What is the open pipe laying, line pipe concealed laying requirements

Where in the main civil structure buried (or semi-buried) laying method is called buried laying, on the contrary, not buried in the main civil structure, but the way of using open installation is called open pipe laying.

It is laid on the surface.

Where Bi Song in the main civil structure buried (or semi-buried) laying sail method is called buried laying, on the contrary, not buried in the main civil structure next to the hand, but the way of using the open installation is called open pipe laying.

Generally, the KBG pipe is clearly matched, BAI is the first, the connection is reliable, and the special connector is used, and the ZHI connector must be unscrewed if the wire is broken.

Back to the second, laying length, straight line length answer greater than 30 meters should be added over the wire box, there is a right-angle bend greater than 20 meters should be added over the wire box, there are two right-angle bends greater than 15 meters should be added over the wire box, there are three right-angle bends greater than 10 meters should be added over the wire box. . .

Third, the wall fixed or hanging bar fixed is generally not more than 2 meters fixed once, the turn is fixed once within 1 meter, and the wall is fixed with special cards (such as saddle cards, ingots cards, etc.).

Fourth, do the cross-grounding, the pipe and the pipe connection, the pipe and the box connection, the pipe and the bridge connection, with or BV4 to do a spring connection between the pipe and the pipe or the bridge or the two ends of the box connection.

Fifth, the pipe wall is brushed with anti-rust paint and fireproof coating.

If it is a metal hose or a Plicar tube, its length is also required, and the specification requires that the lighting system should not exceed the meter, and the power system should not exceed the meter.

The most important thing is that the beauty should be horizontal and vertical, and the bend is reasonable 90 degrees! This is the most important thing, if it is SC pipe need to be painted with anti-rust paint, and fire-retardant coating. If it is explosion-proof, it is necessary to install RC pipe and wire docking with the junction box, and it is required to be sealed.

What are you doing here? The pvc sc jdg of the surface has different requirements, the easiest is to look.

Construction of building electrical engineering.

The tooling depends on the construction environment, generally the pipe below 50 uses JDG pipe KBG pipe, and the SC welded pipe is used above 50.

Galvanized threading pipe for pre-embedding: SC pipe PVC pipe multi-point.

Galvanized threading pipe for surface application: JDG KBG pipe.

Pipeline laying: 1) Piping requirements:

A Semi-rigid plastic pipes can be connected by casing bonding and special ends. The length of the sleeve should not be less than three times the diameter of the tube, and the interface should be firmly bonded with adhesive;

b When laying pipelines, bending should be minimized. When the length of the straight section of the line exceeds 15 meters, or there are 3 right-angle bends and the length exceeds 8 meters, a junction box should be installed in the middle;

c Dark laying should be in the construction of civil structures, the pipeline should be buried in the wall and floor, the local groove laying pipe should be fixed and protected with high-grade cement mortar, the protective layer shall not be less than 15;

d The minimum bending radius of the pipe, and the bending flatness of the pipe should meet the requirements of the quality assessment standard. 2) Brick wall laying pipe:

a Pipeline connection. It can be sleeve bonded or terminated. The joints should be fixed firmly. The pipeline should be built in the wall along with the bricklaying process.

b Pipe into the box, box connection: can be bonded or end connection. The tube enters the box, the box is not allowed to enter and go out, and it should be flush with the inside of the box, one tube and one hole, and no long holes are allowed;