, not sure what lead time it would be.
http://chinaweight.com/
http://chinaweight.com/
use these. Unless you want them to be anywhere near the certified weight, then don't buy anything with a tight tolerance from China.
was thinking along similar lines, I just didn't want to come across as a bit racist 
WorAl said:
Mazda Baiter said:
Gokartmozart said:
Chinese Company, not sure what lead time it would be.
http://chinaweight.com/
http://chinaweight.com/
use these. Unless you want them to be anywhere near the certified weight, then don't buy anything with a tight tolerance from China.
was thinking along similar lines, I just didn't want to come across as a bit racist I delivered to a company in Birmingham the other day. They do injection moulded plastics. I got chatting with the workshop manager whilst I was waiting to be loaded. He said that a Bavarian car maker has specified them to only use moulds made in Britain. These moulds cost £35k+ each. The chinese version would cost approx £10k. He told me that the Bavarian car maker had been stung by buying equipment from china, only to find that the tolerances weren't tight enough and (despite specifying a double hard b
d type of steel) it was made from surface hardened Mild steel.They haven't got the deep technical knowledge to back up their enthusiasm.
On the plus side, the bloke said that his company had never been busier. Which is good for a British engineering company.
Mazda Baiter said:
I hope I didn't either. I can back it up with some facts if you like?
I delivered to a company in Birmingham the other day. They do injection moulded plastics. I got chatting with the workshop manager whilst I was waiting to be loaded. He said that a Bavarian car maker has specified them to only use moulds made in Britain. These moulds cost £35k+ each. The chinese version would cost approx £10k. He told me that the Bavarian car maker had been stung by buying equipment from china, only to find that the tolerances weren't tight enough and (despite specifying a double hard bd type of steel) it was made from surface hardened Mild steel.
They haven't got the deep technical knowledge to back up their enthusiasm.
On the plus side, the bloke said that his company had never been busier. Which is good for a British engineering company.
I delivered to a company in Birmingham the other day. They do injection moulded plastics. I got chatting with the workshop manager whilst I was waiting to be loaded. He said that a Bavarian car maker has specified them to only use moulds made in Britain. These moulds cost £35k+ each. The chinese version would cost approx £10k. He told me that the Bavarian car maker had been stung by buying equipment from china, only to find that the tolerances weren't tight enough and (despite specifying a double hard b
d type of steel) it was made from surface hardened Mild steel.They haven't got the deep technical knowledge to back up their enthusiasm.
On the plus side, the bloke said that his company had never been busier. Which is good for a British engineering company.
No, you didn't I was only joking, I know they are terrible, Dealt with them a lot a few years back and everything we used went back or was dumped in the sea as an artificial reef. They're not the only country at that end of the world to be piss poor either.We had some hoses from China a few years back which were rated SWP 15,000 psi, Test pressure @ 22,500 psi.
We tested them at the docks, these were 6" hoses so the test blind on the end weighed about 150-200kg. We got up to 5,000 psi and the end BLEW OFF, flew 60-70m and put a hole through both sides of a steel container.
Our dipst QA inspector was standing with his head out the test pit, then asked what happened after he heard the bang 
dosey fker, would have torn him apart.its so bad that this thread now comes up on the first page of google results for my search term!
I have the lloyds quote coming plus managed to find a foundry in kent who have a std. range. have asked for a price from the chinese for comedic purposes and because i just know someone in supplies will ask for it.
cheers all
I have the lloyds quote coming plus managed to find a foundry in kent who have a std. range. have asked for a price from the chinese for comedic purposes and because i just know someone in supplies will ask for it.
cheers all
I used to work for a weighing equipment company.
We used cges and loaded 20kg weights into them. The cages were calibrated empty and then the 20kg weights were each calibrated once a year. One full cage would weigh 500kg when full. They were stackable as well.
Could be worth trying some local weighing machine companies, the one I worked for sold weights but it is very expensive. It's probably easier to pay a local company to come in and do weight checks every quarter. We used to do many places every quarter, some were even done monthly.
If you hire in then you do not have the hassle/expense of getting the calibration checked every year.
This is where we purchased our weights from http://weights.users.btopenworld.com/
We used cges and loaded 20kg weights into them. The cages were calibrated empty and then the 20kg weights were each calibrated once a year. One full cage would weigh 500kg when full. They were stackable as well.
Could be worth trying some local weighing machine companies, the one I worked for sold weights but it is very expensive. It's probably easier to pay a local company to come in and do weight checks every quarter. We used to do many places every quarter, some were even done monthly.
If you hire in then you do not have the hassle/expense of getting the calibration checked every year.
This is where we purchased our weights from http://weights.users.btopenworld.com/
Edited by Sixpackpert on Friday 13th August 12:13
normalbloke said:
Can you not use a tare weighed IBC container( or similar then use a fluid with a known specific gravity( like water!!), and have an accurate amount of water put into it? Does it need to be a solid lump of steel?
Not a bad idea, we used to use this method as well (when weights couldn't be used). We had a calibrated flow meter to measure the water.Sixpackpert said:
You could try a weighbridge calibration firm. They use 1000kg blocks.
To be honest we've a public weighbridge, and they're generally only accurate to the nearest 20kg. We've also got bagging scales etc which is what the Op needs, shame he's not near enough to check the weights on ours. Avery Berkel calibrate our weighbridge, but we use a company based in Liverpool called Accurate weight who calibrate our scales, and I believe they sell refurbished weighing scales too.
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