Whether the welding seam of the water pipe flexible waterproof sleeve is standard

The inner wall of the flexible waterproof sleeves of the water pipe is smooth, the fluid resistance is small, and the rust is not rust. It is not strict with water quality and does not accumulate. The low temperature is good, the temperature range of the PE tube is wide, and it can be used normally in the environment of -20 ° C to 40 ° C. As a flexible waterproof waterproof tube of the water supply pipe, dragging on the ground will not affect the service life of flexible waterproof sleeves of the water pipe. After the pipeline is installed, the pipeline should be tested. The test method can be tested by closed water test method. The closed inspection of flexible waterproof sleeves of the water pipe should be carried out in the triangle of the bottom triangle area and before the groove is returned.

1) Equipment and pipes that are not allowed to be welded shall be isolated from the welding system.

2) Before welding the waterproof waterproof sleeves of the water pipe, the pore board, the regulatory valve, the valve, the throttle valve, the instrument of the flange connection, the flange connection should not be installed. For the above valve and instrument of the welding Losses and protective measures such as valve head and valve seat plus protective cover.

3) The order of welding shall be carried out in order in order of the supervisor, the support, and the tube tube. The welded dirt shall not enter the passing pipeline.

4) Before welding, the firm level of pipeline branches and hangers shall be tested, and reinforcement shall be reinforced if necessary.

5) The dirty solution of cleaning and emission shall not pollute the environment, and it is strictly forbidden to discharge anywhere.

6) The restricted area should be set up when sweeping.

7) After welding and resetting the water pipe flexible waterproof sleeve, other homework that affects the cleaning in the pipe may not be performed.

8) When the water pipe flexible waterproof sleeves are reset, the construction unit shall be checked together with the construction unit, and shall fill in the "pipe system blowing and cleaning records" and "concealment project (closed) records" in accordance with the prescribed format.

When designing the waterproof pipe flexible waterproof sleeve test section, when the water head is not exceeded that the water head does not exceed the inner wall of the pipe, the test water head is used as the standard test water head with 2m inner wall of the test section. When the upstream of the pipe flexible waterproof sleeve test section is designed to exceed the inner wall of the PE pipe top, the test water head is designed to design the water head plus 2m meter in the test section. When the calculated test water head is less than 10m, but when the upstream inspection is exceeded, the height of the inspection of the well in the test of the test water is prevailing, but it must not be less than 0.5m. The soaking time of the water pipe flexible waterproof sleeves should not be less than 24 hours after the water is filled with water.