What are the common methods and precautions for outdoor water supply pipes?

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The outdoor water supply pipe has the characteristics of a single long pipe, such as the cast iron pipe for water supply is generally about 6m, and the steel pipe can determine the length of the pipe according to the crane scheme, which should not only avoid increasing the difficulty of the pipe or causing pipeline deformation due to the excessive length of the pipeline, but also consider minimizing the number of fixed welds.

According to the situation of the construction site, the commonly used downpipe methods include manual downpipe, mechanical downpipe and two-corner frame hanger.

Artificial lower pipe: mostly used in the installation of cast iron pipes, the two big ropes are set near the two end points, two people operate together, one end of the big rope is fixed somewhere on the ditch, can also be stepped on, the other end of the two people at the same time slowly loosened, so that the pipe rolls in the ditch, the method is also known as the rope pressure method. It is strictly forbidden to push the pipe into or pry people into the pipe ditch.

Tripod hoisting method: that is, the tripod is installed above the ditch, and the tripod is hung under the inverted chain (catty does not fall). This method is mainly used to lift and adjust the pipeline in the ditch in place.

Mechanical pipe lowering method: that is, the pipe is hoisted into the pipe trench by crane and other equipment. When the steel pipe connection is long, two cranes can be used to operate at the same time.

Mechanical downpipe can save manpower and time, and mechanical downpipe is mostly used when manual downpipe cannot be implemented. The mechanical downpipe should have sufficient space, and there should be no obstruction within the range of the swing radius of the crane boom and the lifting height (including buildings, temporary facilities, high-voltage lines, etc.).

The crane should be selected according to the weight of the lifting, the walking route, the distance from the pipe trench, and the length of the pipe section.

Matters that should be paid attention to during the construction of indoor water supply pipelines:

1) In addition to the fire hydrant and the production water supply system, the water supply pipeline is mostly connected by galvanized steel pipe thread buckles. When it is difficult to connect the galvanized pipe thread buckle with a pipe diameter greater than 80, the secondary galvanizing method can be used or the weld joint after welding can be treated with anti-rust treatment.

2) The buried part of the domestic water supply pipe can be made of cast iron pipe, when the galvanized pipe is used, it should be insulated after the pressure test, and the galvanized pipe is all hot-dip galvanized process pipe.

3) All valves located in the ceiling should be installed after the strength test, and the domestic water supply pipe in the ceiling should be insulated with fat condensation.

4) After the pipeline construction is completed, the pipeline, pool and water tank should be flushed, and the water quality should be clear and free of impurities before the official water can be used.

5) The pipe support should be firm, the pipeline should be horizontal and vertical, and the horizontal and vertical degree should meet the requirements of the specification.

Summary. It is strictly forbidden to push the pipe into or pry people into the pipe ditch.

Notes:1The test pressure value is the pressure at the lowest point at the end of the pipe. However, if the pressure at the highest point exceeds MPA, the pipeline should be tested in sections.

What safety precautions should be paid attention to in the installation of outdoor water supply pipes?

It is strictly forbidden to push the pipe into or pry people into the pipe ditch Precautions: 1The test pressure value is the pressure at the lowest point at the end of the pipeline. However, if the pressure at the highest point exceeds MPA, the pipeline should be tested in sections.

The outdoor water supply pipe has the characteristics of a single long one, such as the cast iron pipe for water supply is generally about 6m, and the steel hall pipe can determine the length of the pipe according to the crane scheme, which should not only avoid increasing the difficulty of the pipe or causing pipeline deformation due to the excessive length of the pipeline, but also should consider minimizing the number of fixed welding noisy hidden openings.

Abstract: The installation of indoor water supply pipelines should be carried out according to the following principles for cross construction avoidance.

1) When the same type of pipe, let the small pipe let the big pipe, and the branch pipe let the main pipe.

2) The pressure pipe gives the gravity pipe, and the low pressure pipe makes the high pressure pipe.

3) Cold water pipes to hot water pipes.

4) General pipes let high or low temperature pipes.

5) Wire pipes to make water pipes.

6) Water pipes to make ventilation pipes.

7) The drainage pipe is below, and the water supply pipe is above.

8) Other requirements: the installation of various pipelines, painted in the wall for concealed installation, painted outside the wall for open installation.

What are the requirements for the installation of indoor water supply pipes?

The installation of indoor water supply pipelines should be carried out in accordance with the following principles for cross construction avoidance. 1) When the same type of pipe, let the small pipe let the big pipe, and the branch pipe let the main pipe. 2) The pressure pipe gives the gravity pipe, and the low pressure pipe makes the high pressure pipe.

3) Cold water pipes to hot water pipes. 4) General pipes let high or low temperature pipes. 5) Wire pipes to make water pipes.

6) Water pipes to make ventilation pipes. 7) The drainage pipe is below, and the water supply pipe is above. (8) Other requirements:

For the installation of various pipes, the one painted inside the wall is concealed, and the one painted outside the wall is surface-mounted.

Can the floor be installed if the kitchen hot water pipe?

Does the installation of water supply and heating pipes in civil kitchens need to go to the ceiling, or can the ground also be installed?

If the sun does not shine can be surface-mounted, surface-mounted has a lot of shortcomings, generally it is not recommended to surface-mounted installation specifications?

Plumbing kitchens are generally ceilinged with ceilings.

Can I find the installation specifications?

If it is not found, does not meet the requirements and does not pass the acceptance, refer to the acceptance standards.