Hello,
I just got a question [sadeyes] from one of our managers concerning cadmium in plastic. What is it for? Is it in the colouring of the plastic or is it to make the plastic soft? Or something else? [hammer]
Best regards,
GM [morning]
Hello,
The area where the stainless steel is welded, is getting rusty after doing the dishwasher test... [cry][cry]
Why is this and can we avoid this?
Regards,
GM [hammer]
Hello,
I work for a trading company and we are in the process of buying a kind of grater (like a cheese grater).
The problem is that the grater is very dull. We want it sharper, but the factory says this is not possible. I know this is not true, because I've seen plenty of graters which are...
Hello,
The company I work for sold a lot of outdoor lightchains to Europe for the Christmas season. We bought them in China and when we tested them they were fine. Now in Europe a lot of them flicker. They tell me it is because of the temperature.
In Southern China (+25 degrees Celsius) it is a...
Hi all,
I am looking for a way to make the small round ducts and also the round branch ducts quicker. Currently everything is done manually and I’d like to change that. Does anyone have any information on duct manufacturing processes (both automatic, semi-automatic and manual)?
I found some...
Hi all,
Has anyone heard or read anything about a project whereby rectangular ducts are made in a production process as follows. This is taken from a webpage I found:
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Project Description
Up to now the ventilation industry has used...
Hi,
I am looking into the process of making sheet metal air ducts. Does anyone have experience and/or knowledge about a sheet metal duct production process or even something like an 'air duct maker'?
Also I am looking at plasma and laser cutters (for the sheet metal), but I worry that the heat...
Hello all,
I am currently working in the HVAC business and am trying to improve the welding of ducts. I have been looking at seam welding for this (ducts are sheetmetal (galvanized steel, stainless steel or aluminum) of thicknesses between 0.6 mm and 1.5 mm). The length of the duct (and thus...
Hi,
I am looking to find a way to improve the seems of ducts. These ducts are for example used for airconditing. Currently these seems are welded but the quality is not that great. The sheet metal of which these ducts are made are about 0.6 mm to 1.0 mm thick. The length of the seem is about 1...
Hi,
Does anyone know of 3D CAD software which can be used for HVAC design (both for designing the individual ducts as well as the layout of connected ducts in buildings.
Regards,
G. Mensing
