What is the application standard of polyurethane insulation pipeline
Polyurethane thermal insulation pipeline must have a solid understanding of the heating pipe. The direct burial laying format can be divided into two formats: compensated direct burial laying and unpaid direct burial laying. We should control the working principle, characteristics and operation of the two formats so that we can choose them fairly in conception and safely, reliably and economically in construction. After entering the field, the manufacturers who have to come to the grinding mill before the construction of the two explosions must stop the investigation. Refuse to do anything about the failed thermostat. Welding of insulating pipes is a closed-end work to supervise the quantity of work, and it is under construction. The construction quantity of various wellbores indirectly affects the engineering quantity and the lifetime of tube island maneuver, and stabilizes the support. If the well chamber is short of waterproofing, the component fruit will be damaged by water immersion. Therefore, the lame construction to ensure the amount of construction. Satisfaction under pressure conditions, we must pay attention to Guandao Mei under pressure. Start and end to check the atmosphere of water injection and drainage, and then do it in two steps: stabilize 10 minutes without leakage. Strength test: after reducing the falling force of Nedi tube to 1.5 times of the working pressure;
One kg hammer is used to check the knock and knock around the weld seam one by one. The tightness test shows that when the dipping force in the pipe is reduced to the working pressure, 30 minutes without leakage and the pressure drop does not exceed 0.2 overnight pressure will pass. Pressure test extruder should be provided according to the scale. Fruit insulation pipe buried in the world, engineering inspection. As far as the overnight department is concerned, it is assumed that there is no lameness in the lowered test branch and no details of the raw materials will affect the subsequent operation. The blasting back excavation should be under pressure test. It is necessary to delimit the thinness of Sammo according to the construction characteristics of polyurethane insulation pipeline, and it is not cut into Jerry work. Adequate attention must be aroused. On-site joint insulation must be checked before passing the test pressure. On-site joint insulation construction. The content of that item is polyurethane thermal insulation pipeline construction of the unique amount of construction noise indirectly affect the operating life. Thermal insulation layer has two formats: on-site foaming construction and thermal insulation tile construction, regardless of which format of back support construction. Satin can conceal annular space, cracking, delamination and other defects. There are many ways to maintain the layer.
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