What you may not know is that most PE pipe manufacturers now require rotational molding process for their products during pipe production.This process not only enhances the toughness and anti-corrosion performance of the pipes,but also saves a lot of operating procedures.Next,let me briefly introduce the importance of the rolling molding process for PE pipes:
The materials for PE pipes processed by rotational molding are generally crushed into powder materials.These grades have good flowability in the first stage of the molding cycle,and can then crosslink to form good resistance to environmental stress cracking and toughness;And it can make the product wear-resistant and weather resistant;Featuring narrow MWD and high-performance rotational molding applications,utilizing its unique properties of chemically crosslinkable grades;However,this is usually not applicable to higher MI grades as they do not possess the expected impact resistance and environmental stress cracking resistance for rotational molded products;This process can crosslink PE pipes suitable for large containers,ranging from 500 gal storage tanks for transporting various chemicals to 20000 gal agricultural storage tanks.

The rotational molding process can make PE pipes have high impact resistance and small warpage, and their melt index range is generally 3-8. It can also make the product melt and flow during thermal cycling; Roll molding uses two types of PE, namely universal and crosslinkable, with MDPE/HDPE typically ranging in density from 0.935 to 0.945g/CC; One advantage of this processing is that the production of bottles automatically removes edges and corners, and generally uses medium to wide MWD grades, so there is no need for post-processing steps like typical blow molding - although some narrow MWD grades are used to improve surface smoothness.
In summary, we can conclude that the rotational molding process of PE pipes can effectively enhance their environmental adaptability, stability, and durability, and also provide great convenience for our use to a certain extent; However, the editor needs to remind everyone here that in order not to affect performance during operation, we must follow the corresponding operating regulations and avoid errors.