What Should Be Paid Attention To When Directly Burying 3LPE Coated Pipes?

1. It is necessary to truly understand that the direct buried laying method of the heating pipeline is divided into two ways of making up for direct burial laying and uncompensated direct burial laying. In the design and construction, it is true that the two working methods, characteristics and application places of the two methods are in order to be reasonably selected in design, and the construction is safe, reliable and economical.

2. Carry out inspections carefully after entering the site. Before the construction, it is necessary to conduct research on the manufacturers of prefabricated direct buried thermal insulation seamless steel pipes. Refuse to use the unqualified insulation pipe.

3. In the construction of polyurethane direct buried thermal insulation 3LPE Coated Pipes, welding is a key work to ensure the quality of the project, and must be paid enough attention.

4. The construction quality of various well chambers directly affects the quality of the project and the service life of the pipeline, and the fixed bracket. If the well is not well waterproofed, the parts will be damaged by water immersion. Therefore, construction should be carried out carefully to ensure the quality of construction.

5. Under the pressure conditions, it is necessary to pay attention to the pressure of the direct buried thermal insulation DIN17175 Seamless Steel Pipe. First, the water is drained and drained, and then it is done in two steps: no leakage within 10 minutes of voltage regulation. Strength test: After the pressure in the pipeline is raised to 1.5 times of the working pressure; the weld is individually punched around the weld with a 1kg hammer; the tightness test: when the pressure in the pipe is reduced to the working pressure, no time is 30 minutes. Leakage and pressure drop not exceeding 0.2 atmospheres is acceptable; pressure test records should be prepared according to the specifications.

6. Because the polyurethane direct buried thermal insulation seamless steel pipe is buried in the ground, most of the project is concealed when the project is accepted. If the completion acceptance is not serious, the completion data is not detailed, which will affect the future use.