India
Ladder Type Cable Tray, its shape is like an ordinary ladder, having two sides and between these two sides, steps are placed. The two sides are un-perforated U channels, called RUNNERS. Runners standard length is 2.5 mtr and it is generally fabricated from 2mm or 1.6 mm M.S sheet. The center width of the runner may be 75 mm to 150mm and the height of the edge is generally kept 25 mm. The center steps, to be placed between the runner is called RUNGS. Rungs are also U shaped channels, having 30 mm center width with slots/perforation.
The height of edges of rung is kept 15 mm. The length of rungs may vary from 150 to 1000 mm. In a standard length of 2.5 mtr runner, 10 rungs(steps) are welded, at a distance of 250mm, and thus the welding of 10 rungs, cover an area of 2250 mm, 125 mm is left on both ends, so that another Ladder type Cable tray may be joined, which will further make a distance of 250 mm in two steps/rungs.
HVAC stands for heating, ventilating, and air conditioning. Today, HVAC equipment are largely in demand owing to specific need of climate control in medium to large industrial and office buildings such as skyscrapers including aquariums etc.
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