Different materials of ventilation pipes have different prices. Ventilation pipes are made of iron, galvanized on one side and galvanized on both sides, with different prices. They are all made according to the size given by Ann, and the price depends on the material. One square meter is not expensive. More than 70 packages of public information. The labor cost of ventilation pipe installation depends on the difficulty of site construction, so it is recommended to ask the manufacturer for a specific quotation. Generally speaking, we should determine the specific price according to our own needs. According to the first-class urban project, the main material price of galvanized steel plate is calculated according to 30 yuan/square, and all expenses are calculated, and the labor is 42 yuan and 230 yuan/square; Three species 198 yuan; If the material is different from the price you calculated, you can add or subtract it appropriately. The artificial flight is basically around 20 yuan. It is the most economical to find someone to process it yourself and then find someone to pack and install it.

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