Learn more about UPVC windows

UPVC windows are made of plastic-steel profiles. They offer thermal insulation, aislamiento acústico, and strong weather resistance. Whether in the cold winters of northern China or the scorching summers of southern China, UPVC windows significantly improve people’s quality of life, keeping homes warm in winter and cool in summer. Their excellent sound insulation makes them a top choice for buildings such as office buildings, escuelas, and residential communities.

Many people wonder whether UPVC is plastic or metal. Actually, UPVC is neither plastic nor metal; it’s a special material made of polyvinyl chloride (PVC). To make windows and doors, steel lining is added to the profiles.

UPVC windows offer thermal, sound, and thermal insulation properties, along with excellent weather resistance and affordability, making them a popular window type. While metal windows are also popular, they are far inferior to UPVC windows in terms of thermal and sound insulation. Let’s take a look at the main material of UPVC windows—UPVC profiles—and what they are made of.

Composition of UPVC profiles. PVC: The primary component of plastic-steel profiles is PVC, comprising approximately 70% of the material. PVC-based profiles are characterized by high hardness and toughness.

Sin embargo, many companies crush recycled plastic-steel windows and waste plastics to create plastic-steel profiles. While these profiles appear identical to standard plastic-steel profiles, their strength and toughness are lower.

Calcio en polvo: Calcium powder increases the hardness of plastic-steel profiles, requiring a certain percentage. Furthermore, calcium powder is significantly cheaper than PVC.

This has led many companies to reduce PVC usage and add large amounts of calcium powder to save costs. While the wall thickness and hardness of the plastic-steel profiles meet standards, their toughness is reduced, making them as fragile as glass and easily shattered when stepped on.

Otros materiales auxiliares: Other auxiliary materials include UV absorbers, which prevent discoloration after prolonged exposure to sunlight; estabilizadores, which enhance structural stability; lubricants, Agentes antimicrobianos, and titanium dioxide.

Liaocheng Luyang Profile Factory, established in 1999, has nearly 30 years of experience in plastic-steel production. All products meet national standards. The wall thickness of visible surfaces, both inside and outside, is at least 2.5 milímetro, while that of non-visible surfaces is at least 2.0 milímetro.
Our products have a PVC content of over 75% and a calcium powder content of less than 30%, making them low-calcium plastic-steel profiles. They offer excellent welding angles, are lightweight, have high hardness, and are tough, and can withstand 20 years of use without discoloration or deformation. Please leave us a message for inquiries.