PPGL is pre-painted galvanised iron,also known as pre-coated steel, coil coated steel, color coated steel etc, typically with a hot dip zinc coated steel substrate, that is thegalvanized steel is painted before forming, as opposed to post paintingwhich occurs after forming.
( I ) PrepaintedGalvalume Steel Coil Description
PPGL Coil Performance Comparison Table of Different Coatings
There are two most important factors in the choice of primer.
One considers the adhesion of the primer and topcoat and the substrate,
The second is that the primer provides most of the corrosion resistance of the coating.
From this perspective, epoxy is the best choice.
If you consider flexibility and consider UV resistance, you can also choose a polyurethane primer.
For the back coating, the most correct choice is to choose a two-layer structure if the color coated steel sheet is used in a single board.
It is a layer of back primer and a back side finish. The primer is the same as the front, and the topcoat is a polyester with a light color (such as white).
If the color coated steel sheet is used in a composite or sandwich panel, the back surface is coated with an epoxy resin excellent in adhesion and corrosion resistance.
PPGL Coil Coating Gloss Selection
The glossiness of the enamel is not a performance indicator of the coating. Like the color, it is just a characterization. In fact, coatings (coatings) are easier to achieve high gloss.
However, high-gloss surface glare causes high light reflectance during the day, which causes light pollution (many do not use glass curtain walls now because of light pollution).
The high-gloss surface has a small coefficient of friction and is easy to slip. It is easy to bring safety hazards during roof construction. The aging of color-coated steel sheets when used outdoors is firstly indicating that the light is lost. If maintenance is required, the old and new steel sheets are easily distinguishable. Poor appearance;
If the back paint is high-gloss, when there is light in the room, it will easily cause halo and cause visual fatigue. Therefore, under normal circumstances, the color coated steel sheets for construction use low to medium gloss (30-40 degrees).
PPGL Coil Coating Thickness Selection
Microscopically, the coating is a long empty tissue. Water in the air, corrosive media (chloride ions, etc.) will invade through the weak part of the coating, causing corrosion under the film, and the coating will foam and flake off.
In addition, even with the same coating thickness, the secondary coating is denser than the primary coating. According to foreign reports and related corrosion test results, the front coating can effectively prevent the intrusion of corrosive media by more than 20μm.
Due to the different corrosion protection mechanisms of the primer and the topcoat, it is necessary to specify not only the total film thickness but also the thickness of the primer ("5 μm" and the topcoat ("15 μm"). Only in this way can the different parts of the painted steel plate be ensured. Corrosion resistance is balanced.
PVDF products require a thicker coating film. Because of the longer lifespan guarantee. The requirements for the backside coating depend on the application, and the sandwich panel requires only a layer of bondable primer. The formed steel sheet is also required to be coated with two layers due to the indoor corrosive environment. The thickness is at least 10 μm or more.
( II ) Prepainted Galvalume Steel Coil Processing
1.PPGL is pre-painted galvanised iron,also known as pre-coated steel, coil coated steel, color coated steel etc, typically with a hot dip zinc coated steel substrate, that is thegalvanized steel is painted before forming, as opposed to post paintingwhich occurs after forming.
2.Entry end-twin decolier-cleaning-entrylooper-pretreatment-pretreatment oven-prime coater-prime oven-quenchunit-finish coater-finish oven-embosse-quench unit-quench unit-exitlooper-shear-coiler-exit end.
( III ) Prepainted GalvalumeSteel Coil coating structure
1. Coating systems or configurationscan be ustomized as client's requirements.
2. Top coat can be 3-coat system (primer + base coat + finishing coat).
3. Backing can be single service coat or primer + backer coat +finishing coat.
4. Both sides can also be color coated Color matching services provided forfree.
( IV ) Prepainted Galvalume Steel Coil Application
(1) Mainly for automotive industry, householdappliances, furniture, containers, cooking utensils, ship interiors, and modernarchitecture in the filed of garden design, large industrial plants,majoriports, major sports venues, pre-heat sandwich panel.
(2) Contrustion of the outdoor roof, foof, structure, terrace, panels.
(3) Doors, screens, ceilings, bathrooms, interior elevator lobby, stairsventiilation chanel, communication channels.
( V ) Prepainted Galvalume Steel Coil Quality Control
We can provide various tests for PPGI/PPGL, such as coating flexibility test, bending test.
We also can provide SGS detection for PPGI/PPGL.
( VI ) Our Fac tory
Li Cheung STEEL GROUP is China’s leading supplier dedicated to providing its customers with the quickest quotes, best quality products, most competitive prices and fastest possible deliveries of PPGI coils, GI coil, metal roofing tiles, building and decoration material ect.
The company has several subsidiary companies. Scope of the company has been extended to cover raw material supplies, productions, steel structure production, technical and application researches. The products have passed through the ISO 9001:2008 quality assurance systems. Our company has been highly recognized as a contract-held, high creditability (AAA), and outstanding exportation company.
Founded in 2003, it develops closer customer relationships and taking on a larger role in the total supply and manufacturing chain. With over 10 years of expertise in steel industry, the company is committed to providing a range of high quality, innovative, cost-effective steel products which are used in a wide variety of industries . The company’s corporate headquarters is currently located in the Zhengzhou Economic and Technological Development Zone.
( VII ) Packing & Delivery
According to Seaworthy Standards Packing
(1) Each bare coil to be securely tied with two bands through the eye of coil (or not) and one circumferential.
(2) the contact points of these bands on the coil edge to be protect with edge protectors.
(3) Coil then to be properly wrapped with water proof /resistant paper, it then to be properly and completely metal wrapped.
(4) Wooden and iron pallet can be used or as your requirements.
And each packed coil to be properly wrapped with band, three-six such band through the eye of coil at about equal distance.
( VIII) Our More Products
FAQ
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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Wendy
Sales Manager
HENAN Li Cheung STEEL CO., LTD
Address: DEVELOPMENT ZONE HUIGUO TOWN, ZHENGZHOU CHINA
Tel:+86 371 89812229 Fax:+86 371 89812228
MP: +86 18137379019 Wechat/Whatsapp: + 86 18137379019
E-mail: sales@licheungsteel.com
Website: www.jianhuissteel.com
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