There are several grades of sliding doors: low-end (ordinary), high-end (conventional) and high-end (pure system doors and windows). There are essential differences among the three grades: research and development, design, technology, materials, production line to specialty stores or retail stores, on-site construction technology and post-service guarantee.
Low-end (common): Basic sliding door sliding window casement window products only have simple basic requirements: they have certain sound insulation performance against wind and rain. Rough technology, corner code technology, simple and unsafe material, hardware service life of 1-5 years, and service may not be guaranteed. The product was quickly eliminated.
High-end (conventional): Basic sliding door casement window products have the basic requirements in doors and windows, such as wind and rain resistance and certain sound insulation performance, but they also need to take into account air tightness (air tightness), water tightness, sound insulation (above 30 dB), heat insulation, wind pressure resistance, safe use and long service life, and can provide five kinds of tests, material tests and patents. Can provide a certain solution, exquisite and standardized technology, using glue injection angle, guaranteed by national material standard, service life 10- 15 years (regular maintenance service life will be longer). It is the mainstream product in the market.
High-end (pure system): the products of sliding door, casement window and casement door are upgraded, which not only meet the basic requirements of wind and rain protection for doors and windows, but also strengthen the air tightness (air tightness), water tightness (), sound insulation (above 40 dB) and heat insulation (k value is1.1.6). The anti-theft, mechanical properties and materials are 1.5 times of those of conventional products, and it can provide five-property testing, material testing, invention patents, system solutions and on-site system construction schemes, involving building mechanics, super-national standards, climate laws and regulations, etc. Exquisite technology, standardization, systematization, die casting, corner injection molding, materials exceeding the national standard reaching the European standard, hardware system imported, can adapt to any bad weather environment. Service life 15-20 years (regular maintenance service life will be longer). Avantgarde high-end luxury goods are out of date, mainstream luxury goods.