• 1
PREPAINTED STEEL COIL
Number:
Up time:2022-04-27 10:45
Product description

Color coated steel sheet,also called pre-painted steel sheet or PPGI/PPGL, is based on metal coils (cold-rolled sheet, hot-dip galvanized sheet, aluminized sheet, high aluminum alloy sheet, stainless steel sheet, etc.)

Products made from organic coatings or plastic films. Because it is the coil of the surface coating of the metallurgical plant, the user can directly process it into a product, so it is also called a pre-painted coil.

Color-coated coils are based on hot-dip galvanized sheet, hot-dip galvanized sheet, electro-galvanized sheet, etc. After surface pretreatment (chemical degreasing and chemical conversion treatment), one or several layers of organic coatings are applied on the surface, and then a product that has been cured by baking. Because it is coated with organic coatings of various colors, it is named color steel coil, referred to as color coated coil.


介紹配圖-英文.png

In addition to the protection of the zinc layer, the color-coated steel strip using the hot-dip galvanized steel strip as the base material also plays a covering and protective role in the organic coating on the zinc layer, which can prevent the steel strip from rusting and has a longer service life than the galvanized strip. About 1.5 times longer.

Application:

Color-coated coils are light, beautiful and have good anti-corrosion properties. They can be directly processed. The colors are generally gray, sea blue and brick red. They are mainly used in advertising, construction, home appliances, electrical appliances, furniture and transportation. Factories, gymnasiums, airports/stations, indoor partitions, warehouses, elevators, metal curtain walls, etc.

The paint used in the color-coated coil can choose the corresponding resin according to the use environment, such as polyester silicon modified polyester, polyvinyl chloride plastisol, polyvinylidene chloride, etc. Users can choose according to the application.

Types of Color Coated Coils’ paint:

Polyester (PE) has good adhesion, rich color, wide range in formability and outdoor durability, moderate chemical resistance, and low cost.

Silicon modified polyester (SMP), the coating film has good hardness, abrasion resistance and heat resistance, as well as good external durability, chalk resistance and gloss retention, general flexibility, and medium cost.

High Durability Polyester (HDP), with excellent color retention and UV resistance, excellent outdoor durability and chalk resistance, good film adhesion, rich colors, and excellent cost performance.

Polyvinylidene fluoride (PVDF), has excellent color retention and UV resistance, excellent outdoor durability and chalk resistance, excellent solvent resistance and good moldability, dirt resistance, but limited color, cost high.

Structure:

Top film: Block sunlight and prevent UV damage to the coating; when the topcoat reaches the specified thickness, a dense shielding film can be formed to reduce water permeability and oxygen permeability

Primer: It is beneficial to strengthen the adhesion to the primer, make the paint film not easily desorbed after water penetration, and improve the corrosion resistance, because the primer contains chromate and other corrosion-inhibiting pigments, which can passivate the anode and improve the corrosion resistance.

Coating: Generally, it is galvanized or galvanized, which has a great influence on the service life of the product. The thicker the coating, the better the corrosion resistance.

Base material: generally cold-rolled sheet, different strength determines the mechanical properties of color-coated sheet.

Back film: The function is to prevent the steel plate from corroding from the inside, generally a two-layer structure (2/1M or 2/2, primer+back paint). If the backside requires bonding, a single-layer construction is recommended.

欧美大鸡巴操大骚逼| 国产情侣色综合久久有码| 99热这里只有精品亚洲| 午夜性刺激在线视频免费| 九九在线精品亚洲国产| 骚货 淫水 国产| 最新国产亚洲亚洲精品A| 久久国产老熟女老女人| 欧美国产三级片久久高清| 骚穴 操我 视频| 国产乱子伦视频一区二区三区| a一级毛片免费高清在线| 很黄很爽的免费视频大全| 青娱乐欧美性爱视频| 日本熟人妻中文字幕在线| 国产精品操大屁股老淑女| 在线免费观看一区二区三区| 性一乱一交一免费看视频| 高颜值情侣鸡巴插插淫叫| 中日韩VA无码中文字幕| 9国产亚洲精品国产| 大玩具猛插大bb| 亚洲国产成人手机版| 日本免费精品一区二区三区四区| 欧美日本大白屁股大黑逼操逼视频| 操美女干逼调教捆绑视频| 亚洲综合无码一区二区丶| 欧美日韩久久一区二区三区| 中国三级片在线视频| 大肌巴日小个子女人视频| 中文字幕 av一区二区| 97人人澡人人爽人人揉| 被春药女高潮抽搐喷水视频| 国产 欧美 日韩 黄片| 二次元男生操女生屁眼爽| 插插插插插插插插插插插| 美女骚逼被操出白浆| 插女人下面高潮视频| 亚洲男性天堂一区二区三区| 欧美亚洲干妞内射| 神马我不卡手机在线观看|