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Conduit underground pipe laying methods and technical measures

Date:2014年1月20日 15:22

2. prefabrication:

galvanized steel pipe diameter of 20mm and below, with the elbow bend bars; pipe diameter of 25mm and above, using a hydraulic bender simmer; plastic pipe bending spring should be supporting the operation.

tube cutting: pipe with a hacksaw, cut the pipe, a pipe cutting wheel saws, quantity will need to cut a good pipe size card firmly placed in the jaw to be cut. The fracture should not cut flush askew, nozzle scratch file smooth, no glitches, iron pipe in addition to the net. Supporting the use of plastic pipe tube cutter operation.

Pipe Threading: Steel Tube wire using wire sets board should be selected according to the respective tube diameter Dies, threading process, the force should be uniform.

3. Determination box, box location: depending on design requirements to determine the box, box-axis position to the horizontal reference pop civil, thread alignment, mark boxes, cases the actual size of the position.

4. Secure the box, box: first stable boxes, box, and then grout, mortar requires full, smooth firmly in the correct position. Pouring Concrete Wall fixed box, iron box plus support fixed; concrete slab, with good blocking the box fixed firmly reinforced bottom, with a good line, with the civil concreting construction simultaneously.

5. The pipe connections

galvanized steel pipe must be connected with a threaded ferrule. Threading may not have the phenomenon of arbitrary deduction, file flat nozzle smooth, the hoop must use harnesses the hoop, the joint should be firmly tight, should be no more than 2 outer Ruth deduction; plastic pipe connections should be supporting the use of fittings and adhesives .

pipeline over the following lengths should be installed junction box, its location should be easy threading. Without bending 30m; there is a bend 20m; there are two bend 15m; three bend 8m.

tube into the box, connect the box: box, box opening should be neat and consistent with the diameter of the cartridge opening with a hole saw openings on the case, to ensure that no burr hole, requiring an a hole can not be open long hole. Iron boxes, boxes with non-welding, gas welding openings. Pipe into the box, box, the application nozzle nut, exposing the lock nut threaded 2-3 buckle, two or more tube into the box, the box to the same length, spacing evenly, neatly arranged; plastic tube into the box, rear box lock should be fixed.

6. Pipe dark Laying:

with the wall (masonry) piping: with civil riser walls, the tube outer protective layer is not less than 15mm, the nozzle should be sealed up to prevent cement mortar or other debris clogging the tube. When the lead up possession of the ceiling, the upper end of the tube into a 90 ° bend should simmer into the ceiling, the roof lead pipe down not too long to reach the switch box catchy subject, etc. Qi Hao wall, followed by the first cassette short tube.

concrete slab piping: first determine the location of the boxes, according to the thickness of the wall, pop crosshairs, the block and then apply a good box firmly fixed tube. When two or more boxes, to pull straight. Tube length to fit into the box, with a line about every 1m lead wire lashing firmly.

7. Pipe laying is completed, the self-qualified on the basis of, shall promptly notify the owners and representatives of the supervision inspection and acceptance, and carefully fill out the hidden works acceptance records.
  

TypeInfo: Company news

Keywords for the information:上海电线管、上海穿线管