Welcome to the official website of Chengdu 66 Plastic Machinery Technology Co., Ltd.! ~
The 38th China International Plastics and Rubber Industry Exhibition (Shanghai), April 21–24, 2026
Chengdu 66 Plastic Machinery Technology Co., Ltd. has been invited to attend Chinaplas 2026, the International Plastics and Rubber Exhibition, which will be held from April 21 to 24, 2026, at the Shanghai National Exhibition and Convention Center. The company’s booth number is 2.2C40.
Mar 28,2026
How can stretching deformation and brittle fracture be prevented during pipe manufacturing?
Stretching deformation: occurs when the traction speed exceeds the extrusion speed and the pipe is pulled out before it has cooled sufficiently. Solution: reduce the traction speed to ensure adequate cooling of the pipe in the cooling tank (surface temperature ≤ 40°C), and adjust the synchronization between traction and extrusion.
Mar 17,2026
There is no need to replace the extrusion main unit; simply swap out the die of the corresponding diameter (die + sizing sleeve) and adjust process parameters such as haul-off speed, vacuum level, and cooling temperature. If the diameter range is too wide—for example, switching from φ63 mm to φ315 mm—then the corresponding haul-off machine fixture or conveyor belt must also be replaced.
Mar 17,2026
What are the key points for daily and periodic maintenance of a plastic pipe production line?
Categorize core maintenance items by frequency to prevent improper maintenance from compromising equipment lifespan and pipe quality.
Mar 17,2026
What are the core components of a PVC sheet production line?
The core equipment comprises an extrusion unit (single- or twin-screw), a die (specifically designed for sheet production), a three-roll calender, a haul-off unit, a cutting machine, and a stacker; it is also equipped with a cooling system, a temperature-control system, a feeding system, and a dust-collection system. High-end production lines further include auxiliary machines such as in-line thickness gauging, laminating, and polishing units.
Mar 17,2026
What are the solutions for uneven foaming and internal voids in rigid PVC sheets?
Uneven foaming: Adjust the dosage and dispersion of the blowing agent, optimize the temperature-control profile (to prevent localized overheating or underheating), and ensure uniform plasticization by the screw.
Mar 17,2026
① Select qualified heat stabilizers and add them precisely according to the formula to avoid insufficient stabilizers; ② Strictly control the temperatures at each stage to prevent local overheating (the decomposition temperature of PVC is approximately 180℃); ③ Ensure that the gap between the screw and the barrel is reasonable to avoid material stagnation; ④ Dry the raw materials in advance to remove moisture and prevent hydrolysis and decomposition; ⑤ Regularly clean the molds and screws to avoid carbonization of accumulated materials.
Mar 17,2026
Common Quality Issues and Solutions
Rough outer surface of the pipe Causes: improper temperature, insufficient cooling, material buildup in the die Remedies: reduce die head temperature, set cooling water temperature to 20–25°C, and clean the die
Mar 17,2026
What is the applicable pipe diameter range for the production line?
Small diameter: 16–63 mm (single mold, dual outlet) Standard: 20–630 mm (water supply / gas) Large-diameter corrugated pipe: 200–600 mm Spiral-wound pipe: 300–1200 mm+
Mar 17,2026
What types of pipe production lines can be manufactured?
We primarily offer extrusion production lines for PE/PPR/PP water supply pipes, PVC drainage and conduit pipes, HDPE double-wall corrugated pipes, and hollow-wall spiral-wound pipes.
Mar 17,2026
Contact Us
Email:18200492997@163.com
yyc13980721280@qq.com
Phone:028-68932896
TEL/WhatsApp: +86-13980721280
Address: No. 1159, Junyue Road, East Zone, Xindu Industrial Park, Chengdu
Website:300.cn
Customer Service Hotline：028-68932896
QQ Customer Service：18200492997
Corporate email：18200492997@163.com
WhatsAPP：8618200492997
