How much is the channel steel? How much is one and how long is it?. What is the price of different sizes?
Whether poor channel or national channel, are 6 meters. Channel twelve meters, unless you are specially made to order. With 2, and so on, so long span to do the next floor, GB are not. Unless you are about 3 meters, one support. 12 meters long span do general office loft, have to use i-beam. And more than 16#.
This is too difficult for you to answer, for example: 10# channel steel, the worst wide 10mm, width 5MM, material thickness of about 5MM, the price of about 95 yuan. The national standard is about 150 yuan.
