Can the cables in the factory be laid directly?
The problem itself is not clear, what plant? Direct laying the concept? So qualitatively reply as follows: . usually, the factory cable laying can be cable bridge, bracket, cable trench, casing buried, etc. implementation. . to power engineering, for example, please see GB-2007 "power engineering cable design specifications" fifth part.
Of course, the line is iron or pvc, poor quality. Household water pipes generally have iron, pvc, ppr, aluminum-plastic composite of these types, in addition to relatively thick, more powerful than the line tube. So the decoration of the master on the hard Oh, open slot to stay a little more.
My house just started renovation because the workers said the house of the original water pipes need to be replaced by a good water pipe so many water pipes on the abandoned, strange pity. I would like to ask you, these do not have the water pipe can be used as a line, used to track? Can be considered waste to use it Question added: is the new building did not live inside the original shop plumbing plumbing workers said to be replaced by a new tube the best so I think threw away Unfortunately, these do not know the water pipe I do not know whether it can be used as a line line? The original water pipe quality is not so good so many owners are also re-change so I also changed the new water pipes more
First, from the strength point of view there is no problem, because these pipes used in the original water supply system, the design pressure requirements of the higher strength of the pipe, and the pipe on the pipe strength requirements are much lower than the water pressure pipe, so there should be no problem. Second, from the service life is not appropriate to consider, no matter what the material of the water pipes, because they have been the degree of the second renovation, and presumably also used a lot of years, and certainly there have been varying degrees of aging, especially Steel pipe, pipe wall rust layer has been destroyed, such a pipe forcibly used, its life will be greatly reduced. Third, my proposal is not to use these abandoned pipes, is the so-called "meat are bought, and worse this coriander", the original there is no cost, and the importance of electrical systems in the family you also Know, so I think this "waste utilization" approach is not enough, is "picking seed hemp, lost watermelon", in order to save this money is not worth it, do you think? Fill: new building water pipe that naturally no problem, but since it is a new building, then why should all demolish redo? Plumbers take the opportunity to earn money big suspects, you have to understand!
