In the production of PE gas pipes, we employ certain technologies to enhance their quality, thereby enabling broader applications across various industries. The rotational molding technique is particularly crucial for this type of piping material. What specific knowledge do we possess about this technology?
1. Application
PE pipes made from materials processed by rotational molding typically are crushed into powdered form. These grades have good fluidity during the molding cycle and are cross-linked to achieve their excellent resistance to environmental stress cracking, toughness, wear resistance, and weather resistance. Higher grades are usually not suitable because they do not possess the desired impact strength and resistance to environmental stress cracking for rotational molding products. To impart high impact and warp resistance, the melt index range is generally 3-8, allowing the material to melt and flow during thermal cycles.
Our rotational molding process utilizes two types of PE materials, namely general-purpose and cross-linkable, with a typical density range of 0.935 to 0.945 g/cc. One advantage of this process is that bottles are automatically de-burred, typically using grades from medium to wide, eliminating the need for post-processing trimming steps as seen in conventional blow molding.
2. Significance
The rotational molding technology for PE gas pipes effectively enhances their environmental adaptability, stability, and durability, also providing significant convenience for our usage to some extent.
3. Cautionary Notes
To maintain operational performance, we must adhere to the corresponding procedures to prevent errors. During the operation, ensure that the tubes are heated evenly to prevent twisting of the heated sections; at the vertical curve points of the route, ensure there are drainage pipes to prevent water accumulation on the road surface; in the embankment section, to ensure the thickness of the soil covering the pipe, prevent damage to the pipe material, lower the trench bottom by 20 centimeters.
The rotational molding technology for PE gas pipes can effectively enhance the quality of the pipes, reducing many troubles during the construction process. It is a necessary technology for pipe materials, and as people' requirements for it increase in the future, the technical requirements will also be higher.
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