久久综合桃花网I中文字幕伦伦I91精品91久久久中77777I在线色avI偷偷操99I美女国产在线观看I免费欧美一区I同性恋一级片I亚洲激情在线观看视频I日系tickle美女全身vkI午夜看毛片I亚洲精品一卡Iav免费看网址I成人自拍avI99999国产精品I少妇特黄一区二区三区I久久综合久久鬼I日韩av在线一区二区I女久久I永久免费无码av网站在线观看I日韩Av无码精品I操人视频在线免费观看I暖暖日本视频I亚洲一区二区三区四区不卡I三级国产在线观看I激情五月婷婷综合

China's production of aluminum profiles products on the level has been quite kind and abroad. Product category can be divided into: colored anodized profiles, electrophoresis coating profiles, Powder coating profiles, PVDF coating profiles, thermal profiles.
Aluminum Profiles products with high strength, light weight, corrosion resistance, decorative, long life, rich colors and so on. Typically, a good product on its surface in 20 years without losing light, not color.

Precautions
Purchase and use of aluminum building profile product should note the following:
1. Check the products factory certification, pay attention to the date of manufacture, specifications, technical conditions, business name and production license number.
2. Carefully inspect the surface condition of the product, the product should be bright colors, gloss, rub the surface can not obvious scratches, bubbles and other defects.
3. Be sure to pay attention to the thickness of products, doors, windows product material thickness should not be less than 1.2mm.
4. Note that the product of the thickness of the surface coating, the film thickness of the anodic oxidation product of not less than 10μm, a thickness of not less than the product electrocoating 17μm, powder spray coating thickness does not exceed the range of 40-120μm, PVDF coating the product should be painted in two or more, not less than 30μm.
5. The best choice for the coastal areas of the user better corrosion resistance of electrophoretic coating profiles, Powder coating profiles or fluorocarbon spraying profile products.
Can not use other hard object such as a brush as a cleaning tool, you should choose a soft cotton and cotton 6. routine maintenance.
7. When cleaning can be water, dish detergent and soap, but not with other organisms.

Inferior characteristics
Extrusion defects. Aluminum extrusion process due to the adequacy of extrusion equipment, extrusion process maturity and whether improper operation, will produce defects such as bubbles, inclusions, layering, color, distortion, etc., affect the quality of aluminum.
Oxide thickness. National standards for architectural aluminum oxide film thickness of not less than 10um (micron). Thick enough, aluminum surface is easy to rust, corrosion. Sample testing of some proletarian name, address, production license, certificate of aluminum, oxide film thickness of only 2 to 4um, some did not even oxide film. According to expert estimates reduced by 1um oxide film thickness, profiles can reduce the power consumption per ton cost more than 150 yuan.
Chemical composition failed. The incorporation of a large number of miscellaneous aluminum, scrap aluminum can greatly reduce costs, but will lead to the chemical composition of aluminum construction failure, seriously jeopardize safety in construction.
Reduce the wall thickness profiles. 90 series of sliding type, according to the national standard which is not less than the minimum wall thickness of aluminum 1.4mm, Guangdong some products are only 0.6 to 0.7mm. 46 series of bomb door type, the minimum national standards for the use of aluminum wall thickness not less than 1.62mm, sampling, Guangdong, some of the products only from 0.97 to 1.18mm.
A significant reduction in low-grade aluminum closure time and reduce the loss of chemical reagents, cost reduction, but the corrosion resistance profiles also greatly reduced.