hi friends :
how can i distinguish between material which is plated by another materials and material which is 100% base metal ??
for example :
carbon steel 100%
and carbon steel plated by zinc to get (galvanized steel)???
because i confuse when i want get identification procedure for given...
hi friends :
i have got ductile pipe new network system and i want flashing this system by calcium hypochlorite to kill bacteria .
how much concentration of hypochlorite i must used without effect of pipe material and for what period of time ????
any articles will be appressiate.
i am...
hi friends:
i am techanical instructor and i have got balancing machine in the workshop .
i want clarify to the students phenomena of un balncing and method to treatment it for single and two plane.
what is the differnet ways to create unblance for balance rotors??
what type of mass do u...
hi friends :
i am new in this field and i get job in the middle east .
how can calculate sun load heat gain in summer tacking in the consieration lattitud of town or country ???which temperature i must use normal temp . or effective surface temp. differnce???
really i need your help
any links...
