Warm Global Customers
With China Plastic Machinery
With China Plastic Machinery
The polyethylene outer casing is made of high-density polyethylene material, which has extremely high mechanical strength and excellent corrosion resistance, and can protect the pipe from damage caused by external factors during transportation, installation and use.
Antioxidants, UV stabilizers and carbon black should be added to the manufacturing of the outer casing.
1. Feeding 2. Extrusion 3. Mold 4. Cooling 5. Traction 6. Inner surface corona treatment 7. Cutting 8. Inspection 9. Finished product
High-density polyethylene outer casing performance index
High-density polyethylene outer casing specification table
A. Polyethylene pipes are prone to aging. If stored in the open air, they should be covered with tarpaulins and other materials. The stacking place should be away from high heat sources and fire sources. After being made into an insulation pipe, it is forbidden to be exposed to the sun or cooled suddenly, otherwise the polyethylene pipe will easily crack, affecting the product performance and service life.
B. Avoid rough loading and unloading during transportation and pipe threading, and avoid hooks that are too thin, too hard, or too much force, otherwise the polyethylene pipe may be easily broken, scratched or torn.
C. The wall thickness of the pipe can be adjusted, and the wall thickness and color can be produced according to user requirements. Due to the different wall thickness of the pipe, the thickness of the insulation layer is an approximate number and should be calculated according to the actual thickness.
D. The brackets, plastic plugs, flanges at both ends, welding rods, welding guns, heat shrink tapes, etc. that are matched with the pipes are complete.
E. The allowable deviation in the table is formulated in accordance with the CJ/114-2000 industry standard.
The calculation formula is: when the outer diameter is ¡Ü400mm, the sum of the upper and lower deviations = 0.1¡Ánominal wall thickness + 0.2
When the outer diameter is ¡Ý400mm, the sum of the upper and lower deviations = 0.15¡Ánominal wall thickness + 0.2
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