(DN20PPR pipe), drainage (DN50UPVC pipe), compressed air (DN20 galvanized steel pipe), cable (380VAC50A) lead to the equipment, which can be buried in a ditch (economic, load-bearing need)? Can you dig deeper and deeper? (The original ground concrete 100mm, under the sand 150mm), also buried when the need for casing it? More
(GB-2002): 14.2 General Item 14.2.1 Cable laying by outdoor laying cables (GB-2002): 14.2 General items 14.2.1 Cable laying in the construction of electrical engineering Catheter, burial depth should not be less than 0.7m. Wall steel with a wall thickness equal to or less than 2 mm should not be buried in outdoor soil. 14.2.4 metal pipe inside and outside the wall should be anti-corrosion treatment; buried in the concrete pipe wall should be anti-corrosion treatment, the outer wall is not for anti-corrosion treatment.
Taobao there. The You search 3.5mm audio and video cable. The
VGA interface to wear the chiffon bandits to see the color of the color around the Platinum Ji should also have a special interface for the audio input, the appearance looks more headset interface a bit like, you can through the speaker line computer audio input TV.
Video two lines, then a 4 connected to the outside side of the line (or a ground), one then 4 video line in the middle.
