Hebei First Plastic Industry Co., Ltd.

The pipe materials must be inspected on site. The stacking and transportation materials must have the production certificate or material certificate of the supplier. The person in charge of the supplier, the supervision unit, the construction unit, and the technical supervisor of the construction unit shall be on site for acceptance. After the acceptance is completed, corresponding records shall be made. or acceptance procedures. The wall thickness, pipe diameter, pressure resistance and corrosion resistance strength of pipe materials must meet the design requirements. 3. Good appearance, no obvious scratches from sharp objects, no bends, no melting points, no melting holes, and no cracks. There are no scratches on the flange root sealing surface, the sealing grooves are clear and horizontal, and there are no cracks between the sealing surface and the short pipe. The inner diameter of the metal flange is larger than the outer diameter of the pipe, which facilitates loose-set installation. After entering the site, the materials can be placed along the construction site on the ground that is convenient for pipeline welding and does not affect traffic and other construction surfaces. The ground must be flat and free of stones and sharp objects that may easily cause pipeline damage. When stacking pipes with different diameters, large and heavy ones should be placed underneath. Measures should be taken to prevent the pipes from rolling and sliding due to stacking, so as to avoid damage to the pipes and safety accidents. For example, use wooden wedges or wooden boards to block both sides of the pipes. . When stacking, pay attention to the load-bearing capacity of the underlying pipes, and the deformation shall not be greater than that. The operating temperature of large-diameter pipes should be within ℃. During the high temperature season in summer, sunlight exposure should be avoided and air circulation between pipes should be maintained to prevent temperature rise and pipe deformation. During the storage of pipelines, waterproof and fireproof measures must be taken to prevent pipelines from floating, collapsing and catching fire. When carrying it over short distances, it should not be rolled on hard uneven ground or gravel ground to prevent damage to the pipeline. When the diameter is larger than one meter, it is not suitable to stack and transport. If small diameter pipelines are stacked and transported, the pipelines should be kept stable and there should be no flow gaps between the pipes to prevent the pipelines from sliding. Stacked on top of each other for transportation, their height should not exceed two meters, and they should be tied to the transportation vehicle with flexible straps or hemp ropes to prevent rolling and collision.